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在C＃中的FROM子句中的语法错误（MS Access）

分类: 技术问答 • 2025-09-05 09:47:10
问题描述：

我在从子句中访问数据时从MS Access数据库中的语法错误但如果我在访问中运行相同的查询我得到所需的结果没有任何错误。在C＃中的FROM子句中的语法错误（MS Access）

任何帮助表示赞赏。 这是我的代码

string strQuery = string.Empty ; 


      strQuery = "SELECT TUCLRII.LUSID,TUCLRII.UserID,TUCLRII.LastName,TUCLRII.FirstName,TUCLRII.MI,TUCLRII.Sex,TUCLRII.WhichEye,TUCLRII.Memo1,TUCLRII.Memo2,TUCLRII.CreationDT, TUCLRII.LastModifiedDT,TUCLRII.CardID,TUCLRI.UCID,TUCLRII.WiegandData,TUCLRII.LIrisCodeID,TUCLRII.LWhichEye,TUCLRII.LIrisCode,TUCLRII.RIrisCodeID,TUCLRII.RWhichEye,TUCLRII.RIrisCode,TUCLRII.LIrisImage,TUCLRII.LImageFormat,TUCLRII.LImageSize,TUCLRII.LWhichEye,TUCLRII.RIrisImage,TUCLRII.RImageFormat,TUCLRII.RImageSize,TUCLRII.RWhichEye,TIM.ImageFormat,TIM.ImageSize,TIM.FaceImage,TIM.PictureTakenDT"; 
      strQuery += " FROM (SELECT TUCLRI.LUSID,TUCLRI.UUID,TUCLRI.UserID,TUCLRI.LastName,TUCLRI.FirstName,TUCLRI.MI,TUCLRI.Sex,TUCLRI.WhichEye,TUCLRI.Memo1,TUCLRI.Memo2,TUCLRI.CreationDT,TUCLRI.LastModifiedDT, TUCLRI.CardID, TUCLRI.UCID, TUCLRI.WiegandData, TUCLRI.LIrisCodeID ,TUCLRI.LWhichEye,TUCLRI.LIrisCode,TUCLRI.RIrisCodeID,TUCLRI.RWhichEye,TUCLRI.RIrisCode,TUCLRI.LIrisImage,TUCLRI.LImageFormat,TUCLRI.LImageSize,TUCLRI.LWhichEye,TRIM.IrisImage as RIrisImage,TRIM.ImageFormat as RImageFormat, TRIM.ImageSize as RImageSize, TRIM.WhichEye as RWhichEye";     
      strQuery += " FROM (SELECT TUCLR.LUSID,TUCLR.UUID,TUCLR.UserID,TUCLR.LastName,TUCLR.FirstName,TUCLR.MI,TUCLR.Sex,TUCLR.WhichEye,TUCLR.Memo1,TUCLR.Memo2,TUCLR.CreationDT,TUCLR.LastModifiedDT,TUCLR.CardID,TUCLR.UCID,TUCLR.WiegandData,TUCLR.LIrisCodeID,TUCLR.LWhichEye,TUCLR.LIrisCode,TUCLR.RIrisCodeID,TUCLR.RWhichEye,TUCLR.RIrisCode,TLIM.IrisImage as LIrisImage,TLIM.ImageFormat as LimageFormat,TLIM.ImageSize as LImageSize,TLIM.WhichEye as LWhichEye"; 
      strQuery += " FROM (SELECT TUCI.LUSID,TUCI.UUID,TUCI.UserID,TUCI.LastName,TUCI.FirstName,TUCI.MI,TUCI.Sex,TUCI.WhichEye,TUCI.Memo1,TUCI.Memo2,TUCI.CreationDT,TUCI.LastModifiedDT,TUCI.CardID,TUCI.UCID,TUCI.WiegandData, TUCI.LIrisCodeID,TUCI.LWhichEye,TUCI.LIrisCode,TRI.IrisCodeID as RIrisCodeID,TRI.WhichEye as RWhichEye,TRI.IrisCode as RIrisCode"; 
      strQuery += " FROM (SELECT TUC.LUSID,TUC.UUID,TUC.UserID,TUC.LastName,TUC.FirstName,TUC.MI,TUC.Sex,TUC.WhichEye,TUC.Memo1,TUC.Memo2,TUC.CreationDT,TUC.LastModifiedDT,TUC.CardID,TUC.UCID,TUC.WiegandData,TLI.IrisCodeID as LIrisCodeID,TLI.WhichEye as LWhichEye,TLI.IrisCode as LIrisCode"; 
      strQuery += " FROM (SELECT TU.LUSID,TU.UUID,TU.UserID,TU.LastName,TU.FirstName,TU.MI,TU.Sex,TU.WhichEye,TU.Memo1,TU.Memo2,TU.CreationDT,TU.LastModifiedDT,TC.CardID,TC.UCID,TC.WiegandData FROM UserInfo TU left join CardInfo TC on (TU.UUID=TC.UUID and TU.LUSID = 0)) TUC LEFT JOIN IrisCodeInfo TLI ON(TUC.UUID = TLI.UUID and TLI.WhichEye=1))TUCI LEFT JOIN IrisCodeInfo TRI ON(TUCI.UUID = TRI.UUID and TRI.WhichEye=2))TUCLR LEFT JOIN IrisImageInfo TLIM ON(TUCLR.UUID = TLIM.UUID and TLIM.WhichEye=1))TUCLRI LEFT JOIN IrisImageInfo TRIM ON(TUCLRI.UUID = TRIM.UUID and TRIM.WhichEye=2))TUCLRII LEFT JOIN FaceImageInfo TIM ON(TUCLRII.UUID = TIM.UUID)";
+1

多个FROM子句？ – 2011-05-17 06:41:38

+0

@ Will A：是的...... – user662285 2011-05-17 06:55:23

答

你错过了在JOIN子句括号周围的一些空间。不过，我不确定这是否是问题。

答

我把你的字符串陈述，放入Instant SQL Formatter

，并得到这个

SELECT tuclrii.lusid, 
     tuclrii.userid, 
     tuclrii.lastname, 
     tuclrii.firstname, 
     tuclrii.mi, 
     tuclrii.sex, 
     tuclrii.whicheye, 
     tuclrii.memo1, 
     tuclrii.memo2, 
     tuclrii.creationdt, 
     tuclrii.lastmodifieddt, 
     tuclrii.cardid, 
     tuclri.ucid, 
     tuclrii.wieganddata, 
     tuclrii.liriscodeid, 
     tuclrii.lwhicheye, 
     tuclrii.liriscode, 
     tuclrii.ririscodeid, 
     tuclrii.rwhicheye, 
     tuclrii.ririscode, 
     tuclrii.lirisimage, 
     tuclrii.limageformat, 
     tuclrii.limagesize, 
     tuclrii.lwhicheye, 
     tuclrii.ririsimage, 
     tuclrii.rimageformat, 
     tuclrii.rimagesize, 
     tuclrii.rwhicheye, 
     tim.imageformat, 
     tim.imagesize, 
     tim.faceimage, 
     tim.picturetakendt 
FROM (SELECT tuclri.lusid, 
       tuclri.uuid, 
       tuclri.userid, 
       tuclri.lastname, 
       tuclri.firstname, 
       tuclri.mi, 
       tuclri.sex, 
       tuclri.whicheye, 
       tuclri.memo1, 
       tuclri.memo2, 
       tuclri.creationdt, 
       tuclri.lastmodifieddt, 
       tuclri.cardid, 
       tuclri.ucid, 
       tuclri.wieganddata, 
       tuclri.liriscodeid, 
       tuclri.lwhicheye, 
       tuclri.liriscode, 
       tuclri.ririscodeid, 
       tuclri.rwhicheye, 
       tuclri.ririscode, 
       tuclri.lirisimage, 
       tuclri.limageformat, 
       tuclri.limagesize, 
       tuclri.lwhicheye, 
       TRIM.irisimage AS ririsimage, 
       TRIM.imageformat AS rimageformat, 
       TRIM.imagesize AS rimagesize, 
       TRIM.whicheye AS rwhicheye 
     FROM (SELECT tuclr.lusid, 
         tuclr.uuid, 
         tuclr.userid, 
         tuclr.lastname, 
         tuclr.firstname, 
         tuclr.mi, 
         tuclr.sex, 
         tuclr.whicheye, 
         tuclr.memo1, 
         tuclr.memo2, 
         tuclr.creationdt, 
         tuclr.lastmodifieddt, 
         tuclr.cardid, 
         tuclr.ucid, 
         tuclr.wieganddata, 
         tuclr.liriscodeid, 
         tuclr.lwhicheye, 
         tuclr.liriscode, 
         tuclr.ririscodeid, 
         tuclr.rwhicheye, 
         tuclr.ririscode, 
         tlim.irisimage AS lirisimage, 
         tlim.imageformat AS limageformat, 
         tlim.imagesize AS limagesize, 
         tlim.whicheye AS lwhicheye 
       FROM (SELECT tuci.lusid, 
           tuci.uuid, 
           tuci.userid, 
           tuci.lastname, 
           tuci.firstname, 
           tuci.mi, 
           tuci.sex, 
           tuci.whicheye, 
           tuci.memo1, 
           tuci.memo2, 
           tuci.creationdt, 
           tuci.lastmodifieddt, 
           tuci.cardid, 
           tuci.ucid, 
           tuci.wieganddata, 
           tuci.liriscodeid, 
           tuci.lwhicheye, 
           tuci.liriscode, 
           tri.iriscodeid AS ririscodeid, 
           tri.whicheye AS rwhicheye, 
           tri.iriscode AS ririscode 
         FROM (SELECT tuc.lusid, 
             tuc.uuid, 
             tuc.userid, 
             tuc.lastname, 
             tuc.firstname, 
             tuc.mi, 
             tuc.sex, 
             tuc.whicheye, 
             tuc.memo1, 
             tuc.memo2, 
             tuc.creationdt, 
             tuc.lastmodifieddt, 
             tuc.cardid, 
             tuc.ucid, 
             tuc.wieganddata, 
             tli.iriscodeid AS liriscodeid, 
             tli.whicheye AS lwhicheye, 
             tli.iriscode AS liriscode 
           FROM (SELECT tu.lusid, 
               tu.uuid, 
               tu.userid, 
               tu.lastname, 
               tu.firstname, 
               tu.mi, 
               tu.sex, 
               tu.whicheye, 
               tu.memo1, 
               tu.memo2, 
               tu.creationdt, 
               tu.lastmodifieddt, 
               tc.cardid, 
               tc.ucid, 
               tc.wieganddata 
             FROM userinfo tu 
               LEFT JOIN cardinfo tc 
               ON (tu.uuid = tc.uuid 
                 AND tu.lusid = 0)) tuc 
             LEFT JOIN iriscodeinfo tli 
             ON(tuc.uuid = tli.uuid 
              AND tli.whicheye = 1))tuci 
           LEFT JOIN iriscodeinfo tri 
           ON(tuci.uuid = tri.uuid 
            AND tri.whicheye = 2))tuclr 
         LEFT JOIN irisimageinfo tlim 
         ON(tuclr.uuid = tlim.uuid 
          AND tlim.whicheye = 1))tuclri 
       LEFT JOIN irisimageinfo TRIM 
       ON(tuclri.uuid = TRIM.uuid 
        AND TRIM.whicheye = 2))tuclrii 
     LEFT JOIN faceimageinfo tim 
     ON(tuclrii.uuid = tim.uuid)

