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CASE statement in SQL
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![MSSQL] CASE WHEN 표현식 사용법 (DECODE, IF)](https://blog.kakaocdn.net/dn/bha8up/btrdXxEIlKB/jCjk8U5onQxBZEOykPoakk/img.png "MSSQL] CASE WHEN 표현식 사용법 (DECODE, IF)")