SQL 合并语法

Question

有没有更简洁的方法来编写这个查询？

MERGE INTO TARGET_TABLE AS t
USING SOURCE_TABLE AS s
    ON t.LOCAL_ID = s.LOCAL_ID
WHEN MATCHED
    AND (
        t.[col1] <> s.[col1]
        OR t.[col2] <> s.[col2]
        OR t.[col5] <> s.[col5]
        OR t.[col6] <> s.[col6]
        OR t.[col8] <> s.[col8]
        OR t.[col13] <> s.[col13]
        OR t.[col15] <> s.[col15]
        )
    THEN
        UPDATE
        SET [col1] = s.[col1]
            ,[col2] = s.[col2]
            ,[col5] = s.[col5]
            ,[col6] = s.[col6]
            ,[col8] = s.[col8]
            ,[col13] = s.[col13]
            ,[col15] = s.[col15]
WHEN NOT MATCHED BY TARGET
    THEN
        INSERT (
            [LOCAL_ID]
            ,[col1]
            ,[col2]
            ,[col5]
            ,[col6]
            ,[col8]
            ,[col13]
            ,[col15]
            )
        VALUES (
            ,s.[LOCAL_ID]
            ,[col1]
            ,[col2]
            ,[col5]
            ,[col6]
            ,[col8]
            ,[col13]
            ,[col15]
            )
WHEN NOT MATCHED BY SOURCE
    THEN
        DELETE
OUTPUT GetDate()
    ,s.LOCAL_ID
    ,$ACTION
    ,deleted.[col1] col1
    ,deleted.[col2] col2
    ,deleted.[col5] col5
    ,deleted.[col6] col6
    ,deleted.[col8] col8
    ,deleted.[col13] col13
    ,deleted.[col15] col15
    ,inserted.[col1] NEW_col1
    ,inserted.[col2] NEW_col2
    ,inserted.[col5] NEW_col5
    ,inserted.[col6] NEW_col6
    ,inserted.[col8] NEW_col8
    ,inserted.[col13] NEW_col13
    ,inserted.[col15] NEW_col15
INTO [AUDIT];

这些列是两个表的子集，所以我认为通配符对我没有多大帮助。

但是，两个表的字段名称相同。 AUDIT 可以包含 deleted.* 和 inserted.* 在专门采摘列内

Answer 1

这是最好的。当然，您可以使用动态 SQL。