SQL - 分组事务还对商店名称进行分组

Question

SELECT frs_Employee.empnin, empname, COUNT( frs_Payment.empnin ) AS Transaction
FROM frs_Employee, frs_Payment
GROUP BY frs_Payment.empnin

当我编译它时，它给了我相同的名字，但正确的数字。我怎么能让这些名字有所不同？

Answer 1

您需要在empnin上加入表格。您还需要将empname添加到GROUP BY。

SELECT frs_Employee.empnin
       , empname
       , COUNT( frs_Payment.empnin ) AS Transaction
FROM frs_Employee, 
INNER JOIN frs_Payment on frs_Payment.empnin = frs_Employee.empnin
GROUP BY frs_Employee.empnin, empname