Executing Prepared Statements with FireDAC Classes
By default, TFDQuery prepares the query to avoid recompiling the same query over and over.
FDQuery1.SQL.Text := 'SELECT * FROM Opportunities WHERE CreatedBy=:CreatedBy' FDQuery1.ParamByName('CreatedBy').AsString := 'Jack'; FDQuery1.Open;
- If you need to execute a command only once, set ResourceOptions.DirectExecute to true.
- The TFDConnection class is most useful for one-off data manipulation commands, where prepared statements are unnecessary.
- The connection must be active and open while a statement is prepared.