bddnf=# show all;
              name               |                           setting                            |                                         description

---------------------------------+--------------------------------------------------------------+-----------------------------------------------------------------------------------------
-----
 add_missing_from                | off                                                          | Automatically adds missing table references to FROM clauses.
 archive_command                 | unset                                                        | WAL archiving command.
 australian_timezones            | off                                                          | Interprets ACST, CST, EST, and SAT as Australian time zones.
 authentication_timeout          | 60                                                           | Sets the maximum time in seconds to complete client authentication.
 autovacuum                      | off                                                          | Starts the autovacuum subprocess.
 autovacuum_analyze_scale_factor | 0.2                                                          | Number of tuple inserts, updates or deletes prior to analyze as a fraction of reltuples.
 autovacuum_analyze_threshold    | 500                                                          | Minimum number of tuple inserts, updates or deletes prior to analyze.
 autovacuum_naptime              | 60                                                           | Time to sleep between autovacuum runs, in seconds.
 autovacuum_vacuum_cost_delay    | -1                                                           | Vacuum cost delay in milliseconds, for autovacuum.
 autovacuum_vacuum_cost_limit    | -1                                                           | Vacuum cost amount available before napping, for autovacuum.
 autovacuum_vacuum_scale_factor  | 0.4                                                          | Number of tuple updates or deletes prior to vacuum as a fraction of reltuples.
 autovacuum_vacuum_threshold     | 1000                                                         | Minimum number of tuple updates or deletes prior to vacuum.
 bgwriter_all_maxpages           | 5                                                            | Background writer maximum number of all pages to flush per round
 bgwriter_all_percent            | 0.333                                                        | Background writer percentage of all buffers to flush per round
 bgwriter_delay                  | 2000                                                         | Background writer sleep time between rounds in milliseconds
 bgwriter_lru_maxpages           | 5                                                            | Background writer maximum number of LRU pages to flush per round
 bgwriter_lru_percent            | 1                                                            | Background writer percentage of LRU buffers to flush per round
 block_size                      | 8192                                                         | Shows size of a disk block
 bonjour_name                    | unset                                                        | Sets the Bonjour broadcast service name.
 check_function_bodies           | on                                                           | Check function bodies during CREATE FUNCTION.
 checkpoint_segments             | 8                                                            | Sets the maximum distance in log segments between automatic WAL checkpoints.
 checkpoint_timeout              | 800                                                          | Sets the maximum time in seconds between automatic WAL checkpoints.
 checkpoint_warning              | 30                                                           | Logs if filling of checkpoint segments happens more frequently than this (in seconds).
 client_encoding                 | LATIN1                                                       | Sets the client's character set encoding.
 client_min_messages             | notice                                                       | Sets the message levels that are sent to the client.
 commit_delay                    | 0                                                            | Sets the delay in microseconds between transaction commit and flushing WAL to disk.
 commit_siblings                 | 5                                                            | Sets the minimum concurrent open transactions before performing commit_delay.
 config_file                     | C:/Arquivos de programas/PostgreSQL/8.1/data/postgresql.conf | Sets the server's main configuration file.
 constraint_exclusion            | off                                                          | Enables the planner to use constraints to optimize queries.
 cpu_index_tuple_cost            | 0.001                                                        | Sets the planner's estimate of processing cost for each index tuple (row) during index s
can.
 cpu_operator_cost               | 0.0025                                                       | Sets the planner's estimate of processing cost of each operator in WHERE.
 cpu_tuple_cost                  | 0.01                                                         | Sets the planner's estimate of the cost of processing each tuple (row).
 custom_variable_classes         | unset                                                        | Sets the list of known custom variable classes.
 data_directory                  | C:/Arquivos de programas/PostgreSQL/8.1/data                 | Sets the server's data directory.
 DateStyle                       | ISO, MDY                                                     | Sets the display format for date and time values.
 db_user_namespace               | off                                                          | Enables per-database user names.
 deadlock_timeout                | 1000                                                         | The time in milliseconds to wait on lock before checking for deadlock.
 debug_pretty_print              | off                                                          | Indents parse and plan tree displays.
 debug_print_parse               | off                                                          | Prints the parse tree to the server log.
 debug_print_plan                | off                                                          | Prints the execution plan to server log.
 debug_print_rewritten           | off                                                          | Prints the parse tree after rewriting to server log.
 default_statistics_target       | 10                                                           | Sets the default statistics target.
 default_tablespace              | unset                                                        | Sets the default tablespace to create tables and indexes in.
 default_transaction_isolation   | read committed                                               | Sets the transaction isolation level of each new transaction.
 default_transaction_read_only   | off                                                          | Sets the default read-only status of new transactions.
 default_with_oids               | off                                                          | Create new tables with OIDs by default.
 dynamic_library_path            | $libdir                                                      | Sets the path for dynamically loadable modules.
 effective_cache_size            | 100000                                                       | Sets the planner's assumption about size of the disk cache.
 enable_bitmapscan               | on                                                           | Enables the planner's use of bitmap-scan plans.
 enable_hashagg                  | on                                                           | Enables the planner's use of hashed aggregation plans.
 enable_hashjoin                 | on                                                           | Enables the planner's use of hash join plans.
 enable_indexscan                | on                                                           | Enables the planner's use of index-scan plans.
 enable_mergejoin                | on                                                           | Enables the planner's use of merge join plans.
 enable_nestloop                 | on                                                           | Enables the planner's use of nested-loop join plans.
 enable_seqscan                  | on                                                           | Enables the planner's use of sequential-scan plans.
 enable_sort                     | on                                                           | Enables the planner's use of explicit sort steps.
 enable_tidscan                  | on                                                           | Enables the planner's use of TID scan plans.
 escape_string_warning           | off                                                          | Warn about backslash escapes in ordinary string literals.
 explain_pretty_print            | on                                                           | Uses the indented output format for EXPLAIN VERBOSE.
 external_pid_file               | unset                                                        | Writes the postmaster PID to the specified file.
 extra_float_digits              | 0                                                            | Sets the number of digits displayed for floating-point values.
 from_collapse_limit             | 8                                                            | Sets the FROM-list size beyond which subqueries are not collapsed.
 fsync                           | on                                                           | Forces synchronization of updates to disk.
 full_page_writes                | on                                                           | Writes full pages to WAL when first modified after a checkpoint.
 geqo                            | on                                                           | Enables genetic query optimization.
 geqo_effort                     | 5                                                            | GEQO: effort is used to set the default for other GEQO parameters.
 geqo_generations                | 0                                                            | GEQO: number of iterations of the algorithm.
 geqo_pool_size                  | 0                                                            | GEQO: number of individuals in the population.
 geqo_selection_bias             | 2                                                            | GEQO: selective pressure within the population.
 geqo_threshold                  | 2                                                            | Sets the threshold of FROM items beyond which GEQO is used.
 hba_file                        | C:/Arquivos de programas/PostgreSQL/8.1/data/pg_hba.conf     | Sets the server's "hba" configuration file
 ident_file                      | C:/Arquivos de programas/PostgreSQL/8.1/data/pg_ident.conf   | Sets the server's "ident" configuration file
 integer_datetimes               | off                                                          | Datetimes are integer based.
 join_collapse_limit             | 8                                                            | Sets the FROM-list size beyond which JOIN constructs are not flattened.
 krb_caseins_users               | off                                                          | Sets whether Kerberos user names should be treated as case-insensitive.
 krb_server_hostname             | unset                                                        | Sets the hostname of the Kerberos server.
 krb_server_keyfile              | FILE:/usr/local/pgsql/etc/krb5.keytab                        | Sets the location of the Kerberos server key file.
 krb_srvname                     | postgres                                                     | Sets the name of the Kerberos service.
 lc_collate                      | C                                                            | Shows the collation order locale.
 lc_ctype                        | C                                                            | Shows the character classification and case conversion locale.
 lc_messages                     | C                                                            | Sets the language in which messages are displayed.
 lc_monetary                     | C                                                            | Sets the locale for formatting monetary amounts.
 lc_numeric                      | C                                                            | Sets the locale for formatting numbers.
 lc_time                         | C                                                            | Sets the locale for formatting date and time values.
 listen_addresses                | *                                                            | Sets the host name or IP address(es) to listen to.
 log_connections                 | off                                                          | Logs each successful connection.
 log_destination                 | stderr                                                       | Sets the destination for server log output.
 log_directory                   | pg_log                                                       | Sets the destination directory for log files.
 log_disconnections              | off                                                          | Logs end of a session, including duration.
 log_duration                    | off                                                          | Logs the duration of each completed SQL statement.
 log_error_verbosity             | default                                                      | Sets the verbosity of logged messages.
 log_executor_stats              | off                                                          | Writes executor performance statistics to the server log.
 log_filename                    | postgresql-%Y-%m-%d_%H%M%S.log                               | Sets the file name pattern for log files.
 log_hostname                    | off                                                          | Logs the host name in the connection logs.
 log_line_prefix                 | %t                                                           | Controls information prefixed to each log line
 log_min_duration_statement      | -1                                                           | Sets the minimum execution time in milliseconds above which statements will be logged.
 log_min_error_statement         | panic                                                        | Causes all statements generating error at or above this level to be logged.
 log_min_messages                | notice                                                       | Sets the message levels that are logged.
 log_parser_stats                | off                                                          | Writes parser performance statistics to the server log.
 log_planner_stats               | off                                                          | Writes planner performance statistics to the server log.
 log_rotation_age                | 1440                                                         | Automatic log file rotation will occur after N minutes
 log_rotation_size               | 10240                                                        | Automatic log file rotation will occur after N kilobytes
 log_statement                   | none                                                         | Sets the type of statements logged.
 log_statement_stats             | off                                                          | Writes cumulative performance statistics to the server log.
 log_truncate_on_rotation        | off                                                          | Truncate existing log files of same name during log rotation.
 maintenance_work_mem            | 16384                                                        | Sets the maximum memory to be used for maintenance operations.
 max_connections                 | 10                                                           | Sets the maximum number of concurrent connections.
 max_files_per_process           | 1000                                                         | Sets the maximum number of simultaneously open files for each server process.
 max_fsm_pages                   | 60000                                                        | Sets the maximum number of disk pages for which free space is tracked.
 max_fsm_relations               | 1500                                                         | Sets the maximum number of tables and indexes for which free space is tracked.
 max_function_args               | 100                                                          | Shows the maximum number of function arguments.
 max_identifier_length           | 63                                                           | Shows the maximum identifier length
 max_index_keys                  | 32                                                           | Shows the maximum number of index keys.
 max_locks_per_transaction       | 64                                                           | Sets the maximum number of locks per transaction.
 max_prepared_transactions       | 20                                                           | Sets the maximum number of simultaneously prepared transactions.
 max_stack_depth                 | 16380                                                        | Sets the maximum stack depth, in kilobytes.
 password_encryption             | on                                                           | Encrypt passwords.
 port                            | 5432                                                         | Sets the TCP port the server listens on.
 pre_auth_delay                  | 0                                                            | no description available
 preload_libraries               | unset                                                        | Lists shared libraries to preload into server.
 random_page_cost                | 3                                                            | Sets the planner's estimate of the cost of a nonsequentially fetched disk page.
 redirect_stderr                 | on                                                           | Start a subprocess to capture stderr output into log files.
 regex_flavor                    | advanced                                                     | Sets the regular expression "flavor".
 search_path                     | $user,public                                                 | Sets the schema search order for names that are not schema-qualified.
 server_encoding                 | LATIN1                                                       | Sets the server (database) character set encoding.
 server_version                  | 8.1.2                                                        | Shows the server version.
 shared_buffers                  | 32768                                                        | Sets the number of shared memory buffers used by the server.
 silent_mode                     | off                                                          | Runs the server silently.
 sql_inheritance                 | on                                                           | Causes subtables to be included by default in various commands.
 ssl                             | off                                                          | Enables SSL connections.
 standard_conforming_strings     | off                                                          | '...' strings treat backslashes literally.
 statement_timeout               | 0                                                            | Sets the maximum allowed duration (in milliseconds) of any statement.
 stats_block_level               | off                                                          | Collects block-level statistics on database activity.
 stats_command_string            | off                                                          | Collects statistics about executing commands.
 stats_reset_on_server_start     | off                                                          | Zeroes collected statistics on server restart.
 stats_row_level                 | off                                                          | Collects row-level statistics on database activity.
 stats_start_collector           | on                                                           | Starts the server statistics-collection subprocess.
 superuser_reserved_connections  | 2                                                            | Sets the number of connection slots reserved for superusers.
 tcp_keepalives_count            | 0                                                            | Maximum number of TCP keepalive retransmits.
 tcp_keepalives_idle             | 0                                                            | Seconds between issuing TCP keepalives.
 tcp_keepalives_interval         | 0                                                            | Seconds between TCP keepalive retransmits.
 temp_buffers                    | 8000                                                         | Sets the maximum number of temporary buffers used by each session.
 TimeZone                        | GMT3                                                         | Sets the time zone for displaying and interpreting time stamps.
 trace_notify                    | off                                                          | Generates debugging output for LISTEN and NOTIFY.
 trace_sort                      | off                                                          | Emit information about resource usage in sorting.
 transaction_isolation           | read committed                                               | Sets the current transaction's isolation level.
 transaction_read_only           | off                                                          | Sets the current transaction's read-only status.
 transform_null_equals           | off                                                          | Treats "expr=NULL" as "expr IS NULL".
 unix_socket_directory           | unset                                                        | Sets the directory where the Unix-domain socket will be created.
 unix_socket_group               | unset                                                        | Sets the owning group of the Unix-domain socket.
 unix_socket_permissions         | 511                                                          | Sets the access permissions of the Unix-domain socket.
 vacuum_cost_delay               | 0                                                            | Vacuum cost delay in milliseconds.
 vacuum_cost_limit               | 200                                                          | Vacuum cost amount available before napping.
 vacuum_cost_page_dirty          | 20                                                           | Vacuum cost for a page dirtied by vacuum.
 vacuum_cost_page_hit            | 1                                                            | Vacuum cost for a page found in the buffer cache.
 vacuum_cost_page_miss           | 10                                                           | Vacuum cost for a page not found in the buffer cache.
 wal_buffers                     | 1000                                                         | Sets the number of disk-page buffers in shared memory for WAL.
 wal_sync_method                 | open_datasync                                                | Selects the method used for forcing WAL updates out to disk.
 work_mem                        | 196000                                                       | Sets the maximum memory to be used for query workspaces.
 zero_damaged_pages              | off                                                          | Continues processing past damaged page headers.
(160 registros)

bddnf=#



select count(distinct NF.ID_NF) as contagem,
  DE.AM_REFERENCIA as campo
    from DECLARACAO DE, CADASTRO CAD, NOTA_FISCAL NF, EMPRESA EMP,
       ARQUIVO_PROCESSADO ARQ
    where CAD.ID_DECLARACAO=DE.ID_DECLARACAO and
          NF.ID_CADASTRO=CAD.ID_CADASTRO and
          EMP.ID_EMPRESA=DE.ID_EMPRESA and
          ARQ.ID_ARQUIVO=DE.ID_ARQUIVO
    group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;


bddnf=# explain analyze select count(distinct NF.ID_NF) as contagem,
bddnf-#   DE.AM_REFERENCIA as campo
bddnf-#     from DECLARACAO DE, CADASTRO CAD, NOTA_FISCAL NF, EMPRESA EMP,
bddnf-#        ARQUIVO_PROCESSADO ARQ
bddnf-#     where CAD.ID_DECLARACAO=DE.ID_DECLARACAO and
bddnf-#           NF.ID_CADASTRO=CAD.ID_CADASTRO and
bddnf-#           EMP.ID_EMPRESA=DE.ID_EMPRESA and
bddnf-#           ARQ.ID_ARQUIVO=DE.ID_ARQUIVO
bddnf-#     group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;

**********
manually aborted.
**********


bddnf=# analyze;

bddnf=# explain select count(distinct NF.ID_NF) as contagem, DE.AM_REFERENCIA as campo from DECLARACAO DE  inner join CADASTRO CAD on (CAD.ID_DECLARACAO=DE.ID_DECLARACAO) inner join NOTA_FISCAL NF on (NF.ID_CADASTRO=CAD.ID_CADASTRO) inner join EMPRESA EMP on (EMP.ID_EMPRESA=DE.ID_EMPRESA) inner join ARQUIVO_PROCESSADO ARQ on (ARQ.ID_ARQUIVO=DE.ID_ARQUIVO) group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;
                                                         QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=241641.38..252738.52 rows=17 width=8)
   ->  Sort  (cost=241641.38..245340.35 rows=1479591 width=8)
         Sort Key: de.am_referencia
         ->  Hash Join  (cost=2093.60..90007.22 rows=1479591 width=8)
               Hash Cond: ("outer".id_cadastro = "inner".id_cadastro)
               ->  Seq Scan on nota_fiscal nf  (cost=0.00..39826.91 rows=1479591 width=8)
               ->  Hash  (cost=2054.91..2054.91 rows=15475 width=8)
                     ->  Hash Join  (cost=782.54..2054.91 rows=15475 width=8)
                           Hash Cond: ("outer".id_declaracao = "inner".id_declaracao)
                           ->  Seq Scan on cadastro cad  (cost=0.00..730.75 rows=15475 width=8)
                           ->  Hash  (cost=758.12..758.12 rows=9768 width=8)
                                 ->  Hash Join  (cost=95.14..758.12 rows=9768 width=8)
                                       Hash Cond: ("outer".id_empresa = "inner".id_empresa)
                                       ->  Hash Join  (cost=1.13..444.33 rows=9768 width=12)
                                             Hash Cond: ("outer".id_arquivo = "inner".id_arquivo)
                                             ->  Seq Scan on declaracao de  (cost=0.00..296.68 rows=9768 width=16)
                                             ->  Hash  (cost=1.10..1.10 rows=10 width=4)
                                                   ->  Seq Scan on arquivo_processado arq  (cost=0.00..1.10 rows=10 width=4)
                                       ->  Hash  (cost=84.61..84.61 rows=3761 width=4)
                                             ->  Seq Scan on empresa emp  (cost=0.00..84.61 rows=3761 width=4)
(20 registros)

bddnf=#


bddnf=# explain select count(distinct NF.ID_NF) as contagem,
bddnf-#   DE.AM_REFERENCIA as campo
bddnf-#     from DECLARACAO DE, CADASTRO CAD, NOTA_FISCAL NF, EMPRESA EMP,
bddnf-#        ARQUIVO_PROCESSADO ARQ
bddnf-#     where CAD.ID_DECLARACAO=DE.ID_DECLARACAO and
bddnf-#           NF.ID_CADASTRO=CAD.ID_CADASTRO and
bddnf-#           EMP.ID_EMPRESA=DE.ID_EMPRESA and
bddnf-#           ARQ.ID_ARQUIVO=DE.ID_ARQUIVO
bddnf-#     group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;
                                                      QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=241641.38..252738.52 rows=17 width=8)
   ->  Sort  (cost=241641.38..245340.35 rows=1479591 width=8)
         Sort Key: de.am_referencia
         ->  Hash Join  (cost=2093.60..90007.22 rows=1479591 width=8)
               Hash Cond: ("outer".id_cadastro = "inner".id_cadastro)
               ->  Seq Scan on nota_fiscal nf  (cost=0.00..39826.91 rows=1479591 width=8)
               ->  Hash  (cost=2054.91..2054.91 rows=15475 width=8)
                     ->  Hash Join  (cost=782.54..2054.91 rows=15475 width=8)
                           Hash Cond: ("outer".id_declaracao = "inner".id_declaracao)
                           ->  Seq Scan on cadastro cad  (cost=0.00..730.75 rows=15475 width=8)
                           ->  Hash  (cost=758.12..758.12 rows=9768 width=8)
                                 ->  Hash Join  (cost=95.14..758.12 rows=9768 width=8)
                                       Hash Cond: ("outer".id_arquivo = "inner".id_arquivo)
                                       ->  Hash Join  (cost=94.01..610.47 rows=9768 width=12)
                                             Hash Cond: ("outer".id_empresa = "inner".id_empresa)
                                             ->  Seq Scan on declaracao de  (cost=0.00..296.68 rows=9768 width=16)
                                             ->  Hash  (cost=84.61..84.61 rows=3761 width=4)
                                                   ->  Seq Scan on empresa emp  (cost=0.00..84.61 rows=3761 width=4)
                                       ->  Hash  (cost=1.10..1.10 rows=10 width=4)
                                             ->  Seq Scan on arquivo_processado arq  (cost=0.00..1.10 rows=10 width=4)
(20 registros)

