什么是最好的(低资源和速度)?
SELECT C.[col1]
, D.[col2]
FROM tbl1 C,
tbl2 D
WHERE C.[colid] = D.[colid]
或者
SELECT [tbl1].[col1], [tbl2].[col2]
FROM [tbl1] INNER JOIN [tbl2] ON
[tbl1].[colid] = [tbl2].[colid]
谢谢!
更新
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