routine.sql

DECLARE errcount INT;
DECLARE errno INT;
DECLARE msg TEXT;
DECLARE vNoRec INTEGER DEFAULT 0;
DECLARE vException INTEGER DEFAULT 0;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET vNoRec = 1;

DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
    BEGIN
        SET vException = 1;
        GET CURRENT DIAGNOSTICS CONDITION 1 errno = MYSQL_ERRNO, msg = MESSAGE_TEXT;

        GET CURRENT DIAGNOSTICS errcount = NUMBER;
        IF errcount <> 0 THEN
            GET CURRENT DIAGNOSTICS CONDITION 1 errno = MYSQL_ERRNO, msg = MESSAGE_TEXT;
        END IF;

        GET STACKED DIAGNOSTICS CONDITION 1 errno = MYSQL_ERRNO, msg = MESSAGE_TEXT;
    END;
    
START TRANSACTION;

# КАКОЙ-ТО sql запрос
    
    
IF vException = 1 THEN
    ROLLBACK;
    SELECT 'SOME_ERROR_MESSAGE' AS resultCode, errno AS resultErrNo, msg AS resultErrMsg;
    LEAVE proc;
END IF;