Re: Need SQL of create TABLE including INDEX and SEQUENCE

On Apr 11, 2011, at 11:54 PM, Francisco Leovey wrote:

> I am not sure I will understand the code inside PG_DUMP
>
> I could call PG_DUMP and store the info on a text file and then read it into my program and then issue an SQL command
> But I was hoping to get the info directly from the Postgres tables using some fancy query.
>
> I am using some queries that give me a list of tables and a list of fields in a table but now I need the actual SQL as shown on PgAdmin
>
> Maybe somebody knows the way PgAdmin generates it

pgAdmin runs multiple commands to get the definition of Table. Some of those commands are given below, which you can wrap in function to give you the definition of table:

SELECT att.*, def.*, pg_catalog.pg_get_expr(def.adbin, def.adrelid) AS defval, CASE WHEN att.attndims > 0 THEN 1 ELSE 0 END AS isarray, format_type(ty.oid,NULL) AS typname, format_type(ty.oid,att.atttypmod) AS displaytypname, tn.nspname as typnspname, et.typname as elemtypname,
ty.typstorage AS defaultstorage, cl.relname, na.nspname, att.attstattarget, description, cs.relname AS sername, ns.nspname AS serschema,
(SELECT count(1) FROM pg_type t2 WHERE t2.typname=ty.typname) > 1 AS isdup, indkey,
CASE
WHEN inh.inhparent IS NOT NULL AND att.attinhcount>0
THEN inh.inhparent::regclass
ELSE NULL
END AS inhrelname,
attoptions,
EXISTS(SELECT 1 FROM pg_constraint WHERE conrelid=att.attrelid AND contype='f' AND att.attnum=ANY(conkey)) As isfk
FROM pg_attribute att
JOIN pg_type ty ON ty.oid=atttypid
JOIN pg_namespace tn ON tn.oid=ty.typnamespace
JOIN pg_class cl ON cl.oid=att.attrelid
JOIN pg_namespace na ON na.oid=cl.relnamespace
LEFT OUTER JOIN pg_inherits inh ON inh.inhrelid=att.attrelid
LEFT OUTER JOIN pg_type et ON et.oid=ty.typelem
LEFT OUTER JOIN pg_attrdef def ON adrelid=att.attrelid AND adnum=att.attnum
LEFT OUTER JOIN pg_description des ON des.objoid=att.attrelid AND des.objsubid=att.attnum
LEFT OUTER JOIN (pg_depend JOIN pg_class cs ON objid=cs.oid AND cs.relkind='S') ON refobjid=att.attrelid AND refobjsubid=att.attnum
LEFT OUTER JOIN pg_namespace ns ON ns.oid=cs.relnamespace
LEFT OUTER JOIN pg_index pi ON pi.indrelid=att.attrelid AND indisprimary
WHERE att.attrelid = 53395::oid
AND att.attnum > 0
AND att.attisdropped IS FALSE
ORDER BY att.attnum;
SELECT DISTINCT ON(cls.relname) cls.oid, cls.relname as idxname, indrelid, indkey, indisclustered, indisunique, indisprimary, n.nspname,
indnatts, cls.reltablespace AS spcoid, spcname, tab.relname as tabname, indclass, con.oid AS conoid, CASE contype WHEN 'p' THEN desp.description WHEN 'u' THEN desp.description ELSE des.description END AS description,
pg_get_expr(indpred, indrelid, true) as indconstraint, contype, condeferrable, condeferred, amname
, substring(array_to_string(cls.reloptions, ',') from 'fillfactor=([0-9]*)') AS fillfactor
FROM pg_index idx
JOIN pg_class cls ON cls.oid=indexrelid
JOIN pg_class tab ON tab.oid=indrelid
LEFT OUTER JOIN pg_tablespace ta on ta.oid=cls.reltablespace
JOIN pg_namespace n ON n.oid=tab.relnamespace
JOIN pg_am am ON am.oid=cls.relam
LEFT JOIN pg_depend dep ON (dep.classid = cls.tableoid AND dep.objid = cls.oid AND dep.refobjsubid = '0')
LEFT OUTER JOIN pg_constraint con ON (con.tableoid = dep.refclassid AND con.oid = dep.refobjid)
LEFT OUTER JOIN pg_description des ON des.objoid=cls.oid
LEFT OUTER JOIN pg_description desp ON (desp.objoid=con.oid AND desp.objsubid = 0)
WHERE indrelid = 53395::oid AND contype='p'

ORDER BY cls.relname;
SELECT ct.oid, conname, condeferrable, condeferred, confupdtype, confdeltype, confmatchtype, conkey, confkey, confrelid, nl.nspname as fknsp, cl.relname as fktab, nr.nspname as refnsp, cr.relname as reftab, description
FROM pg_constraint ct
JOIN pg_class cl ON cl.oid=conrelid
JOIN pg_namespace nl ON nl.oid=cl.relnamespace
JOIN pg_class cr ON cr.oid=confrelid
JOIN pg_namespace nr ON nr.oid=cr.relnamespace
LEFT OUTER JOIN pg_description des ON des.objoid=ct.oid
WHERE contype='f' AND conrelid = 53395::oid
ORDER BY conname;

