Question

我试图在传递查询中使用参数问题是当我设置语句时我得到

＆＃39; +＆＃39;附近的语法不正确。期待＆＃39;）＆＃39;

我之前已经这样做了所以我不确定我现在做错了什么。我已经缩短了下面的查询，给出了要点。

DECLARE @WORK_DATE AS VARCHAR(20)

SET @WORK_DATE = '20160210'

SELECT * FROM OPENQUERY(DATA_BASE_1,
  'SELECT EMPLOYEE.EMPLOYEE_NUMBER AS EMPLOYEE_ID
  FROM TABLE_1 EMPLOYEE
  LEFT JOIN TABLE_2 PERSON
  ON EMPLOYEE.EMPLOYEE_NUMBER = PERSON.EMPLOYEE_NUMBER
  AND PERSON.WORK_DATE = '''''+ @WORK_DATE + '''''')

Answer 1

来自Transact-SQL OPENQUERY documentation：

<强>说明

OPENQUERY不接受其参数的变量。

执行此操作的一种方法是将变量传递给存储要执行的查询的字符串，然后执行它。

DECLARE @SQL_TO_EXEC NVARCHAR(MAX), @WORK_DATE VARCHAR(20)

SET @WORK_DATE = '20160210'
SET @SQL_TO_EXEC = 'SELECT * FROM OPENQUERY(DATA_BASE_1, ''SELECT EMPLOYEE.EMPLOYEE_NUMBER AS EMPLOYEE_ID FROM TABLE_1 EMPLOYEE LEFT JOIN TABLE_2 PERSON ON EMPLOYEE.EMPLOYEE_NUMBER = PERSON.EMPLOYEE_NUMBER AND PERSON.WORK_DATE = '''''+ @WORK_DATE + ''''''')'

EXEC (@SQL_TO_EXEC)

将参数添加到传递查询中

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