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摘要: 要查询的mysql语句: SELECT DISTINCT a.pool_name,a.equipment_name,a.commissioning_time from equipment a,sewage_pool b where a.pool_name=b.pool_name 1、添加VO类:Eq 阅读全文
posted @ 2020-08-24 14:43 meng2113 阅读(3681) 评论(1) 推荐(1)