Question

我试图将NOT IN查询转换为NOT EXISTS。但是，不存在并不能回报我的期望......我做错了什么？

不在查询中：

SELECT BLC.LABEL_COLECCTIONS_ID 
FROM BET_LABELS BL,
BET_LABEL_SEASONS BLS,
BET_LABEL_COLLECTIONS BLC
WHERE BLC.LABEL_ID    = BL.LABEL_ID 
AND BL.LABEL_ID       = BLS.LABEL_ID 
AND BLC.COLLECTION_ID = 6470 
AND BLS.SEASON_ID     = 71
AND NOT EXISTS (       
                 SELECT GP.LABEL_COLECCTIONS_ID 
                 FROM GPE_PRICES GP,
                 GPE_COLLECTION_ASSIGNEMENTS GCA
                 WHERE GP.COLLECTION_ASSIGNEMENT_ID =    GCA.COLLECTION_ASSIGNEMENT_ID
                 AND GCA.COLLECTION_ASSIGNEMENT_ID  = 101591665
                 AND GCA.SEASON_ID                  = 71
              );

不存在：

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任何建议将不胜感激。

Answer 1

您需要在条件

中包含LABEL_COLECCTIONS_ID

SELECT BLC.LABEL_COLECCTIONS_ID 
FROM BET_LABELS BL,
BET_LABEL_SEASONS BLS,
BET_LABEL_COLLECTIONS BLC
WHERE BLC.LABEL_ID    = BL.LABEL_ID 
AND BL.LABEL_ID       = BLS.LABEL_ID 
AND BLC.COLLECTION_ID = 6470 
AND BLS.SEASON_ID     = 71
AND NOT EXISTS (       
                 SELECT * 
                 FROM GPE_PRICES GP,
                 GPE_COLLECTION_ASSIGNEMENTS GCA
                 WHERE GP.COLLECTION_ASSIGNEMENT_ID =    GCA.COLLECTION_ASSIGNEMENT_ID
                 AND GCA.COLLECTION_ASSIGNEMENT_ID  = 101591665
                 AND GCA.SEASON_ID                  = 71
                 and GP.LABEL_COLECCTIONS_ID=blc.label_colecctions_id 
              );

将NOT IN转换为NOT EXISTS不会返回相同的内容

1 个答案: