In which conditions, MySQL CASE statement return NULL?
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SQL CASE Statement
You can't delete other events. In MySQL, decode is a deprecated cryptographic function. These aggregations are not exactly the ones we wanted. Development Versions: Ten Centuries. In SQL Null is both a value as well as a keyword. Copyright by Refsnes Data. Post as a guest Name. This is similar to the switch statement in C. Leave a Reply Cancel reply Enter your comment here You can't delete your own events.
MySQL IS NULL & IS NOT NULL Tutorial with EXAMPLES
As described in Section 4.
MySQL :: CASE Statement Checking Null
You can't post or upload images. Page address: Joe Doherty A guide to database performance for developers. In order to avoid such situations from happening, we can employ the use of the NOT NULL clause to limit the results on which our data operates.
The undefined evaluation process can have unpredictable side effects.