pg_field_table
(no version information, might be only in CVS)
pg_field_table -- Returns the name or oid of the tables field
Description
mixed
pg_field_table ( resource result, int field_number, bool oid_only )
pg_field_table() returns the name of the table that field
belongs to, or the table's oid if oid_only is TRUE.
Parameters
- result
PostgreSQL query result resource, returned by pg_query(),
pg_query_params() or pg_execute()
(among others).
- field_number
Field number, starting from 0.
- oid_only
By default the tables name that field belongs to is returned but
if oid_only is set to TRUE, then the
oid will instead be returned.
Return Values
On success either the fields table name or oid. Or, FALSE on failure.
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範例 1. Getting table information about a field
<?php $dbconn = pg_connect("dbname=publisher") or die("Could not connect");
$res = pg_query($dbconn, "SELECT bar FROM foo");
echo pg_field_table($res, 0); echo pg_field_table($res, 0, true);
$res = pg_query($dbconn, "SELECT version()"); var_dump(pg_field_table($res, 0)); ?>
|
The above example will output
something similar to: |
Notes
注:
Returning the oid is much faster than returning the table name because
fetching the table name requires a query to the database system table.