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题解 | #对于employees表中,给出奇数行的first_name#
自连接 SELECT s1.emp_no, s1.salary, (SELECT SUM(s2.salary) FROM salaries AS s2 WHERE s2.emp_no <= s1.emp_no AND s2.to_date = '9999-01-01') AS running_...
2021-07-09
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