超过5本.sql
来自「1.写出建立BORROW表的SQL语句」· SQL 代码 · 共 5 行
SQL
5 行
SELECT BORROW.CNO,QUANTITY FROM BOOKS,BORROW
WHERE BOOKS.BNO=BORROW.BNO AND BORROW.CNO IN
(SELECT DISTINCT CNO FROM BORROW
GROUP BY CNO
HAVING COUNT(*)>5)
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