我们常用的操作数据库语言SQL语句在执行的时候需要要先编译,然后执行,而存储过程(Stored Procedure)是一组为了完成特定功能的SQL语句集,经编译后存储在数据库中,用户通过指定存储过程的名字并给定参数(如果该存储过程带有参数)来调用执行它。 一个存储过程是一个可编程的函数,它在数据库中创建并保存。它可以有SQL语句...
I'm trying to create a stored procedure that lets me pass in a table name and return the id of a specific record. I've got a sproc to work - or at least not error but it isn't returning any data and I can't see why. In the sproc, I'm passing in the name of the ...
I think mysql should provide a tool for stored procedure programming with debug facility. 0 mine 15 years ago Can I use a variable name from a cursor loop in an update statement within said loop … in a trigger? OPEN cursor1; cursor_loop:LOOP FETCH cursor1 INTO l_customer_name; IF...
We create the procedure Pow(). We call it using the CALL statement. The result is stored in the @p variable. Finally, we select the @p variable to see its content. Random numbersIn the following example, we will create a procedure which produces five random numbers. From 0 to 9. ...
Bug #5967 Stored procedure declared variable used instead of column Submitted: 7 Oct 2004 22:31Modified: 4 Nov 2007 21:02 Reporter: Peter Gulutzan Email Updates: Status: Verified Impact on me: None Category: MySQL Server: ParserSeverity: S1 (Critical) Version: 5.0.2-alpha-debugOS: Linux...
There is a global mechanism to invalidate all the caches of all the THD threads at once, implemented with the variable atomic_Cversion in file sp_cache.cc, which is incremented by function sp_cache_invalidate(). This global invalidation is used when the server executes DROP PROCEDURE or ALTER...
the mysqladmin debug command, enabling or disabling logging, performing updates even if the read_only system variable is enabled, starting and stopping replication on slave servers, specification of any account in the DEFINER attribute of stored programs and views, ...
Bug #4604 Stored Procedures: View definition with variable is incorrectly accepted Submitted: 18 Jul 2004 22:35Modified: 23 Jul 2004 2:47 Reporter: Trudy Pelzer Email Updates: Status: Closed Impact on me: None Category: MySQL ServerSeverity: S3 (Non-critical) Version: 5.0.1-alpha-debugOS...
If a server option set on the command line or in an option file differs from the name of the corresponding system variable, the variable name is noted immediately below the corresponding option. For system and status variables, the scope of the variable (Var Scope) is Global, Session, or ...
A variable has its own scope. If you declare a variable inside a stored procedure, it will be out of scope when the END of stored procedure reached. If you defined a variable inside block BEGIN/END inside a stored procedure it will be out of scope if the END reached. You can declare...