wikimedia / mediawiki

		return $ok;

	}

	public function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds,

		$fname = __METHOD__

	) {

		if ( !$conds ) {

			throw new DBUnexpectedError( $this, __METHOD__ . ' called with empty $conds' );

		}

		$delTable = $this->tableName( $delTable );

		$joinTable = $this->tableName( $joinTable );

		$sql = "DELETE FROM $delTable WHERE $delVar IN (SELECT $joinVar FROM $joinTable ";

		if ( $conds != '*' ) {

			$sql .= 'WHERE ' . $this->makeList( $conds, self::LIST_AND );

		}

		$sql .= ')';

		$this->query( $sql, $fname );

	}

	/**

	 * Returns the size of a text field, or -1 for "unlimited"

	 * @throws DBUnexpectedError

	 * @return bool|ResultWrapper

	 */

	function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = __METHOD__ ) {

		if ( !$conds ) {

			throw new DBUnexpectedError( $this, __METHOD__ . ' called with empty $conds' );

		}

		$delTable = $this->tableName( $delTable );

		$joinTable = $this->tableName( $joinTable );

		$sql = "DELETE $delTable FROM $delTable, $joinTable WHERE $delVar=$joinVar ";

		if ( $conds != '*' ) {

			$sql .= ' AND ' . $this->makeList( $conds, self::LIST_AND );

		}

		return $this->query( $sql, $fname );

	}

	/**

	 * @param string $table