我将参数传递给链接服务器,如下所示:
DECLARE
@QRY01 VARCHAR(8000)
,@WIP_PRM VARCHAR(12)
--START SEARCHING WIP_AUTO_KEY IN COST_AUDIT_LOG FROM LAST RECORD INCLUDED IN tbl_WIPLOG1
SET @WIP_PRM = CONVERT(VARCHAR(12),(SELECT MAX(WIP_AUTO_KEY) FROM tbl_WIPLOG1))
SET @QRY01 = '
SELECT *
FROM
OPENQUERY(LINKED_SERVER,
''SELECT DISTINCT
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY
,QCTL.WIP_AUDIT_LOG.WOO_AUTO_KEY
FROM QCTL.WIP_AUDIT_LOG
WHERE
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY > '+CHAR(39) + CHAR(39)+CAST(@WIP_PRM AS nvarchar(500))+CHAR(39) + CHAR(39)+N''')
EXEC(@QRY01)
看来OPENQUERY语句中的参数格式不正确或者在它前面需要一个关键字来将其指定为文本,因为整个语句都用括号括起来。如果我输入参数的值,如下所示查询有效,但不是上述格式。
SET @QRY01 = '
SELECT *
FROM
OPENQUERY(LINKED_SERVER,
''SELECT DISTINCT
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY
,QCTL.WIP_AUDIT_LOG.WOO_AUTO_KEY
FROM QCTL.WIP_AUDIT_LOG
WHERE
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY > ''''1432697'''' '
EXEC(@QRY01)
如何使查询以正确的格式接受参数?
@leon,你需要取出CHAR(39)来简化查询。
以下是修改后的版本:
DECLARE
@QRY01 VARCHAR(8000)
,@WIP_PRM VARCHAR(12)
--START SEARCHING WIP_AUTO_KEY IN COST_AUDIT_LOG FROM LAST RECORD INCLUDED IN tbl_WIPLOG1
SET @WIP_PRM = CONVERT(VARCHAR(12),(SELECT MAX(WIP_AUTO_KEY) FROM tbl_WIPLOG1))
SET @QRY01 = '
SELECT *
FROM
OPENQUERY(LINKED_SERVER,
''SELECT DISTINCT
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY
,QCTL.WIP_AUDIT_LOG.WOO_AUTO_KEY
FROM QCTL.WIP_AUDIT_LOG
WHERE
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY > '+CAST(@WIP_PRM AS nvarchar(500))+ N''')'
EXEC(@QRY01)
这应该给你这个输出:
SELECT *
FROM
OPENQUERY(LINKED_SERVER,
'SELECT DISTINCT
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY
,QCTL.WIP_AUDIT_LOG.WOO_AUTO_KEY
FROM QCTL.WIP_AUDIT_LOG
WHERE
QCTL.WIP_AUDIT_LOG.WIP_AUTO_KEY > 1432697')