发布网友 发布时间:2022-04-23 23:54
共2个回答
热心网友 时间:2022-04-09 19:46
SELECT
*
FROM
student
WHERE
EXISTS (
SELECT 1
FROM takes
WHERE takes.ID = student.ID AND takes.course_id = 'CS_101'
)
AND
EXISTS (
SELECT 1
FROM takes
WHERE takes.ID = student.ID AND takes.course_id = 'CS_190'
)
热心网友 时间:2022-04-09 21:04
表二结构呢?