mysql case when then用法

case when then 的基本用法java SELECT CASE WHEN b.is_leave = 0 THEN '在职' WHEN b.is_leave = 1 THEN '离职' ELSE '状态为空' END FROM sys_user_front a LEFT JOIN sys_org_emp b ON a.info_id = b.info_id WHERE 1 = 1
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