OpenQuery SQL - 我的单引号出了什么问题？

Question

当我Exec的这个

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 + '''' + ''')' 

我得到这个。

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

但我得到的错误是CH​​E％附近有错误的语法。然而，语法对我来说看起来没问题。怎么了？

Answer 1

您所查询的期待权，除了在列入服务器名称由声明，它应阅读：

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

请试试这个：

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 + '''''' + ''')' 

它给下面的查询：

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查询中的变量需要额外的引号，因为它是动态SQL。