Hi friends Please give me a solution for my doubt. I am Creating a dynamic SQL query such that if the user selects any value from the picklist then that I set the value in PreparedStatement using the following statement. For simplification, I write the simple query but the actual query is big. I am using Prepared Statement to set the value. DBSQL Query = "select * from table1 where id=?"
StringBuffer sb = new StringBuffer(); sb.append("select * from table1 where id=?"); ps = con.prepareStatement(sb.toString()); ps.setInt(1,value); rs = ps.executeQuery(); Suppose if the User did not select any value then I need to return all the values from the table. DBSQL Query = select * from table1 where id is not null I do not know how to formulate the prepared statement such that it will match the exact DBSQL Query. Give me a proper solution how to handle this kind of situation? Thanks, Kumaran.S
posted 12 years ago
Your best bet is to build the final query from 2 substrings: A fixed part "select * from table1 " and a variable part that's either "where id=?" or "where id is not null" based on the selected value for the query.