transaction in mysql stored procedure - mysql

Question

I want to write stored proc with transaction. Suppose, proc1 is calling another proc(proc2) in transaction block. proc2 also contains rollback/commit. If rollback happens in proc1, does rollback happen in proc2 also ??
I have tried following example but it didn't work.
Here is the following code
test1.sql
DELIMITER $$
DROP PROCEDURE IF EXISTS `debug`.`test1`$$
CREATE DEFINER=`root`#`localhost` PROCEDURE `test1`()
begin
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET #errorOccurred :=2;
set #errorOccurred :=1;
START TRANSACTION;
insert into Table1 values("table1_1");
insert into debug values("insertStatement_1");
insert into Table1 values(1,2);
call test2();
if (#errorOccurred=2) then
ROLLBACK;
else
COMMIT;
end if;
end$$
DELIMITER ;
=========================================
test2.sql
DELIMITER $$
DROP PROCEDURE IF EXISTS `debug`.`test2`$$
CREATE DEFINER=`root`#`localhost` PROCEDURE `test2`()
begin
START TRANSACTION;
create table Table2 (msg varchar(255)) ENGINE=InnoDB;
insert into Table2 values("table2_value");
COMMIT;
end$$
DELIMITER ;
Could you please help me to solve my problem.
Thank you in advance.

Answer 1

Here is something interesting: Once you run START TRANSACTION, any open transaction will implicitly commit. I wrote about this in the DBA StackExchange: March 15, 2013 : MySQL backup InnoDB.
SUGGESTION : I would remove START TRANSACTION; and COMMIT; from test2.sql.
Give it a Try !!!
UPDATE 2013-10-28 09:16 EDT
If you can calling a transaction within a transaction, you cannot do START TRANSACTION a second time. If you want to rollback from test2 and keep test1 in a transaction from the point of calling test2, you should look into using SAVEPOINT and ROLLBACK TO SAVEPOINT in the MySQL Docuementation.
Basically, you would create the SAVEPOINT in test1 just before calling test2. You would rollback to the SAVEPOINT if test2 fails in anyway.