Question

这是我的查询无效

SELECT p.pID 
  FROM CommunityStoreProducts p  
  JOIN CommunityStoreProductAttributeValues pav 
    ON p.pID = pav.PID 
 WHERE (
      (pav.akID = 62) 
   AND (pav.avID = 12313)
      ) 
   AND (
      (pav.akID = 64) 
   AND (pav.avID = 12315)
     ) 
   AND (
      (pav.akID = 65) 
   AND (pav.avID = 12316)
      )

我还尝试过这样的查询：

SELECT p.pID FROM CommunityStoreProducts p INNER JOIN CommunityStoreProductAttributeValues pav ON p.pID = pav.PID WHERE (pav.akID = 62) AND (pav.avID = 12313)

SELECT p.pID FROM CommunityStoreProducts p INNER JOIN CommunityStoreProductAttributeValues pav ON p.pID = pav.PID WHERE (pav.akID = 64) AND (pav.avID = 12315)

SELECT p.pID FROM CommunityStoreProducts p INNER JOIN CommunityStoreProductAttributeValues pav ON p.pID = pav.PID WHERE (pav.akID = 65) AND (pav.avID = 12316)

所有3个查询都运行良好并返回值。当我们将这个3合1加入1个无法正常工作的查询时。

仅供参考：1件产品满足所有3个条件

第一个查询有什么问题吗？

感谢。

Answer 1

我没有看到有关此查询的任何语法错误，但它不会返回任何值。不能有akID同时等于62,64和65的记录。如果要返回所有此类记录，请使用OR运算符：

SELECT p.pID FROM CommunityStoreProducts p
   INNER JOIN CommunityStoreProductAttributeValues pav
      ON p.pID = pav.PID
      WHERE pav.akID = 62 AND pav.avID = 12313
         OR pav.akID = 64 AND pav.avID = 12315
         OR pav.akID = 65 AND pav.avID = 12316

Answer 2

如果必须使用多个“OR”，则可以用“IN”条件替换它们。

Answer 3

SELECT p.pID FROM CommunityStoreProducts p INNER JOIN 
CommunityStoreProductAttributeValues pav ON p.pID = pav.PID WHERE 
((pav.akID = 62) AND (pav.avID = 12313)) 
OR
((pav.akID = 64) AND (pav.avID = 12315)) 
OR 
((pav.akID = 65) AND (pav.avID = 12316))

每当您对具有多个条件的相同字段执行操作时，请使用OR而不是AND。

Answer 4

我正在使用非常复杂的产品过滤器，因此我无法使用＆＃34; IN＆＃34;或＆＃34;或＆＃34;运营商。现在我改变了这样的查询，它为我工作

SELECT p.pID FROM CommunityStoreProducts p 
INNER JOIN CommunityStoreProductAttributeValues pav620 ON p.pID = pav620.PID 
INNER JOIN CommunityStoreProductAttributeValues pav640 ON p.pID = pav640.PID
INNER JOIN CommunityStoreProductAttributeValues pav650 ON p.pID = pav650.PID
WHERE ((pav620.akID = 62) AND (pav620.avID = 12313))
AND ((pav640.akID = 64) AND (pav640.avID = 12315))
AND ((pav650.akID = 65) AND (pav650.avID = 12316))

我不知道它是否正确，但它对我有用。谢谢你的回复

PHP mysql查询无法使用多个＆＃34; AND＆＃34;运营商

4 个答案: