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[英]DB2 + C#: Getting a SQL0302N error when trying to store a Bigint value
[英]DB2 'SQL0901 SQL System Error.' when trying to SELECT from view containing UNION
我正在使用AS400 DB2數據庫。 在該數據庫中,我有3個視圖。
所有視圖具有完全相同的列名和數據類型。 視圖1和視圖2每個都包含一個Select語句,該語句在同一源表上具有聚合函數。 只是WHERE條件和集合函數有些不同。
視圖3只是視圖1和視圖2上的UNION SELECT合並結果。
所以這是我的問題。
SELECT 2 AS CLIENT, COLUMN1, COLUMN2, COLUMN3, COLUMN4, VALUE
FROM SOME_DATABASE.VIEW3
WHERE COLUMN1 = @COLUMN1 AND COLUMN2 = @COLUMN2 ORDER BY COLUMN3
我可以在VIEW 1和2上的c#程序中執行參數化的SELECT語句(如上面的語句),而不會出現問題,但是當我嘗試在VIEW 3上使用參數化的SELECT時,出現“ SQL0901 SQL系統錯誤”。 但是,當我不使用參數時,它就可以正常工作。
誰能向我解釋這種行為?
AS400 DB2版本為v5r2m0。該程序在VS 2012中的.NET 4.0中使用c#編寫,使用“ IBM.Data.DB2.iSeries.dll”訪問數據庫
定義視圖1:
SELECT COLUMN1,
COLUMN2,
COLUMN3,
COLUMN4,
SUM(CAST((TRIM(SUBSTR(COLUMN5,104,1))||TRIM(SUBSTR(COLUMN5,94,3))||TRIM(SUBSTR(COLUMN5,98,3))||'.'||TRIM(SUBSTR(COLUMN5,102,2))) AS DECIMAL(10,2))) AS VALUE
FROM SOME_DATABASE.SOME_TABLE
WHERE TRIM(SUBSTR(COLUMN5,105,3)) <> ''
AND SUBSTR(COLUMN5,103,5) <> ' EUR'
AND COLUMN4 IN (' $NEHHZ','$NEHHZVE','$NEHWMVE',' $NEHWW','$NEHWWVE','$NEHWWSK',' $NEHKW1',' $NEHKW2',' $NEHSK1',' $NEHSK2',' $NEHNV',' $NEHKZ1',' $NEHLZ1',' $NEHSZ1')
GROUP BY COLUMN1,
COLUMN2,
COLUMN3,
COLUMN4
定義視圖2:
SELECT COLUMN1,
COLUMN2,
COLUMN3,
COLUMN4,
SUM(CAST(TRIM(SUBSTR(COLUMN5,109,1))||TRANSLATE(TRIM(SUBSTR(COLUMN5,99,10)),'.',',') AS DECIMAL(10,2))) AS VALUE
FROM SOME_DATABASE.SOME_TABLE
WHERE COLUMN6 != 0
AND COLUMN4 IN (' SUM$HKV',' SUM$KWZ',' SUM$KZ',' SUM$LZ',' SUM$SZ',' SUM$WMZ',' SUM$WWZ')
GROUP BY COLUMN1,
COLUMN2,
COLUMN3,
COLUMN4
定義視圖3:
SELECT COLUMN1, COLUMN2, COLUMN3, COLUMN4, VALUE
FROM SOME_DATABASE.VIEW1
UNION
SELECT COLUMN1, COLUMN2, COLUMN3, COLUMN4, VALUE
FROM SOME_DATABASE.VIEW2
似乎視圖上的視圖不支持參數化的SELECT語句。 我只是用包含視圖1 UNION視圖2的定義的語句替換了第三視圖,例如:
SELECT COLUMN1, COLUMN2, COLUMN3, COLUMN4, SUM(CAST((TRIM(SUBSTR(COLUMN5,104,1))||TRIM(SUBSTR(COLUMN5,94,3))||TRIM(SUBSTR(COLUMN5,98,3))||'.'||TRIM(SUBSTR(COLUMN5,102,2))) AS DECIMAL(10,2))) AS VALUE FROM SOME_DATABASE.SOME_TABLE WHERE TRIM(SUBSTR(COLUMN5,105,3)) <> '' AND SUBSTR(COLUMN5,103,5) <> ' EUR' AND COLUMN4 IN (' $NEHHZ','$NEHHZVE','$NEHWMVE',' $NEHWW','$NEHWWVE','$NEHWWSK',' $NEHKW1',' $NEHKW2',' $NEHSK1',' $NEHSK2',' $NEHNV',' $NEHKZ1',' $NEHLZ1',' $NEHSZ1') GROUP BY COLUMN1, COLUMN2, COLUMN3, COLUMN4 UNION SELECT COLUMN1, COLUMN2, COLUMN3, COLUMN4, SUM(CAST(TRIM(SUBSTR(COLUMN5,109,1))||TRANSLATE(TRIM(SUBSTR(COLUMN5,99,10)),'.',',') AS DECIMAL(10,2))) AS VALUE FROM SOME_DATABASE.SOME_TABLE WHERE COLUMN6 != 0 AND COLUMN4 IN (' SUM$HKV',' SUM$KWZ',' SUM$KZ',' SUM$LZ',' SUM$SZ',' SUM$WMZ',' SUM$WWZ') GROUP BY COLUMN1, COLUMN2, COLUMN3, COLUMN4
現在,它可以完美運行。 但我仍然不明白為什么會發生此錯誤。
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