Re: postgresql primarykeys foreignkeys tablenames screenfieldlength

I suggest looking at the source code for postgres's JDBC driver or WebDB
(http://phpgpadmin.sourceforge.net/).

Chris

> -----Original Message-----
> From: pgsql-php-owner(at)postgresql(dot)org
> [mailto:pgsql-php-owner(at)postgresql(dot)org]On Behalf Of Kevin Gordon
> Sent: Tuesday, 21 January 2003 2:58 PM
> To: pgsql-php(at)postgresql(dot)org
> Subject: [PHP] postgresql primarykeys foreignkeys tablenames
> screenfieldlength
>
>
> Any suggestions or improvements to the following code would be much
> appreciated. Please send me an email:
>
> function kgtables ()
> {
> if ($this->connection)
> {
> $tablelist = "";
> $sql = "SELECT " .
> "ic.relname " .
> "FROM " .
> "pg_class ic " .
> "WHERE " .
> "ic.relname not
> like 'pg%' " .
> "AND ic.relname not
> like '%pk' " .
> "AND ic.relname not
> like '%idx' ";
> $tablelist = pg_query ($this->connection, $sql);
> $this->num_tables = pg_num_rows($tablelist);
> for ($i=0; $i < $this->num_tables; $i++)
> {
> $r = pg_fetch_row($tablelist);
> $obj->{$i + 1} = $r[0];
> }
> pg_free_result ($tablelist);
> return $obj;
> }
> else
> {
> echo 'Error: failed to name the tables <br />';
> return 0;
> }
> }
>
> function kgprimarykeys ($tablename = "")
> {
> if ( $this->connection && $tablename != "" )
> {
> $keylist = "";
> $sql = "SELECT " .
> "ic.relname AS
> index_name, " .
> "bc.relname AS
> tab_name, " .
> "ta.attname AS
> column_name, " .
> "i.indisunique AS
> unique_key, " .
> "i.indisprimary AS
> primary_key " .
> "FROM " .
> "pg_class bc, " .
> "pg_class ic, " .
> "pg_index i, " .
> "pg_attribute ta, " .
> "pg_attribute ia " .
> "WHERE " .
> "bc.oid = i.indrelid " .
> "AND ic.oid =
> i.indexrelid " .
> "AND ia.attrelid =
> i.indexrelid " .
> "AND ta.attrelid =
> bc.oid " .
> "AND bc.relname =
> '" . $tablename . "' " .
> "AND ta.attrelid =
> i.indrelid " .
> "AND ta.attnum =
> i.indkey[ia.attnum-1] " .
> "ORDER BY " .
> "index_name,
> tab_name, column_name";
> $keylist = pg_query ($this->connection, $sql);
> $this->num_primarykeys = pg_num_rows($keylist);
> $j = 1;
> for ($i=0; $i < $this->num_primarykeys; $i++)
> {
> $r = pg_fetch_row($keylist);
> // echo "Primary Key: $r[0], $r[1],
> $r[2], $r[3], $r[4], </br>";
> if ( $r[4] == TRUE)
> {
> $obj->{$j} = $r[2];
> $j++;
> }
> }
> pg_free_result ($keylist);
> return $obj;
> }
> else
> {
> echo 'Error: failed to name the primary
> keys in ' . $tablename . '<br
> />';
> return 0;
> }
> }
>
> function kgforeignkeys ($tablename = "" )
> {
> if ( $this->connection && $tablename != "" )
> {
> $keylist = "";
> $sql = "SELECT conname,
> pg_catalog.pg_get_constraintdef(oid) as condef
> FROM
> pg_catalog.pg_constraint r
> WHERE r.conrelid =
> (SELECT c.oid
> FROM
> pg_catalog.pg_class c
> LEFT JOIN
> pg_catalog.pg_namespace n
> ON n.oid =
> c.relnamespace
> WHERE
> pg_catalog.pg_table_is_visible(c.oid)
> AND
> c.relname ~ '^" . $tablename . "$' )
> AND r.contype = 'f'";
>
> $keylist = pg_query ($this->connection, $sql);
> $num_rows = pg_num_rows($keylist);
> for ($i=0; $i < $num_rows; $i++)
> {
> $r = pg_fetch_row($keylist);
> // echo "Field: $r[0], $r[1] </br>";
> $phrase = split("\(|\)", $r[1]);
> echo "Phrase: $phrase[0],
> $phrase[1], $phrase[2], $phrase[3],
> $phrase[4] </br>";
> // $obj->{$i} = $len[1];
> $kgArr[$i][0][0] = $tablename;
> $word1 = split(",", $phrase[1]);
> echo (count($word1));
> echo "Word: $word1[0]; $word1[1] </br>";
> for ($j=1; $j <= count($word1); $j++)
> {
> $kgArr[$i][0][$j] =
> trim($word1[$j - 1]);
> }
> $kgArr[$i][1][0] =
> trim(Substr($phrase[2], strrpos($phrase[2], "
> ")));
> $word2 = split(",", $phrase[3]);
> echo (count($word2));
> echo "Word: $word2[0]; $word2[1] </br>";
> for ($j=1; $j <= count($word2); $j++)
> {
> $kgArr[$i][1][$j] =
> trim($word2[$j - 1]);
> }
> }
> pg_free_result ($keylist);
> return $kgArr;
> }
> else
> {
> echo 'Error: failed to obtain the foreign
> keys in ' . $tablename .
> '<br />';
> return 0;
> }
> }
>
> function kgfield_length ($field_name = "", $tablename = "" )
> {
> if ( $this->connection && $tablename != "" )
> {
> $keylist = "";
> $sql = "SELECT a.attname,
> pg_catalog.format_type(a.atttypid,
> a.atttypmod)
> FROM
> pg_catalog.pg_attribute a
> WHERE a.attrelid =
> (SELECT c.oid
> FROM
> pg_catalog.pg_class c
> LEFT JOIN
> pg_catalog.pg_namespace n
> ON n.oid =
> c.relnamespace
> WHERE
> pg_catalog.pg_table_is_visible(c.oid)
> AND
> c.relname ~ '^" . $tablename . "$' )
> AND a.attnum > 0
> AND NOT a.attisdropped
> ORDER BY a.attnum";
> $keylist = pg_query ($this->connection, $sql);
> $this->num_fields = pg_num_rows($keylist);
> for ($i=0; $i < $this->num_fields; $i++)
> {
> $tempLen = 0;
> $r = pg_fetch_row($keylist);
> // echo "Field: $r[0], $r[1] </br>";
> $len = split("\(|\)", $r[1]);
> echo "Length: $len[0], $len[1],
> $len[2], $len[3] </br>";
> if (trim($len[0]) == "character" ||
> trim($len[0]) == "character
> varying")
> {
> $tempLen = $len[1];
> }
> else
> {
> switch (trim($len[0]))
> {
> case "text":
> $tempLen = 64;
> break;
> case "boolean":
> $tempLen = 1;
> break;
> case "smallint":
> $tempLen = 6;
> break;
> case "integer":
> $tempLen = 10;
> break;
> case "bigint":
> $tempLen = 18;
> break;
> case "timestamp
> without time zone":
> $tempLen = 20;
> break;
> case "timestamp
> with time zone":
> $tempLen = 32;
> break;
> case "interval":
> $tempLen = 10;
> break;
> case "date":
> $tempLen = 10;
> break;
> case "numeric":
> $tempLen =
> trim(Substr($len[1], 0, strpos($len[1], ",")));
> echo $tempLen;
> break;
> case "decimal":
> $tempLen =
> trim(Substr($len[1], 0, strpos($len[1], ",")));
> break;
> case "real":
> $tempLen = 10;
> break;
> case "double precision":
> $tempLen = 20;
> break;
> }
> }
> $obj->{$r[0]} = $tempLen;
> }
> pg_free_result ($keylist);
> return $obj;
> }
> else
> {
> echo 'Error: failed to obtain the field
> length in ' . $tablename .
> '<br />';
> return 0;
> }
> }
>
>
>
>
>
>
>
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