bddnf=#



bddnf=# explain update NOTA_FISCAL set VA_TOTAL_ITENSDNF = (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF) where NOTA_FISCAL.ID_CADASTRO  in (select CAD.ID_CADASTRO from DECLARACAO DE  inner join CADASTRO CAD on (CAD.ID_DECLARACAO=DE.ID_DECLARACAO)      where DE.ID_ARQUIVO in (10)  )  and (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA   where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF) < 999999999999;
                                                       QUERY PLAN
------------------------------------------------------------------------------------------------------------------------
 Nested Loop  (cost=206.80..2624175.59 rows=797 width=200)
   ->  HashAggregate  (cost=206.80..207.05 rows=25 width=4)
         ->  Nested Loop  (cost=2.01..206.73 rows=25 width=4)
               ->  Index Scan using fki_declaracao_id_arquivo_fkey on declaracao de  (cost=0.00..36.77 rows=16 width=4)
                     Index Cond: (id_arquivo = 10)
               ->  Bitmap Heap Scan on cadastro cad  (cost=2.01..10.59 rows=3 width=8)
                     Recheck Cond: (cad.id_declaracao = "outer".id_declaracao)
                     ->  Bitmap Index Scan on fki_cadastro_id_declaracao_fkey  (cost=0.00..2.01 rows=3 width=0)
                           Index Cond: (cad.id_declaracao = "outer".id_declaracao)
   ->  Index Scan using fki_nota_fiscal_id_cadastro_fkey on nota_fiscal  (cost=0.00..101004.85 rows=270 width=200)
         Index Cond: (nota_fiscal.id_cadastro = "outer".id_cadastro)
         Filter: ((subplan) < 999999999999::numeric)
         SubPlan
           ->  Aggregate  (cost=123.91..123.92 rows=1 width=12)
                 ->  Bitmap Heap Scan on item_nota  (cost=2.14..123.80 rows=41 width=12)
                       Recheck Cond: (id_nf = $0)
                       ->  Bitmap Index Scan on fki_item_nota_id_nf_fkey  (cost=0.00..2.14 rows=41 width=0)
                             Index Cond: (id_nf = $0)
   SubPlan
     ->  Aggregate  (cost=123.91..123.92 rows=1 width=12)
           ->  Bitmap Heap Scan on item_nota  (cost=2.14..123.80 rows=41 width=12)
                 Recheck Cond: (id_nf = $0)
                 ->  Bitmap Index Scan on fki_item_nota_id_nf_fkey  (cost=0.00..2.14 rows=41 width=0)
                       Index Cond: (id_nf = $0)
(24 registros)

bddnf=#


bddnf=# show all;
              name               |                           setting                            |                                         description

