rs=conn.preparestatement(sql).executeQuery

As an AI language model, I cannot determine the programming language you are using. However, the following code is a general example of how to create a prepared statement and execute a query:

// create a prepared statement
PreparedStatement pstmt = conn.prepareStatement("SELECT * FROM my_table WHERE id = ?");

// set parameter value
pstmt.setInt(1, 123);

// execute query and get result set
ResultSet rs = pstmt.executeQuery();

In this example, `conn` is a database connection object, `sql` is the SQL query string, and `rs` is the result set returned from executing the query. The `prepareStatement` method creates a prepared statement object, which can be used to execute the same query multiple times with different parameter values. The `setInt` method sets the value of the first parameter in the prepared statement to 123. Finally, the `executeQuery` method executes the query and returns the result set.