SQL linked server, open query using variable

Question

SELECT * INTO #C_INFO FROM OPENQUERY(ORACLE_CMIDW1,' SELECT A.CID, A.ANO,
A.COMP_REVD_DATE, A.REVIEW_COMP_DATE, A.ISSUE, B.ENT_ID, A.TYPE_ID FROM XXX
B INNER JOIN YYY A ON B.ANO = A.ANO WHERE A.REVIEW_COMP_DATE Between
''2012-03-01'' And ''2013-10-31'' AND Not A.ISSUE = 110 AND A.TYPE_ID = 1
and B.ENT_ID In (2,3) ')

Above sql works perfect but i dont want to hard code the dates. That's the reason trying to use variable. date format (yyyy-mm-dd, '2013-03-01'), anything other than this date format, Oracle doesn't execute the sql.

Is it possible to do this, If so please re write the whole sql using variable so that i can see how it can be done.

Thanks!

Answer 1

The below code should do the trick. You can't pass a variable to an OPENQUERY. However, you can dynamically generate the code that you will execute via OPENQUERY.

DECLARE @StartDate DATETIME = '2012-03-01';
DECLARE @EndDate DATETIME = '2013-10-31';

DECLARE @SqlCommand NVARCHAR(MAX) = N'SELECT * 
INTO #C_INFO 
FROM OPENQUERY(ORACLE_CMIDW1,
    ''SELECT A.CID, A.ANO, A.COMP_REVD_DATE, A.REVIEW_COMP_DATE, A.ISSUE, B.ENT_ID, A.TYPE_ID
    FROM XXX B
    INNER JOIN YYY A
        ON B.ANO = A.ANO
    WHERE A.REVIEW_COMP_DATE BETWEEN ''''' + CONVERT(CHAR(10), @StartDate, 120) + ''''' AND ''''' + CONVERT(CHAR(10), @EndDate, 120) + '''''
    AND Not A.ISSUE = 110 AND A.TYPE_ID = 1 and B.ENT_ID In (2,3)'');';

PRINT @SqlCommand

EXEC sp_ExecuteSQL @SqlCommand;

On a separate note, I would recommend looking into replacing your linked server query with a SSIS package that loads the data. Although the above code works, this is not the most efficient way to transfer data from an Oracle server to SQL Server.