在 OPENQUERY 中包含参数列表

Question

我正在尝试从执行以下代码的外部数据库服务器获取值：

DECLARE @TSQL VARCHAR(8000), @VAR CHAR(2)
DECLARE @Prefixos VARCHAR(MAX);

WITH cte AS 
(
    SELECT DISTINCT prefixo 
    FROM ARH.arh.UorPos
)
SELECT @Prefixos = COALESCE(@Prefixos + ', ', '') + prefixo 
FROM cte 
ORDER BY prefixo
--SELECT @Prefixos --print a list of values separated by comma. eg.: 1, 2, 3

SELECT  @TSQL = 'SELECT * FROM OPENQUERY(DICOI_LINKEDSERVER,''SELECT * FROM ssr.vw_sigas_diage where cd_prf_responsavel in ('''''  + @Prefixos + ''''''') order by cd_prf_responsavel, codigo'
EXEC (@TSQL)

但我得到：

OLE DB provider "MSDASQL" for linked server "DICOI_LINKEDSERVER" returned message "ERRO: syntax error at the end of input;
No query has been executed with that handle".

Msg 7350, Level 16, State 2, Line 1
Cannot get the column information from OLE DB provider "MSDASQL" for linked server "DICOI_LINKEDSERVER".

我已研究以上链接以尝试解决它：

谁能帮我解决一下？

提前致谢。

Answer 1

在使用 EXEC 运行查询之前，最好先检查生成的 SQL 字符串的外观。

例如通过选择变量

DECLARE @TSQL VARCHAR(8000), @VAR CHAR(2)
DECLARE @Prefixos VARCHAR(MAX);

WITH cte AS 
(
    SELECT DISTINCT prefixo 
    FROM (values ('1'),('2'),('3')) q(prefixo)
)
SELECT @Prefixos = COALESCE(@Prefixos + ', ', '') + prefixo 
FROM cte 
ORDER BY prefixo

SELECT  @TSQL = 'SELECT * FROM OPENQUERY(DICOI_LINKEDSERVER,''SELECT * FROM ssr.vw_sigas_diage where cd_prf_responsavel in ('''''  + @Prefixos + ''''''') order by cd_prf_responsavel, codigo'

select @TSQL as TSQL
-- EXEC (@TSQL)

那你可以目测一下有没有什么奇怪的地方
或者自己尝试运行那 sql 看看它是否失败。

从那个 T-SQL 它 returns 这个结果 :

SELECT * FROM OPENQUERY(DICOI_LINKEDSERVER,'SELECT * FROM ssr.vw_sigas_diage where cd_prf_responsavel in (''1, 2, 3''') order by cd_prf_responsavel, codigo

请注意，该字符串中有很多单引号。将 IN 与数字一起使用时，不需要单引号。最后还少了点什么。

...  in ('+ @Prefixos +') order by cd_prf_responsavel, codigo'');';

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