Re: CASE statement and version 4.1.x

[Daniel Kasak]

Homam S.A. wrote:
In the documentation, it doesn't mention which version
of MySQL supports the CASE statement, but it refers to
stored procedures, so is it only supported for 5.x?
I can't get any example of a CASE statement work in
MySQL.
 

<snipped>
For example, I can execute the following in MS SQL
Server:
UPDATE MyTable
SET
field1 = CASE WHEN field3 = 1 THEN 10 ELSE 20 END,
field2 = field2 | CASE WHEN field4 = 'B' THEN 1 ELSE 0
END | CASE WHEN field4 = 'C' THEN 2 ELSE 0 END
 

Case works in 4.0.x ( and maybe before, haven't checked ).
Your problem is elsewhere.
I'm not sure if you can use the pipe symbol as an OR operator in the way 
you want - to be honest I haven't used it at all in SQL.
Try rewriting it to use nothing but case statements ( no | operators ).

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