这样看来，你创造了每加入一个内嵌视图。

句法上看起来很好，但也许Access不喜欢它。当你可以使用标准连接时，它是一种非常低效的加入方式

SELECT tu.lusid, 
     tu.userid, 
     tu.lastname, 
     tu.firstname, 
     tu.mi, 
     tu.sex, 
     tu.whicheye, 
     tu.memo1, 
     tu.memo2, 
     tu.creationdt, 
     tu.lastmodifieddt, 
     tc.cardid, 
     tc.ucid, 
     tc.wieganddata, 
     tli.iriscodeid AS liriscodeid, 
     tli.whicheye AS lwhicheye, 
     tli.iriscode AS liriscode 
     tri.iriscodeid AS ririscodeid, 
     tri.whicheye AS rwhicheye, 
     tri.iriscode AS ririscode, 
     tlim.irisimage AS lirisimage, 
     tlim.imageformat AS limageformat, 
     tlim.imagesize AS limagesize, 
     tlim.whicheye AS lwhicheye 
     TRIM.irisimage AS ririsimage, 
     TRIM.imageformat AS rimageformat, 
     TRIM.imagesize AS rimagesize, 
     TRIM.whicheye AS rwhicheye 
     tim.imageformat, 
     tim.imagesize, 
     tim.faceimage, 
     tim.picturetakendt 
FROM 
    userinfo tu 
    LEFT JOIN cardinfo tc 
    ON (tu.uuid = tc.uuid 
     AND tu.lusid = 0) 
    LEFT JOIN iriscodeinfo tli 
    ON(tu.uuid = tli.uuid 
     AND tli.whicheye = 1) 
    LEFT JOIN iriscodeinfo tri 
    ON(tu.uuid = tri.uuid 
     AND tri.whicheye = 2) 
    LEFT JOIN irisimageinfo tlim 
     ON(tli.uuid = tlim.uuid 
     AND tlim.whicheye = 1) 
    LEFT JOIN irisimageinfo TRIM 
      ON(tri.uuid = TRIM.uuid 
       AND TRIM.whicheye = 2) 
     LEFT JOIN faceimageinfo tim 
     ON(tu.uuid = tim.uuid)

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