Question

SQL Server procedure can return result sets. I have a table emp(emp__id, emp__name, …). The procedure below will return a list of employees that matched with the name provided.

CREATE OR REPLACE PROCEDURE get_employee_by_name ( @name VARCHAR(100) ) AS SELECT emp_id, emp_name FROM emp WHERE emp_name = @name; 

So in the client code, to get the data I use ADO.NET.

SQLDataAdapter adapter = new SQLDataAdapter('get_employee_by_name', cnString); SQLDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure; DataTable dt = new DataTable('employee');  adapter.Fill(dt); 

How can I code equivalently in PL/SQL?

Answer 1

Use a Ref cursor for the Stored Procedure:
http://www.oradev.com/ref_cursor.jsp

For the client part use the Oracle Data Provider. You can download it from Oracle and the syntax is similar to the SQLDataAdapter. Something like this:

OracleDataAdapter da = new OracleDataAdapter(); da.SelectCommand = new OracleCommand('get_employee_by_name', Connection); OracleParameter prm = da.SelectCommand.Parameters.Add('pName', OracleDbType.VarChar2); prm.Direction = ParameterDirection.Input; prm.Value = 'MyName'; prm = da.SelectCommand.Parameters.Add('pResult', OracleDbType.RefCursor); prm.Direction = ParameterDirection.Output; DataTable dt = new DataTable(); da.Fill(dt);