SQL 字符串附近的 OpenQuery 语法不正确

Question

我正在尝试运行存储过程中的以下查询。当我尝试使用硬编码值而不是变量运行它时，它运行没问题。但是就在我尝试将整个查询包含在一个变量中并执行它时，它给我一个错误提示：Incorrect syntax near 'FIFO'.

我尝试用双引号替换单引号，但没有用。请帮忙！

DECLARE @TSQL nvarchar(max); Declare @STATION_CODE varchar(max); Declare @STATION_CODE_PREV varchar(max);

SET @STATION_CODE='1600020'; SET @STATION_CODE_PREV='1600007'; SET @TSQL='SELECT * FROM OPENQUERY (VFDB,''SELECT COUNT(TABLE_7.FIFO) AS FIFO_COUNT,TABLE_7.FIFO,TABLE_7.Day_Hour ,TABLE_7.Station_Code,''FIFO'' AS Element FROM  ( select CAST(CASE WHEN TABLE_6 .BCD_PRV2_EXIT=TABLE_5 .BCD_PRV2 THEN ''1'' ELSE ''0'' END AS INT) FIFO,    case when datepart(hour,TABLE_6.CREATION_DATE_E3 )<10 
      then
    ''0''
      +Right (Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'':00 - ''+''0''
      +Right(Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'':59'' 
        else

       Right (Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'':00 - ''
      +Right(Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'':59''

      end As Day_Hour ,TABLE_6.Station_Code As Station_Code  from

        (           select T1_ENTRY.RANK1_ENTRY AS T5_R1, T1_ENTRY.BCD_PRV1,T1_ENTRY.CREATION_DATE_E1,T2_ENTRY.RANK2_ENTRY , T2_ENTRY.BCD_PRV2 ,T2_ENTRY.CREATION_DATE_E2           from 
                (
                select MFG_UNIT_NUM as BCD_PRV1,CREATION_DATE AS CREATION_DATE_E1 ,ROW_NUMBER()over(order by Creation_Date) as RANK1_ENTRY
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115, ''REFRIGERATOR'', NULL, '''''+ @STATION_CODE +''''', NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL 
                ) T1_ENTRY          LEFT JOIN   
                (
                select MFG_UNIT_NUM as BCD_PRV2,CREATION_DATE AS CREATION_DATE_E2,ROW_NUMBER()over(order by Creation_Date) as RANK2_ENTRY
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115, ''REFRIGERATOR'', NULL, '''''+ @STATION_CODE_PREV +''''', NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL 
                ) T2_ENTRY          ON T1_ENTRY.RANK1_ENTRY=T2_ENTRY.RANK2_ENTRY-1
        ) TABLE_5

LEFT JOIN 

        (       select T3_EXIT.RANK1_EXIT AS T6_R1, T3_EXIT.BCD_PRV1_EXIT,T3_EXIT.CREATION_DATE_E3,T4_EXIT.RANK2_EXIT , T4_EXIT.BCD_PRV2_EXIT ,T4_EXIT.CREATION_DATE_E4,T3_EXIT.Station_Code            from 
                (
                select MFG_UNIT_NUM as BCD_PRV1_EXIT,CREATION_DATE AS CREATION_DATE_E3 ,ROW_NUMBER()over(order by Creation_Date) as RANK1_EXIT,STATION_CODE as STATION_CODE 
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115,''REFRIGERATOR'', NULL, '''+@STATION_CODE+''',NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL
                ) T3_EXIT           LEFT JOIN   
                (
                select MFG_UNIT_NUM as BCD_PRV2_EXIT,CREATION_DATE AS CREATION_DATE_E4,ROW_NUMBER()over(order by Creation_Date) as RANK2_EXIT,STATION_CODE as STATION_CODE 
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115,''REFRIGERATOR'', NULL,'''+@STATION_CODE_PREV+''', NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL
                        ) T4_EXIT           ON T3_EXIT.RANK1_EXIT=T4_EXIT.RANK2_EXIT-1       ) TABLE_6 ON TABLE_5.BCD_PRV2=TABLE_6.BCD_PRV2_EXIT   )TABLE_7 GROUP BY  TABLE_7.FIFO,TABLE_7.Day_Hour ,Table_7. STATION_CODE'')';

EXEC sp_executesql @TSQL;

Answer 1

假设您有一些带有字符串的动态 SQL：

'SELECT * FROM foo WHERE bar = ''i am a string'';'
--                             ^^             ^^
--                             ||             ||
--                             notice the double quotes

现在让我们用 OPENQUERY 来做，在动态 SQL 中（你的情况）：

'SELECT * FROM OPENQUERY (VFDB,''SELECT * FROM foo WHERE bar = ''''i am a string'''';'')' 
--                             ^^                              ^^^^
--                             ||                              ||||
--                             double quotes        escaped double quotes => 4 quotes

您在字符串中嵌套了查询，因此每次添加嵌套级别时，您都必须将引号加倍以避免关闭较高的嵌套级别。

强烈反对，因为调试起来真的很痛苦，正如您猜到的那样，更不用说变量连接可能是多么混乱（但是您已经为此使用了 5 个引号，所以您已经知道了:)）。

我修复引号的尝试（无法测试，所以也许我在某些时候搞砸了）：

DECLARE @TSQL nvarchar(max); Declare @STATION_CODE varchar(max); Declare @STATION_CODE_PREV varchar(max);

SET @STATION_CODE='1600020'; SET @STATION_CODE_PREV='1600007'; SET @TSQL='SELECT * FROM OPENQUERY (VFDB,''''SELECT COUNT(TABLE_7.FIFO) AS FIFO_COUNT,TABLE_7.FIFO,TABLE_7.Day_Hour ,TABLE_7.Station_Code,''''FIFO'''' AS Element FROM  ( select CAST(CASE WHEN TABLE_6 .BCD_PRV2_EXIT=TABLE_5 .BCD_PRV2 THEN ''''1'''' ELSE ''''0'''' END AS INT) FIFO,    case when datepart(hour,TABLE_6.CREATION_DATE_E3 )<10 
      then
    ''''0''''
      +Right (Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'''':00 - ''''+''''0''''
      +Right(Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'''':59'''' 
        else

       Right (Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'''':00 - ''''
      +Right(Cast(datepart(hour,TABLE_6.CREATION_DATE_E3 + 100) As Varchar) ,2)+'''':59''''

      end As Day_Hour ,TABLE_6.Station_Code As Station_Code  from

        (           select T1_ENTRY.RANK1_ENTRY AS T5_R1, T1_ENTRY.BCD_PRV1,T1_ENTRY.CREATION_DATE_E1,T2_ENTRY.RANK2_ENTRY , T2_ENTRY.BCD_PRV2 ,T2_ENTRY.CREATION_DATE_E2           from 
                (
                select MFG_UNIT_NUM as BCD_PRV1,CREATION_DATE AS CREATION_DATE_E1 ,ROW_NUMBER()over(order by Creation_Date) as RANK1_ENTRY
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115, ''''REFRIGERATOR'''', NULL, '''''+ @STATION_CODE +''''', NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL 
                ) T1_ENTRY          LEFT JOIN   
                (
                select MFG_UNIT_NUM as BCD_PRV2,CREATION_DATE AS CREATION_DATE_E2,ROW_NUMBER()over(order by Creation_Date) as RANK2_ENTRY
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115, ''''REFRIGERATOR'''', NULL, '''''+ @STATION_CODE_PREV +''''', NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL 
                ) T2_ENTRY          ON T1_ENTRY.RANK1_ENTRY=T2_ENTRY.RANK2_ENTRY-1
        ) TABLE_5

LEFT JOIN 

        (       select T3_EXIT.RANK1_EXIT AS T6_R1, T3_EXIT.BCD_PRV1_EXIT,T3_EXIT.CREATION_DATE_E3,T4_EXIT.RANK2_EXIT , T4_EXIT.BCD_PRV2_EXIT ,T4_EXIT.CREATION_DATE_E4,T3_EXIT.Station_Code            from 
                (
                select MFG_UNIT_NUM as BCD_PRV1_EXIT,CREATION_DATE AS CREATION_DATE_E3 ,ROW_NUMBER()over(order by Creation_Date) as RANK1_EXIT,STATION_CODE as STATION_CODE 
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115,''''REFRIGERATOR'''', NULL, '''''+@STATION_CODE+''''',NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL
                ) T3_EXIT           LEFT JOIN   
                (
                select MFG_UNIT_NUM as BCD_PRV2_EXIT,CREATION_DATE AS CREATION_DATE_E4,ROW_NUMBER()over(order by Creation_Date) as RANK2_EXIT,STATION_CODE as STATION_CODE 
                FROM dbo.DAW_FN_STATS_TLDTLRAW(115,''''REFRIGERATOR'''', NULL,'''''+@STATION_CODE_PREV+''''', NULL,Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0),Dateadd(hh,1, Dateadd(HOUR, Datediff(HOUR,0,GETDATE()),0)))RAWDTL
                        ) T4_EXIT           ON T3_EXIT.RANK1_EXIT=T4_EXIT.RANK2_EXIT-1       ) TABLE_6 ON TABLE_5.BCD_PRV2=TABLE_6.BCD_PRV2_EXIT   )TABLE_7 GROUP BY  TABLE_7.FIFO,TABLE_7.Day_Hour ,Table_7. STATION_CODE'')';

EXEC sp_executesql @TSQL;

Answer 2

您已经得到了答案，所以这只是一个提示，您以后如何轻松解决此类问题。

declare @sql_string varchar(100)
set @sql_string = 'SELECT * FROM OPENQUERY (VFDB,''SELECT * FROM foo WHERE bar = ''''i am a string'''';'')' 
select @sql_string --> This here will let you see how your string looks like

SQL 字符串附近的 OpenQuery 语法不正确

SQL OpenQuery incorrect syntax near string

tsql

sql-server

openquery