这是输出的一部分
array(7) { ["type"]=> string(16) "new post comment" ["book_id"]=> string(1) "1" ["name"]=> string(9) "whatever" [ "author_id"]=> string(4) "test" ["content"]=> string(19) "2011-07-16 03:20:01" ["create_time"]=> string(1) "3" ["id"]=> 字符串(1) "1" }
这是我查询的一部分
SELECT 'bookcomment' AS type
,b.book_id
,b.name
,c.book_id
,c.author_id
,c.content
,c.create_time AS create_time
,u.id
,u.name
FROM tbl_book AS b,
tbl_book_comment AS c,
tbl_user AS u
WHERE u.id=c.author_id in (1,2) AND b.book_id=c.book_id
UNION ALL
SELECT 'new post comment' AS type
,po.post_id
,po.title
,pc.author_id
,pc.content
,pc.create_time AS create_time
,pc.post_id
,u.id
,u.name
FROM tbl_post as po,
tbl_post_comment as pc,
tbl_user as u
WHERE u.id=pc.author_id in(1,2) AND po.post_id=pc.post_id
UNION ALL
SELECT 'bookrating' AS type
,b.book_id as one
,b.name
,ra.book_id
,ra.user_id
,ra.rating
,ra.create_time AS create_time
,u.id
,u.name
FROM tbl_book AS b,
tbl_user_book_rating AS ra,
tbl_user AS u
WHERE u.id=ra.user_id in (1,2) AND b.book_id=ra.book_id
UNION ALL...
ORDER BY create_time DESC
结果显示,“author_id”对应的数据应该对应“content”,“content”应该是“create_time”。我的查询有什么问题?