>hi there!
>
>it seems logical to me that using CASE...END in an ORDER BY clause ought
>to work. i can set up a CASE statement in a SELECT:
>
>SELECT CASE test.ID WHERE 1 THEN 2 WHERE 2 THEN 1 END AS c
>
>and i get the expected output. however, if i then try to move the whole
>case statement into the clause (ORDER BY CASE test.ID...END), then mysql
>seems to completely ignore the CASE...END instead; i.e. the table is
>sorted as it would be without the CASE...END (if i do ORDER BY CASE
>test.ID...END, test.name - then it will simply be ordered by test.name).
>
>additionally, if i leave the SELECT CASE...END AS c and then try to
>ORDER BY c, mysql complains that column c is not known.
>
>any ideas on what i'm missing here? this is using 3.23.32, compiled
>today. it did the same thing with a .27-gamma release.
>
>thanks.
Sir, in the manual, the CASE structure is listed under the following heading:
7.4 Functions for Use in SELECT and WHERE Clauses
Actually, I tried to look it up once before and couldn't find it, so
I was sure that MySQL didn't support it. Your post prompted me to try
looking it up again. I owe you some thanks for prompting me to
correct my error.
Bob Hall
Know thyself? Absurd direction!
Bubbles bear no introspection. -Khushhal Khan Khatak
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