Read the result from a query that were run on a [Database]. Read the result from a query that were run on a [Database]. Gets a [String] value from the index-th cell. Gets a bool value from the index-th cell. Gets a double value from the index-th cell. Gets a float value from the index-th cell. Gets a int value from the index-th cell. Returns the current error message (if any). Returns the last inserted row's id. On some database backends this needs to be requested in the query to be available. Is the given cell null. Read the next row. Returns true if success, false if no more rows available.