sql server 的判断语句

方案1、使用 CASE 关键字 SELECT CAST( CASE WHEN Obsolete = 'N' or InStock = 'Y' THEN 1 ELSE 0 END AS bit) as Saleable, * FROM Product SELECT CAST( CASE WHEN Obsolete = 'N' or InStock = 'Y' THEN 1 ELSE 0 END AS

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