加入和条件

Question

我有以下(缩短查询):

SELECT 
    `Statistics`.`StatisticID`,
    COUNT(DISTINCT `Flags`.`FlagType`) AS `FlagCount`
FROM `Statistics`
LEFT JOIN `Flags` ON `Statistics`.`StatisticID` = `Flags`.`StatisticID`
WHERE `FlagCount` = 0
GROUP BY `Statistics`.`StatisticID`
ORDER BY `SubmittedTime` DESC
LIMIT 0, 10

现在,无论是FlagCount = 0或COUNT(Flags.FlagType)在工作中WHERE的条款.我想过使用a,SET但我不确定如何将其添加到查询中.有任何想法吗？

谢谢,

Answer 1

使用HAVING COUNT(DISTINCT Flags.FlagType) = 0.