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CASE式とCASE文の違い

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CASE式とCASE文の違いを知ったので、忘れないように書いておきます。

CASE式

CASE VAR
    WHEN '1' THEN 'aaa'
    WHEN '2' THEN 'bbb'
    WHEN '3' THEN 'ccc'
    WHEN '4' THEN 'ddd'
    ELSE 'zzz'
END

JavaやC#のSwitch文っぽい

CASE文

CASE
    WHEN VAR1 = '1' THEN 'abc'
    WHEN VAR1 = '2' THEN 'def'
    WHEN VAR1 = '3' THEN 'hij'
    WHEN VAR1 = '4' THEN 'klm'
    WHEN VAR1 = '5' AND VAR2 = '1'THEN 'nop'
    ELSE 'xyz'
END
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