I have a class in my project. On the class I need to do two inner select, to know is there any duplication or not, but I think if I get duplication error and then manage that is better than to select. ...
Pros and Cons of Checking if value exist for unique column or let db raise unique error on inserting
While writing a query other day a thought came to me and have stuck in my mind. What is preferable, first checking if a value for a unique column exists and then inserting or insert and let db raise ...
In an EXIT HANDLER block, what are the MySQL equivalents of OBJECT_SCHEMA_NAME(@@PROCID) + '.' + OBJECT_NAME(@@PROCID) ERROR_MESSAGE() Edit What I want to do. In SQL Server I'd have CREATE PROC ...