Of course it isn’t possible to write
SELECT (some subselect) AS blah FROM t WHERE blah = 'const'
What is the best way to do this?
SELECT (some subselect) FROM t WHERE (some subselect) = 'const'?- View?
- Stored Function?
- HAVING?
- other?
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you can move
(some subselect)as table in theFROM: