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當我沒有右側的時候,我在列StatusOfDeduplication上得到了NULL,而是5.大小寫和狀態有問題
這個查詢有什麼問題?
select c.Code AS Code, c.DefaultName AS Name, c.Status AS Status,
case cp.TargetCodeStatus when Null then 5 else cp.TargetCodeStatus end as StatusOfDeduplication from Cities c LEFT JOIN CityPackages cp ON cp.TargetCode = c.Code
太好了,謝謝! – user278618 2010-09-08 14:26:18