---------------------------------+--------------------------------------------------------------+-----------------------------------------------------------------------------------------
-----
 add_missing_from                | off                                                          | Automatically adds missing table references to FROM clauses.
 archive_command                 | unset                                                        | WAL archiving command.
 australian_timezones            | off                                                          | Interprets ACST, CST, EST, and SAT as Australian time zones.
 authentication_timeout          | 60                                                           | Sets the maximum time in seconds to complete client authentication.
 autovacuum                      | off                                                          | Starts the autovacuum subprocess.
 autovacuum_analyze_scale_factor | 0.2                                                          | Number of tuple inserts, updates or deletes prior to analyze as a fraction of reltuples.
 autovacuum_analyze_threshold    | 500                                                          | Minimum number of tuple inserts, updates or deletes prior to analyze.
 autovacuum_naptime              | 60                                                           | Time to sleep between autovacuum runs, in seconds.
 autovacuum_vacuum_cost_delay    | -1                                                           | Vacuum cost delay in milliseconds, for autovacuum.
 autovacuum_vacuum_cost_limit    | -1                                                           | Vacuum cost amount available before napping, for autovacuum.
 autovacuum_vacuum_scale_factor  | 0.4                                                          | Number of tuple updates or deletes prior to vacuum as a fraction of reltuples.
 autovacuum_vacuum_threshold     | 1000                                                         | Minimum number of tuple updates or deletes prior to vacuum.
 bgwriter_all_maxpages           | 5                                                            | Background writer maximum number of all pages to flush per round
 bgwriter_all_percent            | 0.333                                                        | Background writer percentage of all buffers to flush per round
 bgwriter_delay                  | 2000                                                         | Background writer sleep time between rounds in milliseconds
 bgwriter_lru_maxpages           | 5                                                            | Background writer maximum number of LRU pages to flush per round
 bgwriter_lru_percent            | 1                                                            | Background writer percentage of LRU buffers to flush per round
 block_size                      | 8192                                                         | Shows size of a disk block
 bonjour_name                    | unset                                                        | Sets the Bonjour broadcast service name.
 check_function_bodies           | on                                                           | Check function bodies during CREATE FUNCTION.
 checkpoint_segments             | 8                                                            | Sets the maximum distance in log segments between automatic WAL checkpoints.
 checkpoint_timeout              | 800                                                          | Sets the maximum time in seconds between automatic WAL checkpoints.
 checkpoint_warning              | 30                                                           | Logs if filling of checkpoint segments happens more frequently than this (in seconds).
 client_encoding                 | LATIN1                                                       | Sets the client's character set encoding.
 client_min_messages             | notice                                                       | Sets the message levels that are sent to the client.
 commit_delay                    | 0                                                            | Sets the delay in microseconds between transaction commit and flushing WAL to disk.
 commit_siblings                 | 5                                                            | Sets the minimum concurrent open transactions before performing commit_delay.
 config_file                     | C:/Arquivos de programas/PostgreSQL/8.1/data/postgresql.conf | Sets the server's main configuration file.
 constraint_exclusion            | off                                                          | Enables the planner to use constraints to optimize queries.
 cpu_index_tuple_cost            | 0.001                                                        | Sets the planner's estimate of processing cost for each index tuple (row) during index s
can.
 cpu_operator_cost               | 0.0025                                                       | Sets the planner's estimate of processing cost of each operator in WHERE.
 cpu_tuple_cost                  | 0.01                                                         | Sets the planner's estimate of the cost of processing each tuple (row).
 custom_variable_classes         | unset                                                        | Sets the list of known custom variable classes.
 data_directory                  | C:/Arquivos de programas/PostgreSQL/8.1/data                 | Sets the server's data directory.
 DateStyle                       | ISO, MDY                                                     | Sets the display format for date and time values.
 db_user_namespace               | off                                                          | Enables per-database user names.
 deadlock_timeout                | 1000                                                         | The time in milliseconds to wait on lock before checking for deadlock.
 debug_pretty_print              | off                                                          | Indents parse and plan tree displays.
 debug_print_parse               | off                                                          | Prints the parse tree to the server log.
 debug_print_plan                | off                                                          | Prints the execution plan to server log.
 debug_print_rewritten           | off                                                          | Prints the parse tree after rewriting to server log.
 default_statistics_target       | 10                                                           | Sets the default statistics target.
 default_tablespace              | unset                                                        | Sets the default tablespace to create tables and indexes in.
 default_transaction_isolation   | read committed                                               | Sets the transaction isolation level of each new transaction.
 default_transaction_read_only   | off                                                          | Sets the default read-only status of new transactions.
 default_with_oids               | off                                                          | Create new tables with OIDs by default.
 dynamic_library_path            | $libdir                                                      | Sets the path for dynamically loadable modules.
 effective_cache_size            | 100000                                                       | Sets the planner's assumption about size of the disk cache.
 enable_bitmapscan               | on                                                           | Enables the planner's use of bitmap-scan plans.
 enable_hashagg                  | on                                                           | Enables the planner's use of hashed aggregation plans.
 enable_hashjoin                 | on                                                           | Enables the planner's use of hash join plans.
 enable_indexscan                | on                                                           | Enables the planner's use of index-scan plans.
 enable_mergejoin                | on                                                           | Enables the planner's use of merge join plans.
 enable_nestloop                 | on                                                           | Enables the planner's use of nested-loop join plans.
 enable_seqscan                  | on                                                           | Enables the planner's use of sequential-scan plans.
 enable_sort                     | on                                                           | Enables the planner's use of explicit sort steps.
 enable_tidscan                  | on                                                           | Enables the planner's use of TID scan plans.
 escape_string_warning           | off                                                          | Warn about backslash escapes in ordinary string literals.
 explain_pretty_print            | on                                                           | Uses the indented output format for EXPLAIN VERBOSE.
 external_pid_file               | unset                                                        | Writes the postmaster PID to the specified file.
 extra_float_digits              | 0                                                            | Sets the number of digits displayed for floating-point values.
 from_collapse_limit             | 8                                                            | Sets the FROM-list size beyond which subqueries are not collapsed.
 fsync                           | on                                                           | Forces synchronization of updates to disk.
 full_page_writes                | on                                                           | Writes full pages to WAL when first modified after a checkpoint.
 geqo                            | on                                                           | Enables genetic query optimization.
 geqo_effort                     | 5                                                            | GEQO: effort is used to set the default for other GEQO parameters.
 geqo_generations                | 0                                                            | GEQO: number of iterations of the algorithm.
 geqo_pool_size                  | 0                                                            | GEQO: number of individuals in the population.
 geqo_selection_bias             | 2                                                            | GEQO: selective pressure within the population.
 geqo_threshold                  | 2                                                            | Sets the threshold of FROM items beyond which GEQO is used.
 hba_file                        | C:/Arquivos de programas/PostgreSQL/8.1/data/pg_hba.conf     | Sets the server's "hba" configuration file
 ident_file                      | C:/Arquivos de programas/PostgreSQL/8.1/data/pg_ident.conf   | Sets the server's "ident" configuration file
 integer_datetimes               | off                                                          | Datetimes are integer based.
 join_collapse_limit             | 8                                                            | Sets the FROM-list size beyond which JOIN constructs are not flattened.
 krb_caseins_users               | off                                                          | Sets whether Kerberos user names should be treated as case-insensitive.
 krb_server_hostname             | unset                                                        | Sets the hostname of the Kerberos server.
 krb_server_keyfile              | FILE:/usr/local/pgsql/etc/krb5.keytab                        | Sets the location of the Kerberos server key file.
 krb_srvname                     | postgres                                                     | Sets the name of the Kerberos service.
 lc_collate                      | C                                                            | Shows the collation order locale.
 lc_ctype                        | C                                                            | Shows the character classification and case conversion locale.
 lc_messages                     | C                                                            | Sets the language in which messages are displayed.
 lc_monetary                     | C                                                            | Sets the locale for formatting monetary amounts.
 lc_numeric                      | C                                                            | Sets the locale for formatting numbers.
 lc_time                         | C                                                            | Sets the locale for formatting date and time values.
 listen_addresses                | *                                                            | Sets the host name or IP address(es) to listen to.
 log_connections                 | off                                                          | Logs each successful connection.
 log_destination                 | stderr                                                       | Sets the destination for server log output.
 log_directory                   | pg_log                                                       | Sets the destination directory for log files.
 log_disconnections              | off                                                          | Logs end of a session, including duration.
 log_duration                    | off                                                          | Logs the duration of each completed SQL statement.
 log_error_verbosity             | default                                                      | Sets the verbosity of logged messages.
 log_executor_stats              | off                                                          | Writes executor performance statistics to the server log.
 log_filename                    | postgresql-%Y-%m-%d_%H%M%S.log                               | Sets the file name pattern for log files.
 log_hostname                    | off                                                          | Logs the host name in the connection logs.
 log_line_prefix                 | %t                                                           | Controls information prefixed to each log line
 log_min_duration_statement      | -1                                                           | Sets the minimum execution time in milliseconds above which statements will be logged.
 log_min_error_statement         | panic                                                        | Causes all statements generating error at or above this level to be logged.
 log_min_messages                | notice                                                       | Sets the message levels that are logged.
 log_parser_stats                | off                                                          | Writes parser performance statistics to the server log.
 log_planner_stats               | off                                                          | Writes planner performance statistics to the server log.
 log_rotation_age                | 1440                                                         | Automatic log file rotation will occur after N minutes
 log_rotation_size               | 10240                                                        | Automatic log file rotation will occur after N kilobytes
 log_statement                   | none                                                         | Sets the type of statements logged.
 log_statement_stats             | off                                                          | Writes cumulative performance statistics to the server log.
 log_truncate_on_rotation        | off                                                          | Truncate existing log files of same name during log rotation.
 maintenance_work_mem            | 16384                                                        | Sets the maximum memory to be used for maintenance operations.
 max_connections                 | 10                                                           | Sets the maximum number of concurrent connections.
 max_files_per_process           | 1000                                                         | Sets the maximum number of simultaneously open files for each server process.
 max_fsm_pages                   | 50000                                                        | Sets the maximum number of disk pages for which free space is tracked.
 max_fsm_relations               | 1500                                                         | Sets the maximum number of tables and indexes for which free space is tracked.
 max_function_args               | 100                                                          | Shows the maximum number of function arguments.
 max_identifier_length           | 63                                                           | Shows the maximum identifier length
 max_index_keys                  | 32                                                           | Shows the maximum number of index keys.
 max_locks_per_transaction       | 64                                                           | Sets the maximum number of locks per transaction.
 max_prepared_transactions       | 20                                                           | Sets the maximum number of simultaneously prepared transactions.
 max_stack_depth                 | 16380                                                        | Sets the maximum stack depth, in kilobytes.
 password_encryption             | on                                                           | Encrypt passwords.
 port                            | 5432                                                         | Sets the TCP port the server listens on.
 pre_auth_delay                  | 0                                                            | no description available
 preload_libraries               | unset                                                        | Lists shared libraries to preload into server.
 random_page_cost                | 3                                                            | Sets the planner's estimate of the cost of a nonsequentially fetched disk page.
 redirect_stderr                 | on                                                           | Start a subprocess to capture stderr output into log files.
 regex_flavor                    | advanced                                                     | Sets the regular expression "flavor".
 search_path                     | $user,public                                                 | Sets the schema search order for names that are not schema-qualified.
 server_encoding                 | LATIN1                                                       | Sets the server (database) character set encoding.
 server_version                  | 8.1.2                                                        | Shows the server version.
 shared_buffers                  | 16384                                                        | Sets the number of shared memory buffers used by the server.
 silent_mode                     | off                                                          | Runs the server silently.
 sql_inheritance                 | on                                                           | Causes subtables to be included by default in various commands.
 ssl                             | off                                                          | Enables SSL connections.
 standard_conforming_strings     | off                                                          | '...' strings treat backslashes literally.
 statement_timeout               | 0                                                            | Sets the maximum allowed duration (in milliseconds) of any statement.
 stats_block_level               | off                                                          | Collects block-level statistics on database activity.
 stats_command_string            | off                                                          | Collects statistics about executing commands.
 stats_reset_on_server_start     | off                                                          | Zeroes collected statistics on server restart.
 stats_row_level                 | off                                                          | Collects row-level statistics on database activity.
 stats_start_collector           | on                                                           | Starts the server statistics-collection subprocess.
 superuser_reserved_connections  | 2                                                            | Sets the number of connection slots reserved for superusers.
 tcp_keepalives_count            | 0                                                            | Maximum number of TCP keepalive retransmits.
 tcp_keepalives_idle             | 0                                                            | Seconds between issuing TCP keepalives.
 tcp_keepalives_interval         | 0                                                            | Seconds between TCP keepalive retransmits.
 temp_buffers                    | 8000                                                         | Sets the maximum number of temporary buffers used by each session.
 TimeZone                        | GMT3                                                         | Sets the time zone for displaying and interpreting time stamps.
 trace_notify                    | off                                                          | Generates debugging output for LISTEN and NOTIFY.
 trace_sort                      | off                                                          | Emit information about resource usage in sorting.
 transaction_isolation           | read committed                                               | Sets the current transaction's isolation level.
 transaction_read_only           | off                                                          | Sets the current transaction's read-only status.
 transform_null_equals           | off                                                          | Treats "expr=NULL" as "expr IS NULL".
 unix_socket_directory           | unset                                                        | Sets the directory where the Unix-domain socket will be created.
 unix_socket_group               | unset                                                        | Sets the owning group of the Unix-domain socket.
 unix_socket_permissions         | 511                                                          | Sets the access permissions of the Unix-domain socket.
 vacuum_cost_delay               | 0                                                            | Vacuum cost delay in milliseconds.
 vacuum_cost_limit               | 200                                                          | Vacuum cost amount available before napping.
 vacuum_cost_page_dirty          | 20                                                           | Vacuum cost for a page dirtied by vacuum.
 vacuum_cost_page_hit            | 1                                                            | Vacuum cost for a page found in the buffer cache.
 vacuum_cost_page_miss           | 10                                                           | Vacuum cost for a page not found in the buffer cache.
 wal_buffers                     | 1000                                                         | Sets the number of disk-page buffers in shared memory for WAL.
 wal_sync_method                 | open_datasync                                                | Selects the method used for forcing WAL updates out to disk.
 work_mem                        | 16384                                                        | Sets the maximum memory to be used for query workspaces.
 zero_damaged_pages              | off                                                          | Continues processing past damaged page headers.
(160 registros)

