OpenQuery SQL - 我的單引號出了什麼問題？

Question

當我Exec的這個

SET @Qry = 

    'SELECT [LMITNO] INTO ##TABLETEMP' + LTRIM(RTRIM(STR(@@SPID))) + '  
    FROM OPENQUERY(MAA,''SELECT DISTINCT [LMITNO] FROM MAA.ESMEL3.MVXDDTPRD.MILOMA 
    WHERE [LMITNO] LIKE ' + '''' + @ChemicalPreFix + '''' + ''')' 

我得到這個。

SELECT [LMITNO] INTO ##TABLETEMP91 FROM 
    OPENQUERY(MAA,'SELECT DISTINCT [LMITNO] 
    FROM MAA.ESMEL3.MVXDDTPRD.MILOMA WHERE [LMITNO] LIKE ''CHE%''') 

但我得到的錯誤是CH​​E％附近有錯誤的語法。然而，語法對我來說看起來沒問題。怎麼了？

Answer 1

您所查詢的期待權，除了在列入服務器名稱由聲明，它應閱讀：

SET @Qry = 

    'SELECT [LMITNO] INTO ##TABLETEMP' + LTRIM(RTRIM(STR(@@SPID))) + '  
    FROM OPENQUERY(MAA,''SELECT DISTINCT [LMITNO] FROM ESMEL3.MVXDDTPRD.MILOMA 
    WHERE [LMITNO] LIKE ' + '''' + @ChemicalPreFix + '''' + ''')' 

Answer 2

請試試這個：

SET @Qry = 

'SELECT [LMITNO] INTO ##TABLETEMP' + LTRIM(RTRIM(STR(@@SPID))) + '  
FROM OPENQUERY(MAA,''SELECT DISTINCT [LMITNO] FROM MAA.ESMEL3.MVXDDTPRD.MILOMA 
WHERE [LMITNO] LIKE ' + '''''' + @ChemicalPreFix + '''''' + ''')' 

它給下面的查詢：

SELECT [LMITNO] INTO ##TABLETEMP53 FROM 
OPENQUERY(MAA,'SELECT DISTINCT [LMITNO] FROM MAA.ESMEL3.MVXDDTPRD.MILOMA 
WHERE [LMITNO] LIKE ''CHE%''') 

它成功解析。 SELECT查詢中的變量需要額外的引號，因爲它是動態SQL。