SELECT DISTINCT ON(cls.relname) cls.oid, cls.relname as idxname, indrelid, indkey, indisclustered, indisunique, indisprimary, n.nspname,
indnatts, cls.reltablespace AS spcoid, spcname, tab.relname as tabname, indclass, con.oid AS conoid, CASE contype WHEN 'p' THEN desp.description WHEN 'u' THEN desp.description ELSE des.description END AS description,
pg_get_expr(indpred, indrelid, true) as indconstraint, contype, condeferrable, condeferred, amname
, substring(array_to_string(cls.reloptions, ',') from 'fillfactor=([0-9]*)') AS fillfactor
FROM pg_index idx
JOIN pg_class cls ON cls.oid=indexrelid
JOIN pg_class tab ON tab.oid=indrelid
LEFT OUTER JOIN pg_tablespace ta on ta.oid=cls.reltablespace
JOIN pg_namespace n ON n.oid=tab.relnamespace
JOIN pg_am am ON am.oid=cls.relam
LEFT JOIN pg_depend dep ON (dep.classid = cls.tableoid AND dep.objid = cls.oid AND dep.refobjsubid = '0')
LEFT OUTER JOIN pg_constraint con ON (con.tableoid = dep.refclassid AND con.oid = dep.refobjid)
LEFT OUTER JOIN pg_description des ON des.objoid=cls.oid
LEFT OUTER JOIN pg_description desp ON (desp.objoid=con.oid AND desp.objsubid = 0)
WHERE indrelid = 53395::oid AND contype='u'

ORDER BY cls.relname;
SELECT c.oid, conname, relname, nspname, description,
pg_get_expr(conbin, conrelid, true) as consrc
FROM pg_constraint c
JOIN pg_class cl ON cl.oid=conrelid
JOIN pg_namespace nl ON nl.oid=relnamespace
LEFT OUTER JOIN pg_description des ON des.objoid=c.oid
WHERE contype = 'c' AND conrelid = 53395::oid
ORDER BY conname;
SELECT DISTINCT ON(cls.relname) cls.oid, cls.relname as idxname, indrelid, indkey, indisclustered, indisunique, indisprimary, n.nspname,
indnatts, cls.reltablespace AS spcoid, spcname, tab.relname as tabname, indclass, con.oid AS conoid, CASE contype WHEN 'p' THEN desp.description WHEN 'u' THEN desp.description ELSE des.description END AS description,
pg_get_expr(indpred, indrelid, true) as indconstraint, contype, condeferrable, condeferred, amname
, substring(array_to_string(cls.reloptions, ',') from 'fillfactor=([0-9]*)') AS fillfactor
FROM pg_index idx
JOIN pg_class cls ON cls.oid=indexrelid
JOIN pg_class tab ON tab.oid=indrelid
LEFT OUTER JOIN pg_tablespace ta on ta.oid=cls.reltablespace
JOIN pg_namespace n ON n.oid=tab.relnamespace
JOIN pg_am am ON am.oid=cls.relam
LEFT JOIN pg_depend dep ON (dep.classid = cls.tableoid AND dep.objid = cls.oid AND dep.refobjsubid = '0')
LEFT OUTER JOIN pg_constraint con ON (con.tableoid = dep.refclassid AND con.oid = dep.refobjid)
LEFT OUTER JOIN pg_description des ON des.objoid=cls.oid
LEFT OUTER JOIN pg_description desp ON (desp.objoid=con.oid AND desp.objsubid = 0)
WHERE indrelid = 53395::oid
AND conname IS NULL
ORDER BY cls.relname;
SELECT rw.oid, rw.*, relname, CASE WHEN relkind = 'r' THEN TRUE ELSE FALSE END AS parentistable, nspname, description,
pg_get_ruledef(rw.oid, true) AS definition
FROM pg_rewrite rw
JOIN pg_class cl ON cl.oid=rw.ev_class
JOIN pg_namespace nsp ON nsp.oid=cl.relnamespace
LEFT OUTER JOIN pg_description des ON des.objoid=rw.oid
WHERE ev_class = 53395
ORDER BY rw.rulename;
SELECT t.oid, t.xmin, t.*, relname, nspname, des.description, l.lanname, p.prosrc,
trim(substring(pg_get_triggerdef(t.oid), 'WHEN (.*) EXECUTE PROCEDURE'), '()') AS whenclause
FROM pg_trigger t
JOIN pg_class cl ON cl.oid=tgrelid
JOIN pg_namespace na ON na.oid=relnamespace
LEFT OUTER JOIN pg_description des ON des.objoid=t.oid
LEFT OUTER JOIN pg_proc p ON p.oid=t.tgfoid
LEFT OUTER JOIN pg_language l ON l.oid=p.prolang
WHERE NOT tgisinternal
AND tgrelid = 53395::oid
ORDER BY tgname;

Thanks & Regards,
Vibhor Kumar
EnterpriseDB Corporation
The Enterprise PostgreSQL Company
vibhor(dot)kumar(at)enterprisedb(dot)com
Blog:http://vibhork.blogspot.com