bddnf=#

bddnf=# explain select count(distinct NF.ID_NF) as contagem, DE.AM_REFERENCIA as campo from DECLARACAO DE  inner join CADASTRO CAD on (CAD.ID_DECLARACAO=DE.ID_DECLARACAO) inner join NOTA_FISCAL NF on (NF.ID_CADASTRO=CAD.ID_CADASTRO) inner join EMPRESA EMP on (EMP.ID_EMPRESA=DE.ID_EMPRESA) inner join ARQUIVO_PROCESSADO ARQ on (ARQ.ID_ARQUIVO=DE.ID_ARQUIVO) group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;
                                                         QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=255663.09..266738.67 rows=14 width=8)
   ->  Sort  (cost=255663.09..259354.89 rows=1476721 width=8)
         Sort Key: de.am_referencia
         ->  Hash Join  (cost=2092.60..89884.24 rows=1476721 width=8)
               Hash Cond: ("outer".id_cadastro = "inner".id_cadastro)
               ->  Seq Scan on nota_fiscal nf  (cost=0.00..39798.21 rows=1476721 width=8)
               ->  Hash  (cost=2053.91..2053.91 rows=15475 width=8)
                     ->  Hash Join  (cost=781.54..2053.91 rows=15475 width=8)
                           Hash Cond: ("outer".id_declaracao = "inner".id_declaracao)
                           ->  Seq Scan on cadastro cad  (cost=0.00..730.75 rows=15475 width=8)
                           ->  Hash  (cost=757.12..757.12 rows=9768 width=8)
                                 ->  Hash Join  (cost=94.14..757.12 rows=9768 width=8)
                                       Hash Cond: ("outer".id_empresa = "inner".id_empresa)
                                       ->  Hash Join  (cost=1.13..444.33 rows=9768 width=12)
                                             Hash Cond: ("outer".id_arquivo = "inner".id_arquivo)
                                             ->  Seq Scan on declaracao de  (cost=0.00..296.68 rows=9768 width=16)
                                             ->  Hash  (cost=1.10..1.10 rows=10 width=4)
                                                   ->  Seq Scan on arquivo_processado arq  (cost=0.00..1.10 rows=10 width=4)
                                       ->  Hash  (cost=83.61..83.61 rows=3761 width=4)
                                             ->  Seq Scan on empresa emp  (cost=0.00..83.61 rows=3761 width=4)
(20 registros)

bddnf=#
bddnf=# explain select count(distinct NF.ID_NF) as contagem,
bddnf-#   DE.AM_REFERENCIA as campo
bddnf-#     from DECLARACAO DE, CADASTRO CAD, NOTA_FISCAL NF, EMPRESA EMP,
bddnf-#        ARQUIVO_PROCESSADO ARQ
bddnf-#     where CAD.ID_DECLARACAO=DE.ID_DECLARACAO and
bddnf-#           NF.ID_CADASTRO=CAD.ID_CADASTRO and
bddnf-#           EMP.ID_EMPRESA=DE.ID_EMPRESA and
bddnf-#           ARQ.ID_ARQUIVO=DE.ID_ARQUIVO
bddnf-#     group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;
                                                         QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=255663.09..266738.67 rows=14 width=8)
   ->  Sort  (cost=255663.09..259354.89 rows=1476721 width=8)
         Sort Key: de.am_referencia
         ->  Hash Join  (cost=2092.60..89884.24 rows=1476721 width=8)
               Hash Cond: ("outer".id_cadastro = "inner".id_cadastro)
               ->  Seq Scan on nota_fiscal nf  (cost=0.00..39798.21 rows=1476721 width=8)
               ->  Hash  (cost=2053.91..2053.91 rows=15475 width=8)
                     ->  Hash Join  (cost=781.54..2053.91 rows=15475 width=8)
                           Hash Cond: ("outer".id_declaracao = "inner".id_declaracao)
                           ->  Seq Scan on cadastro cad  (cost=0.00..730.75 rows=15475 width=8)
                           ->  Hash  (cost=757.12..757.12 rows=9768 width=8)
                                 ->  Hash Join  (cost=94.14..757.12 rows=9768 width=8)
                                       Hash Cond: ("outer".id_empresa = "inner".id_empresa)
                                       ->  Hash Join  (cost=1.13..444.33 rows=9768 width=12)
                                             Hash Cond: ("outer".id_arquivo = "inner".id_arquivo)
                                             ->  Seq Scan on declaracao de  (cost=0.00..296.68 rows=9768 width=16)
                                             ->  Hash  (cost=1.10..1.10 rows=10 width=4)
                                                   ->  Seq Scan on arquivo_processado arq  (cost=0.00..1.10 rows=10 width=4)
                                       ->  Hash  (cost=83.61..83.61 rows=3761 width=4)
                                             ->  Seq Scan on empresa emp  (cost=0.00..83.61 rows=3761 width=4)
(20 registros)

