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left join 如何增加where条件(在on的后面),这很重要
SELECT [学号], [姓名],[备注2],[年级],专业,[学院],[x30] FROM [总表] left join k指标体系 on 学号 = x01 where 年级='2014'
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原文地址:https://www.cnblogs.com/qqhfeng/p/9280647.html
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