更新語句中具有選擇子查詢的嵌套SQL查詢

在執行此查詢時，我在WHERE子句附近出現錯誤。更新語句中具有選擇子查詢的嵌套SQL查詢

update AssetData set EmployeeName = ISNULL(EmployeeName,'') [email protected] 
where ([AssetNumber] like'%" + WA_number.Text + "%') 
and ID IN (SELECT ID FROM AssetData ORDER BY ID DESC 
where ([AssetNumber] like'%" + WA_number.Text + "%') LIMIT 1)

有人請幫我弄清楚這有什麼問題嗎？

來源

2014-12-31 PuRaK

的數據庫，你的工作嗎？ – th1rdey3

and ID IN (SELECT ID FROM AssetData ORDER BY ID DESC 
where ([AssetNumber] like'%" + WA_number.Text + "%') LIMIT 1)

的where應該在ORDER BY之前成爲。儘管合法，in (... limit 1)沒有意義，因爲in應與列表一起使用。我建議使用= max(ID)代替

and ID = (SELECT max(ID) FROM AssetData where [AssetNumber] like'%" + WA_number.Text + "%')

，你可以留下你的where子句的第一部分，因爲ID您一個WHERE的ORDER BY之前有同樣的標準已經

update AssetData set EmployeeName = ISNULL(EmployeeName,'') [email protected] 
where ID = (SELECT max(ID) FROM AssetData where [AssetNumber] like'%" + WA_number.Text + "%');

來源

2014-12-31 05:07:26 FuzzyTree

試試這個，如果你想根據ID選擇最新添加的行

UPDATE AssetData set EmployeeName = ISNULL(EmployeeName,'') [email protected] 
WHERE([AssetNumber] like'%" + WA_number.Text + "%') 
AND ID IN (SELECT MAX(ID) FROM AssetData 
where ([AssetNumber] like'%" + WA_number.Text + "%') LIMIT 1)

來源

2014-12-31 05:00:47 SanyTiger

錯誤 - 「ORDER BY子句在視圖，內聯函數，派生表，子查詢和公用表表達式中無效，除非還指定了TOP或FOR XML」 – PuRaK

沒錯，但我希望它選擇最後一個ID最新添加的行）從我的表中AssetData = ...這就是爲什麼我需要DESC – PuRaK

試試這個

我認爲你正在使用SQL Server

update AssetData set EmployeeName = ISNULL(EmployeeName,'') [email protected] 
where [AssetNumber] like'%" + WA_number.Text + "%' 
and ID IN (SELECT TOP 1 ID FROM AssetData 
where [AssetNumber] like'%" + WA_number.Text + "%' 
ORDER BY ID DESC)

來源

2014-12-31 05:04:03

匹配。此外，基於錯誤消息，很明顯你使用SQL Server，所以你需要TOP代替LIMIT：

update AssetData 
set EmployeeName = ISNULL(EmployeeName,'') [email protected] 
where ([AssetNumber] like'%" + WA_number.Text + "%') 
     and ID IN (SELECT TOP 1 ID 
        FROM AssetData 
        WHERE ([AssetNumber] like'%" + WA_number.Text + "%') 
        ORDER BY ID DESC 
        )

同樣，你可以選擇MAX()：

update AssetData 
set EmployeeName = ISNULL(EmployeeName,'') [email protected] 
where ([AssetNumber] like'%" + WA_number.Text + "%') 
     and ID IN (SELECT MAX(ID) 
        FROM AssetData 
        WHERE ([AssetNumber] like'%" + WA_number.Text + "%') 
        )

來源

2014-12-31 05:10:00

更新語句中具有選擇子查詢的嵌套SQL查詢

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