bddnf=#


bddnf=#
bddnf=# explain
bddnf-# update NOTA_FISCAL
bddnf-# set VA_TOTAL_ITENSDNF = (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#        where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF)
bddnf-#        where NOTA_FISCAL.ID_CADASTRO
bddnf-#              in (select CAD.ID_CADASTRO from DECLARACAO DE
bddnf(#                 inner join CADASTRO CAD on (CAD.ID_DECLARACAO=DE.ID_DECLARACAO)
bddnf(#                 where DE.ID_ARQUIVO in (10)  )
bddnf-#        and (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#           where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF) < 999999999999;
                                                      QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------
 Nested Loop  (cost=92.06..1590156.63 rows=484 width=199)
   ->  HashAggregate  (cost=92.06..92.17 rows=11 width=4)
         ->  Nested Loop  (cost=2.01..92.03 rows=11 width=4)
               ->  Index Scan using fki_declaracao_id_arquivo_fkey on declaracao de  (cost=0.00..17.67 rows=7 width=4)
                     Index Cond: (id_arquivo = 10)
               ->  Bitmap Heap Scan on cadastro cad  (cost=2.01..10.59 rows=3 width=8)
                     Recheck Cond: (cad.id_declaracao = "outer".id_declaracao)
                     ->  Bitmap Index Scan on fki_cadastro_id_declaracao_fkey  (cost=0.00..2.01 rows=3 width=0)
                           Index Cond: (cad.id_declaracao = "outer".id_declaracao)
   ->  Index Scan using fki_nota_fiscal_id_cadastro_fkey on nota_fiscal  (cost=0.00..139094.28 rows=372 width=199)
         Index Cond: (nota_fiscal.id_cadastro = "outer".id_cadastro)
         Filter: ((subplan) < 999999999999::numeric)
         SubPlan
           ->  Aggregate  (cost=123.91..123.92 rows=1 width=12)
                 ->  Bitmap Heap Scan on item_nota  (cost=2.14..123.80 rows=41 width=12)
                       Recheck Cond: (id_nf = $0)
                       ->  Bitmap Index Scan on fki_item_nota_id_nf_fkey  (cost=0.00..2.14 rows=41 width=0)
                             Index Cond: (id_nf = $0)
   SubPlan
     ->  Aggregate  (cost=123.91..123.92 rows=1 width=12)
           ->  Bitmap Heap Scan on item_nota  (cost=2.14..123.80 rows=41 width=12)
                 Recheck Cond: (id_nf = $0)
                 ->  Bitmap Index Scan on fki_item_nota_id_nf_fkey  (cost=0.00..2.14 rows=41 width=0)
                       Index Cond: (id_nf = $0)
(24 registros)

bddnf=#



bddnf=# explain
bddnf-#  update NOTA_FISCAL
bddnf-#  set VA_TOTAL_ITENSDNF = (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#                           where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF)
bddnf-#  where exists
bddnf-#       (select CAD.ID_CADASTRO
bddnf(#        from DECLARACAO DE, CADASTRO CAD
bddnf(#        where DE.ID_ARQUIVO in (10)
bddnf(#          and CAD.ID_DECLARACAO=DE.ID_DECLARACAO
bddnf(#          and CAD.ID_CADASTRO=NOTA_FISCAL.ID_CADASTRO
bddnf(#       )
bddnf-#    and (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#         where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF) < 999999999999;
                                              QUERY PLAN
------------------------------------------------------------------------------------------------------
 Seq Scan on nota_fiscal  (cost=0.00..304553034.26 rows=332116 width=199)
   Filter: ((subplan) AND ((subplan) < 999999999999::numeric))
   SubPlan
     ->  Aggregate  (cost=123.91..123.92 rows=1 width=12)
           ->  Bitmap Heap Scan on item_nota  (cost=2.14..123.80 rows=41 width=12)
                 Recheck Cond: (id_nf = $0)
                 ->  Bitmap Index Scan on fki_item_nota_id_nf_fkey  (cost=0.00..2.14 rows=41 width=0)
                       Index Cond: (id_nf = $0)
     ->  Nested Loop  (cost=0.00..8.24 rows=1 width=4)
           ->  Index Scan using cadastro_pkey on cadastro cad  (cost=0.00..5.01 rows=1 width=8)
                 Index Cond: (id_cadastro = $1)
           ->  Index Scan using declaracao_pkey on declaracao de  (cost=0.00..3.22 rows=1 width=4)
                 Index Cond: ("outer".id_declaracao = de.id_declaracao)
                 Filter: (id_arquivo = 10)
     ->  Aggregate  (cost=123.91..123.92 rows=1 width=12)
           ->  Bitmap Heap Scan on item_nota  (cost=2.14..123.80 rows=41 width=12)
                 Recheck Cond: (id_nf = $0)
                 ->  Bitmap Index Scan on fki_item_nota_id_nf_fkey  (cost=0.00..2.14 rows=41 width=0)
                       Index Cond: (id_nf = $0)
(19 registros)

bddnf=#

bddnf=# analyze;
ANALYZE
bddnf=# explain
bddnf-#  update NOTA_FISCAL
bddnf-#  set VA_TOTAL_ITENSDNF = (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#                           where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF)
bddnf-#  where exists
bddnf-#       (select CAD.ID_CADASTRO
bddnf(#        from DECLARACAO DE, CADASTRO CAD
bddnf(#        where DE.ID_ARQUIVO in (10)
bddnf(#          and CAD.ID_DECLARACAO=DE.ID_DECLARACAO
bddnf(#          and CAD.ID_CADASTRO=NOTA_FISCAL.ID_CADASTRO
bddnf(#       )
bddnf-#    and (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#         where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF) < 999999999999;
                                                 QUERY PLAN
------------------------------------------------------------------------------------------------------------
 Seq Scan on nota_fiscal  (cost=0.00..308260737.06 rows=262239 width=199)
   Filter: ((subplan) AND ((subplan) < 999999999999::numeric))
   SubPlan
     ->  Aggregate  (cost=160.78..160.79 rows=1 width=12)
           ->  Index Scan using fki_item_nota_id_nf_fkey on item_nota  (cost=0.00..160.65 rows=53 width=12)
                 Index Cond: (id_nf = $0)
     ->  Nested Loop  (cost=0.00..8.29 rows=1 width=4)
           ->  Index Scan using cadastro_pkey on cadastro cad  (cost=0.00..5.01 rows=1 width=8)
                 Index Cond: (id_cadastro = $1)
           ->  Index Scan using declaracao_pkey on declaracao de  (cost=0.00..3.27 rows=1 width=4)
                 Index Cond: ("outer".id_declaracao = de.id_declaracao)
                 Filter: (id_arquivo = 10)
     ->  Aggregate  (cost=160.78..160.79 rows=1 width=12)
           ->  Index Scan using fki_item_nota_id_nf_fkey on item_nota  (cost=0.00..160.65 rows=53 width=12)
                 Index Cond: (id_nf = $0)
(15 registros)

