Doctrine\DBAL\Platforms\PostgreSqlPlatform::getListTableConstraintsSQL PHP Method

    public function getListTableConstraintsSQL($table)
    {
        $table = new Identifier($table);
        $table = $this->quoteStringLiteral($table->getName());
        return "SELECT\n                    quote_ident(relname) as relname\n                FROM\n                    pg_class\n                WHERE oid IN (\n                    SELECT indexrelid\n                    FROM pg_index, pg_class\n                    WHERE pg_class.relname = {$table}\n                        AND pg_class.oid = pg_index.indrelid\n                        AND (indisunique = 't' OR indisprimary = 't')\n                        )";
    }