function getLinkedSequence($table, $field_name)
{
$query = "SELECT\n (SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128)\n FROM pg_attrdef d\n WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef) as default\n FROM pg_attribute a, pg_class c\n WHERE c.relname = " . $this->oDbh->quote($table, 'text') . "\n AND c.oid = a.attrelid\n AND NOT a.attisdropped\n AND a.attnum > 0\n AND a.attname = " . $this->oDbh->quote($field_name, 'text') . "\n ORDER BY a.attnum";
$column = $this->oDbh->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
if (!PEAR::isError($column)) {
if (preg_match('/nextval\\(\'(.*?)\'/', $column['default'], $m)) {
return $m[1];
}
}
return false;
}