bddnf=#
bddnf=# explain
bddnf-# update NOTA_FISCAL
bddnf-# set VA_TOTAL_ITENSDNF = (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#        where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF)
bddnf-#        where NOTA_FISCAL.ID_CADASTRO
bddnf-#              in (select CAD.ID_CADASTRO from DECLARACAO DE
bddnf(#                 inner join CADASTRO CAD on (CAD.ID_DECLARACAO=DE.ID_DECLARACAO)
bddnf(#                 where DE.ID_ARQUIVO in (10)  )
bddnf-#        and (select sum(ITEM_NOTA.VA_TOTAL) from ITEM_NOTA
bddnf(#           where ITEM_NOTA.ID_NF = NOTA_FISCAL.ID_NF) < 999999999999;
                                                      QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------
 Nested Loop  (cost=92.39..1867678.84 rows=384 width=199)
   ->  HashAggregate  (cost=92.39..92.50 rows=11 width=4)
         ->  Nested Loop  (cost=2.01..92.36 rows=11 width=4)
               ->  Index Scan using fki_declaracao_id_arquivo_fkey on declaracao de  (cost=0.00..18.00 rows=7 width=4)
                     Index Cond: (id_arquivo = 10)
               ->  Bitmap Heap Scan on cadastro cad  (cost=2.01..10.59 rows=3 width=8)
                     Recheck Cond: (cad.id_declaracao = "outer".id_declaracao)
                     ->  Bitmap Index Scan on fki_cadastro_id_declaracao_fkey  (cost=0.00..2.01 rows=3 width=0)
                           Index Cond: (cad.id_declaracao = "outer".id_declaracao)
   ->  Index Scan using fki_nota_fiscal_id_cadastro_fkey on nota_fiscal  (cost=0.00..164163.21 rows=339 width=199)
         Index Cond: (nota_fiscal.id_cadastro = "outer".id_cadastro)
         Filter: ((subplan) < 999999999999::numeric)
         SubPlan
           ->  Aggregate  (cost=160.78..160.79 rows=1 width=12)
                 ->  Index Scan using fki_item_nota_id_nf_fkey on item_nota  (cost=0.00..160.65 rows=53 width=12)
                       Index Cond: (id_nf = $0)
   SubPlan
     ->  Aggregate  (cost=160.78..160.79 rows=1 width=12)
           ->  Index Scan using fki_item_nota_id_nf_fkey on item_nota  (cost=0.00..160.65 rows=53 width=12)
                 Index Cond: (id_nf = $0)
(20 registros)

bddnf=#
bddnf=# explain select count(distinct NF.ID_NF) as contagem, DE.AM_REFERENCIA as campo from DECLARACAO DE  inner join CADASTRO CAD on (CAD.ID_DECLARACAO=DE.ID_DECLARACAO) inner join NOTA_FISCAL NF on (NF.ID_CADASTRO=CAD.ID_CADASTRO) inner join EMPRESA EMP on (EMP.ID_EMPRESA=DE.ID_EMPRESA) inner join ARQUIVO_PROCESSADO ARQ on (ARQ.ID_ARQUIVO=DE.ID_ARQUIVO) group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;
                                                         QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=307137.23..319854.59 rows=15 width=8)
   ->  Sort  (cost=307137.23..311376.29 rows=1695623 width=8)
         Sort Key: de.am_referencia
         ->  Hash Join  (cost=2092.60..115079.58 rows=1695623 width=8)
               Hash Cond: ("outer".id_cadastro = "inner".id_cadastro)
               ->  Seq Scan on nota_fiscal nf  (cost=0.00..57879.23 rows=1695623 width=8)
               ->  Hash  (cost=2053.91..2053.91 rows=15475 width=8)
                     ->  Hash Join  (cost=781.54..2053.91 rows=15475 width=8)
                           Hash Cond: ("outer".id_declaracao = "inner".id_declaracao)
                           ->  Seq Scan on cadastro cad  (cost=0.00..730.75 rows=15475 width=8)
                           ->  Hash  (cost=757.12..757.12 rows=9768 width=8)
                                 ->  Hash Join  (cost=94.14..757.12 rows=9768 width=8)
                                       Hash Cond: ("outer".id_empresa = "inner".id_empresa)
                                       ->  Hash Join  (cost=1.13..444.33 rows=9768 width=12)
                                             Hash Cond: ("outer".id_arquivo = "inner".id_arquivo)
                                             ->  Seq Scan on declaracao de  (cost=0.00..296.68 rows=9768 width=16)
                                             ->  Hash  (cost=1.10..1.10 rows=10 width=4)
                                                   ->  Seq Scan on arquivo_processado arq  (cost=0.00..1.10 rows=10 width=4)
                                       ->  Hash  (cost=83.61..83.61 rows=3761 width=4)
                                             ->  Seq Scan on empresa emp  (cost=0.00..83.61 rows=3761 width=4)
(20 registros)

bddnf=#
bddnf=# explain select count(distinct NF.ID_NF) as contagem,
bddnf-#   DE.AM_REFERENCIA as campo
bddnf-#     from DECLARACAO DE, CADASTRO CAD, NOTA_FISCAL NF, EMPRESA EMP,
bddnf-#        ARQUIVO_PROCESSADO ARQ
bddnf-#     where CAD.ID_DECLARACAO=DE.ID_DECLARACAO and
bddnf-#           NF.ID_CADASTRO=CAD.ID_CADASTRO and
bddnf-#           EMP.ID_EMPRESA=DE.ID_EMPRESA and
bddnf-#           ARQ.ID_ARQUIVO=DE.ID_ARQUIVO
bddnf-#     group by DE.AM_REFERENCIA order by DE.AM_REFERENCIA ;
                                                         QUERY PLAN
-----------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=286840.07..299974.79 rows=15 width=8)
   ->  Sort  (cost=286840.07..291218.25 rows=1751270 width=8)
         Sort Key: de.am_referencia
         ->  Hash Join  (cost=2019.34..88067.09 rows=1751270 width=8)
               Hash Cond: ("outer".id_cadastro = "inner".id_cadastro)
               ->  Seq Scan on nota_fiscal nf  (cost=0.00..59778.70 rows=1751270 width=8)
               ->  Hash  (cost=1980.65..1980.65 rows=15475 width=8)
                     ->  Hash Join  (cost=708.28..1980.65 rows=15475 width=8)
                           Hash Cond: ("outer".id_declaracao = "inner".id_declaracao)
                           ->  Seq Scan on cadastro cad  (cost=0.00..730.75 rows=15475 width=8)
                           ->  Hash  (cost=683.86..683.86 rows=9768 width=8)
                                 ->  Hash Join  (cost=94.14..683.86 rows=9768 width=8)
                                       Hash Cond: ("outer".id_empresa = "inner".id_empresa)
                                       ->  Hash Join  (cost=1.13..444.33 rows=9768 width=12)
                                             Hash Cond: ("outer".id_arquivo = "inner".id_arquivo)
                                             ->  Seq Scan on declaracao de  (cost=0.00..296.68 rows=9768 width=16)
                                             ->  Hash  (cost=1.10..1.10 rows=10 width=4)
                                                   ->  Seq Scan on arquivo_processado arq  (cost=0.00..1.10 rows=10 width=4)
                                       ->  Hash  (cost=83.61..83.61 rows=3761 width=4)
                                             ->  Seq Scan on empresa emp  (cost=0.00..83.61 rows=3761 width=4)
(20 registros)

bddnf=#
bddnf=#