Sql 我的查询没有给出任何结果

有什么问题吗

我从每个select查询中得到正确的结果，所以我将所有查询放在一起

但是综合起来，ms access并没有给出结果

从技术上讲，它仍在努力完成这个查询

你能给我一些建议吗

SELECT a.* FROM (SELECT t.* FROM MyTable AS t WHERE t.ID not In (SELECT TOP 8 id FROM (SELECT * FROM MyTable WHERE subject = "Math" Or subject ="Science") WHERE StudentID = t.StudentID ORDER BY TestScore asc, id asc) AS a WHERE a.ID In (SELECT TOP 4 id FROM (SELECT tt.* FROM MyTable AS tt WHERE tt.ID not In (SELECT TOP 8 id FROM (SELECT * FROM MyTable WHERE subject = "Math" Or subject ="Science") WHERE StudentID = t.StudentID ORDER BY TestScore asc, id asc) AS b WHERE b.StudentID = a.StudentID ORDER BY b.TestScore asc, b.id asc);

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您是否尝试过一次添加一个查询？排除这个问题？分解问题并从那里解决问题要容易得多