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我有這個查詢奇怪的問題。當我按原樣運行時,我得到了一個結果集,但是當我以任何方式更改WHERE子句或甚至刪除它時,它完全消除了我的整個結果集。任何想法,爲什麼這可能是?這是一箇舊的,糟糕的供應商平臺,不幸的是,我無法擁有管理員訪問權限,所以我所能做的就是運行報告,而且只能運行報告。SQL Server - 刪除WHERE子句刪除結果集
SELECT
(CASE WHEN SUBSTRING(VO.AR090_REFERENCE, 1, 1) = 'X' THEN 'CLUB' WHEN LEFT(RIGHT(VO.AR090_REFERENCE, 5), 2) = 'IP' THEN 'IP' ELSE 'CAMP' END) AS TYPE,
CONVERT(NVARCHAR, VO.AR090_ISS_DATE, 101) AS SETUP,
VO.AR090_DESC AS FUNDER,
VO.AR090_REFERENCE AS VOUCH_NUM,
CHECKSUM(VO.AR090_REFERENCE) AS VOUCH_PARM,
CONVERT(NVARCHAR, VO.AR090_UPD_STAMP, 101) AS MODIFIED,
VO.AR090_AMT AS AMT,
VO.AR090_AMT_APPLIED AS USED,
VO.AR090_AMT - VO.AR090_AMT_APPLIED AS REMAIN
FROM AR090_VOUCHER VO
LEFT OUTER JOIN AR020_TRANSACTIONS AR2 ON VO.AR090_ORG_CODE = AR2.AR020_ORG_CODE AND VO.AR090_REFERENCE = AR2.AR020_CC_CHECK AND AR2.AR020_TRANS_TYPE = 'VCH'
LEFT OUTER JOIN ER100_ACCT_ORDER AO ON AO.ER100_ORG_CODE = AR2.AR020_ORG_CODE AND AO.ER100_ORD_NBR = AR2.AR020_ORD_NBR
WHERE
(VO.AR090_AMT - VO.AR090_AMT_APPLIED) > 0
GROUP BY
VO.AR090_ISS_DATE,
VO.AR090_REFERENCE,
VO.AR090_AMT,
VO.AR090_AMT_APPLIED,
CONVERT(NVARCHAR, VO.AR090_UPD_STAMP, 101),
AR2.AR020_TRANS_TYPE,
AR2.AR020_CC_CHECK ,
VO.AR090_DESC
ORDER BY
(CASE WHEN SUBSTRING(VO.AR090_REFERENCE, 1, 1) = 'X' THEN 'CLUB' WHEN LEFT(RIGHT(VO.AR090_REFERENCE, 5), 2) = 'IP' THEN 'IP' ELSE 'CAMP' END) DESC,
SUBSTRING(VO.AR090_DESC, 13, LEN(VO.AR090_DESC) - 12)
爲什麼GROUP BY? (我看不到任何聚合函數。) – jarlh
因爲他確實想殺死重複項;) – TomTom
我想知道是否有一些空值可能無意中忽略了where子句。 –