题解 | #查找薪水记录超过15次的员工号emp_no以及其对应的记录次数t#
查找薪水记录超过15次的员工号emp_no以及其对应的记录次数t
http://www.nowcoder.com/practice/6d4a4cff1d58495182f536c548fee1ae
考察分组聚合,和聚合后过滤
group by
having
select emp_no ,count(salary) t from salaries group by emp_no having t>15
查找薪水记录超过15次的员工号emp_no以及其对应的记录次数t
http://www.nowcoder.com/practice/6d4a4cff1d58495182f536c548fee1ae
考察分组聚合,和聚合后过滤
group by
having
select emp_no ,count(salary) t from salaries group by emp_no having t>15
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