摘要:
https://www.cnblogs.com/linjiqin/p/11597930.html https://blog.csdn.net/baochanghong/article/details/79682599 阅读全文
摘要:
两个表关联查询去重 select DISTINCT a.TaskNO,b.TaskDetail,a.TaskTime,b.TaskResult from T_Task a,T_TaskDetail b where a.TaskNO=b.TaskNO 阅读全文