Executing sql update statement to linked server

Wed, 09 Dec 2015 13:31:48 +0000

Hi all,

If you would ever need to update data that you can access through a linked server in sql server.

My example, I have a linked server over odbc to an other database.
After importing the data I have to mark the data as imported.

I tried several solutions:

Database.ExecSQL in which I provided in the sql the full path to the linked server
Database.ExecSQL with the OPENQUERY operator
Executing a stored procedure which would update the values

None of them was working.

As last option I used the Database.ExecuteODBCQuery

This one was working but it is important to include this function in a try catch statement as it will always throw an error as it is expecting a dataset back.

ExecuteODBCQuery(var QueryHandle: integer; ContextHandle:
TContextHandle; Connection, SQL: string; ForceRefresh, GetAllRecords:
boolean; StoreID: integer): TDataSet
More information on this function can be found in EDN

Code example on how to use the function:

    function executeOdbcQuery(sql, storeId, OdbcConnectionString){
  var QueryHandle = 1;
  var ODBCContext = Database.OpenTemporaryContext;
  try {
    if(sql.indexOf('select') === -1){
      Database.ExecuteODBCQuery(QueryHandle, ODBCContext, OdbcConnectionString, sql, false, false, storeId);
    }else{
      var ds = Database.ExecuteODBCQuery(QueryHandle, ODBCContext, OdbcConnectionString, sql, false, false, storeId);
      return ds;
    }
  }catch(ex){
    database.log(ex.message);
  }
}

Calling the function:

var sql = "insert update query here";
    OdbcConnectionString=INSERTODBCCONNECTIONSTRING

 executeOdbcQuery(sql,4,OdbcConnectionString)

I hope this helps someone in the future.

Kind regards,

Brosens Tom

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Executing sql update statement to linked server