SQL Anywhere 11 - Check if event exists

问题:

I have an SQL script which creates a scheduled event:

CREATE EVENT "Daily_1200PM" SCHEDULE "Daily_1200PM" START TIME '12:00' EVERY 24 HOURS HANDLER begin     -- Blah blah, do some stuff here end; 

I would like to remove this event, if it exists. I know I can remove the event with the following:

DROP EVENT "Daily_1200PM" 

But for some databases, the the event doesn't actually exist, so an error is thrown.

How do I delete the event only if it exists?

回答1:

if exists( select * from sys.sysevent where event_name='Daily_1200PM' ) then     drop event Daily_1200PM; end if 

文章来源: SQL Anywhere 11 - Check if event exists