在MERGE sql server的ON搜索条件中合并两列

Question

我有两个日期列[START DATE]和[END DATE]，我只想插入其日期不在任一列中的记录。这是我的逻辑是这样的：

MERGE TABLE_A          AS Target 
USING (SELECT DISTINCT * FROM TABLE_B)    AS Source 
ON (SELECT Target.[START DATE] + Target.[END DATE] AS Target.[COMPAREDATE] = 
    SELECT Source.[START DATE] + Source.[END DATE] AS Source.[COMPAREDATE]) 
WHEN NOT MATCHED THEN 
INSERT ([DATE ADDED], [END DATE], ...) 
VALUES (Source.[DATE ADDED], Source.[END DATE], ...); 

我也尝试下面的代码，但它继续插入重复：

ON (Target.[START DATE] = Source.[START DATE] AND Target.[END DATE] = Source.[END DATE]) 

我会很感激任何帮助，谢谢！

Answer 1

此代码是接近：

ON (Target.[START DATE] = Source.[START DATE] AND Target.[END DATE] = Source.[END DATE]) 

它说，“如果这两个起始日期和结束日期的比赛，那么相匹配的行”。

如果你想说“如果任一StartDates匹配或EndDates匹配，则排比赛”，那么你应该这样做：

ON (Target.[START DATE] = Source.[START DATE] OR Target.[END DATE] = Source.[END DATE])