CASE input_expression
WHEN when_expression THEN result_expression
[ ...n ]
[
ELSE else_result_expression
END
當條件when_expression為Null時該怎樣寫呢?
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簡單 CASE 函數問題!
簡單 CASE 函數:SQL SERVER2000 CASE input_expression WHEN when_expression THEN result_expression [ ...n ] [ ELSE else_result_expression END 當條件when_expression為Null時該怎樣寫呢?