运行使用 OPENQUERY 访问链接服务器的 T-SQL 查询时出现 JDBC 错误

Question

I'm trying to execute a SQL Server query using prepared statements:

PreparedStatement pst = con.prepareStatement("select * from openquery(SERVERNAME," +
                                             "'Select r.A , r.B, c.C from Y r" +
                                             "INNER JOIN X c" +
                                             "ON r.RNID = c.RNID ')" +
                                             "where  c.C in ?");

pst.setString(1, data);

ResultSet rs = pst.executeQuery();

I get this error message:

com.microsoft.sqlserver.jdbc.SQLServerException: Cannot get the column information from OLE DB provider "MSDASQL" for linked server "SERVERNAME".

Update

After fixing the SQL statement to add the missing spaces

PreparedStatement pst = con.prepareStatement("select * from openquery(SERVERNAME, " +
                                             "'Select r.A , r.B, c.C from Y r " +
                                             "INNER JOIN X c " +
                                             "ON r.RNID = c.RNID ') " +
                                             "where  c.C in ?");

I now get the error

com.microsoft.sqlserver.jdbc.SQLServerException: The multi-part identifier "cC" could not be bound

Answer 1

The table aliases used within the OPENQUERY function are simply not available to the query that calls it. So, this will fail with 'multi-part identifier "c.ID" could not be bound':

SELECT * 
FROM 
    OPENQUERY(ACCDBTEST, 'SELECT c.ID, c.LastName FROM Clients c')
WHERE c.ID = 1

but this works

SELECT * 
FROM 
    OPENQUERY(ACCDBTEST, 'SELECT c.ID, c.LastName FROM Clients c')
WHERE ID = 1

as does this

SELECT * 
FROM 
    OPENQUERY(ACCDBTEST, 'SELECT c.ID, c.LastName FROM Clients c') AS x
WHERE x.ID = 1

Answer 2

It's look like you need to make simple changes in your query. You should try as I shown below then it will work. You use below Four part table name in a distributed query and depending on your Java backend you need to omit the database name and schema.

    PreparedStatement pst = con.prepareStatement("Select r.A , r.B, c.C from 
    [SERVERNAME].[databaseName].[dbo].Y r" +
                                                 "INNER JOIN [SERVERNAME].[databaseName].[dbo].X c" +
                                         "ON r.RNID = c.RNID '" +
                                         "where  c.C in ?");

    pst.setString(1, data);

    ResultSet rs = pst.executeQuery();