表 pcKeyword kwId | 关键词
表短语 kwId | 投票
表反短语 kwId | 投票
所以投票列是一个整数,我想为指定的关键字求和它是这样的:
示例关键字 | 12 | 47
直到现在我有这个但我不能正常工作:
SELECT pcKeyword.kwId, pcKeyword.keyword, SUM( proPhrase.vote ) AS proVotes, SUM( contraPhrase.vote ) AS contraVotes
FROM pcKeyword
INNER JOIN proPhrase ON proPhrase.kwId = pcKeyword.kwId
INNER JOIN contraPhrase ON contraPhrase.kwId = proPhrase.kwId
GROUP BY pcKeyword.keyword ORDER BY pcKeyword.keyword ASC