In the following CASE statement, is it possible to put a SELECT ... WHERE
EXISTS
in the <condition> of a CASE statement, and have it work?
The <condition> I want to do is to yield a result of '1' if the statement
finds
the value 'a' in a table (EXISTS evaluates true), and '0' if it evaluates
false
('a' not found).
SELECT a, CASE WHEN <CONDITION> THEN 1 ELSE 0 END
Has anybody done this? If so, can you send me a sample?