Thread: 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 ' . $tablename .
'<br />';
return 0;
}
}
Re: postgresql primarykeys foreignkeys tablenames screenfieldlength
From
"Christopher Kings-Lynne"
Date:
I suggest looking at the source code for postgres's JDBC driver or WebDB (http://phpgpadmin.sourceforge.net/). Chris > -----Original Message----- > From: pgsql-php-owner@postgresql.org > [mailto:pgsql-php-owner@postgresql.org]On Behalf Of Kevin Gordon > Sent: Tuesday, 21 January 2003 2:58 PM > To: pgsql-php@postgresql.org > Subject: [PHP] postgresql primarykeys foreignkeys tablenames > screenfieldlength > > > Any suggestions or improvements to the following code would be much > appreciated. Please send me an email: > > function kgtables () > { > if ($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 ' . $tablename . > '<br />'; > return 0; > } > } > > > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org) >
Many thanks Chris for your suggestion re phppgadmin. The code very interesting. I could not find any code re foreign keys but a good source of examples and techique. My code works ok. Just thought it may be improved. Thanks again. Kevin On Tue, 2003-01-21 at 20:25, Christopher Kings-Lynne wrote: > I suggest looking at the source code for postgres's JDBC driver or WebDB > (http://phpgpadmin.sourceforge.net/). > > Chris > > > -----Original Message----- > > From: pgsql-php-owner@postgresql.org > > [mailto:pgsql-php-owner@postgresql.org]On Behalf Of Kevin Gordon > > Sent: Tuesday, 21 January 2003 2:58 PM > > To: pgsql-php@postgresql.org > > Subject: [PHP] postgresql primarykeys foreignkeys tablenames > > screenfieldlength > > > > > > Any suggestions or improvements to the following code would be much > > appreciated. Please send me an email: > > > > function kgtables () > > { > > if ($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; > > } > > } > > > > > > > > > > > > > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 2: you can get off all lists at once with the unregister command > > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org) > > > >