Question

我有这个SQL查询：

SELECT `CARD_ID`, `CARD_NAME`, `CARD_SET`,`CARD_COLOR` 
FROM (`All_Cards_Ext`)
WHERE (`CARD_NAME` LIKE '%hearts%' AND `CARD_COLOR` LIKE '%R%)
GROUP BY `CARD_NAME`LIMIT 9;

这个正常回归给我

--------------------------------------
51| Ace of Hearts | Bridge | R 
52| Jack of Hearts| Bridge | R

但是，下面的查询不会：

SELECT `CARD_ID`, `CARD_NAME`, `CARD_SET`,`CARD_COLOR`
FROM (`All_Cards_Ext`) 
WHERE (`CARD_NAME` LIKE 'hearts%' AND `CARD_COLOR` LIKE '%R%' OR `CARD_COLOR` LIKE '%B%' )GROUP BY `CARD_NAME`LIMIT 9;

这个不起作用它会返回随机记录，它似乎是OR正常工作后的标准：

-------------------------------------- 34| Ace of Diamonds | Bridge | D 35| Two of Diamonds | Bridge | D

...

Answer 1

WHERE (`CARD_NAME` LIKE 'hearts%' AND `CARD_COLOR` LIKE '%R%' OR `CARD_COLOR` LIKE '%B%' )GROUP BY `CARD_NAME`LIMIT 9;

应该是

WHERE (`CARD_NAME` LIKE 'hearts%' AND (`CARD_COLOR` LIKE '%R%' OR `CARD_COLOR` LIKE '%B%' )GROUP BY `CARD_NAME`LIMIT 9;

简单示例See Example

Answer 2

您需要将您的OR条件分组为some and (someother or someother or someother )

SELECT `CARD_ID`, `CARD_NAME`, `CARD_SET`,`CARD_COLOR`
FROM (`All_Cards_Ext`) 
WHERE `CARD_NAME` LIKE 'hearts%' AND 
(`CARD_COLOR` LIKE '%R%' OR `CARD_COLOR` LIKE '%B%' )
GROUP BY `CARD_NAME`LIMIT 9;

Answer 3

请注意您在哪里使用括号＆＃39;：

...
WHERE (`CARD_NAME` LIKE 'hearts%' AND (`CARD_COLOR` LIKE '%R%' OR `CARD_COLOR` LIKE '%B%'))
...

Answer 4

为什么不用这个并摆脱OR ......

  AND `CARD_COLOR` in ( 'R' ,'B' )

而不是

  AND `CARD_COLOR` LIKE '%R%' OR `CARD_COLOR` LIKE '%B%'

像那样：

 WHERE `CARD_NAME` LIKE 'hearts%' AND `CARD_COLOR` in ( 'R' ,'B' )

Answer 5

我相信你在颜色比较中缺少括号（CARD_NAME LIKE＆＃39; hearts％＆＃39; AND（CARD_COLOR LIKE＆＃39;％R％＆＃39;或CARD_COLOR LIKE＆＃39;％B％＆＃39;）

SQL查询与OR不匹配

5 个答案: