如何在Sqlplus Oracle中对结果进行分组
我想显示书名、名字以及副本数量。当我运行该查询时,它会给出一个错误消息“to group”。但当我分组时,它并不是对分组的一种表达。有人能帮我吗如何在Sqlplus Oracle中对结果进行分组,sql,group-by,oracle11g,Sql,Group By,Oracle11g,我想显示书名、名字以及副本数量。当我运行该查询时,它会给出一个错误消息“to group”。但当我分组时,它并不是对分组的一种表达。有人能帮我吗 SELECT bk.BookTitle, au.FirstName, COUNT(bkc.BookCopyID), rb.ReservedDate FROM Book bk, Book_Author ba, BookCopy bkc, ReserveBook rb, Author au WHERE bkc.BookID = bk.Book
SELECT bk.BookTitle, au.FirstName, COUNT(bkc.BookCopyID), rb.ReservedDate
FROM Book bk, Book_Author ba, BookCopy bkc, ReserveBook rb, Author au
WHERE
bkc.BookID = bk.BookID
AND ba.BookID = bkc.BookID
AND ba.AuthorID = au.AuthorID
AND bkc.BookCopyID = rb.BookCopyID
AND rb.ReservedDate >= trunc(trunc(sysdate,'MON')-1,'MON')
AND rb.ReservedDate < trunc(sysdate,'MON')
GROUP BY bkc.BookCopyID;
选择bk.BookTitle、au.FirstName、COUNT(bkc.BookCopyID)、rb.ReservedDate
来自bk图书,图书作者ba,图书副本bkc,ReserveBook rb,作者au
哪里
bkc.BookID=bk.BookID
和ba.BookID=bkc.BookID
ba.AuthorID=au.AuthorID
并且bkc.BookCopyID=rb.BookCopyID
和rb.ReservedDate>=trunc(trunc(sysdate,'MON')-1,'MON'))
和rb.ReservedDate
删除您的分组依据
语句并添加该语句
Group by bk.BookTitle,au.FirstName,rb.ReservedDate
假设你所有的where条件都是正确的,并且你知道你在做什么。有人会编辑这篇文章吗?