Question

How to check if sql statement has been executing before executing another SQL statement.

I make like this

 DECLARE tempId double default 2;
 insert IGNORE  into  `system_users`( `user_id`,`username`,`password`) values (id , userName ,md5(password)) ;

  set tempId= last_insert_id();

  IF tempId <> 0 THEN     
        insert into  `user_profile`(`user_id`, `full_name`, `cellphone`, `Date_time_ added`,`added_by`) values (id, fullName ,cellPhone , CURRENT_TIMESTAMP(),addedBy ) ;

function last_insert_id() doesn’t work with my case because user_id is not auto increment pk, it’s the identification number fot the user. what is the function that is used to test execution of sql statement.

Answer 1

You didn’t specify what DMBS you’re using so I’ll assume MySQL (it looks like MySQL to me, please specify if otherwise) For INSERT statements, use ROW_COUNT()

E.g.

DECLARE tempId double default 2;
 insert IGNORE  into  `system_users`( `user_id`,`username`,`password`) values (id , userName ,md5(password)) ;

set tempId= ROW_COUNT();

This will return the number of affected rows.

Also, note that for SELECT statements, you would use FOUND_ROWS()

e.g.

SELECT SQL_CALC_FOUND_ROWS * FROM MyTable; 
SELECT FOUND_ROWS();

Although this will tell you the total number of rows found, regardless of whether or not you have a LIMIT clause.