无详细内容 无 下午被一条SQL折磨了select EMP_ID,EMP_NUM,NAME from employee WHERE emp_id in ( select distinct E.emp_id from EMPLOYEE E INNER JOIN PROJECT_EMPLOYEE pe on e.emp_id = pe.emp_id INNER JOIN PROJECT p on pe.pro_id = p.pro_id where p
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下午被一条SQL折磨了select EMP_ID,EMP_NUM,NAME from employee WHERE emp_id in ( select <mark>本文来源gaodaimacom搞#代%码@网-</mark>distinct E.emp_id from EMPLOYEE E INNER JOIN PROJECT_EMPLOYEE pe on e.emp_id = pe.emp_id INNER JOIN PROJECT p on pe.pro_id = p.pro_id where pe.pro_id ='B49CBE19481447A68445461E7BE02B13' );//3条数据因为业务上有变更，需要在此SQL基础上加上一些其他限制，修改后的SQL：select EMP_ID,EMP_NUM,NAME from employee WHERE emp_id in ( select distinct E.emp_id from EMPLOYEE E INNER JOIN PROJECT_EMPLOYEE pe on e.emp_id = pe.emp_id INNER JOIN PROJECT p on pe.pro_id = p.pro_id where pe.pro_id ='B49CBE19481447A68445461E7BE02B13' and e.emp_id not in (select s.emp_id from salesteam s ) );//0条数据，把not in 改成in有1条数据纠结很久，发现是因为not in 后面的查询条件select s.emp_id from salesteam s所返回的数据中存在null的原因解决办法就是将not in的子查询中加上is not null的条件select s.emp_id from salesteam s where s.emp_id is not null
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