Want a SQL query

Question

Hi All
This is mu use case
1. I have a table called Trades which stores Trades from different clients
2. In Trade Table I have a field called 'TRADE_FEE_REF' which store all the fees for a trade as a reference
3. In table 'TRADE_FEE_DETAILS' it stores the fees related to a perticular trade
4. Trades and TRADE_FEE_DETAILS tables have a foriegn key.
5. Now I want to display the following result for user.
I want a single row for Trades which includes Fee details as columns in that selection
ex: This is a Row from Trade table
Date, quantity, Price, Free_ref_no
1/1/2011, 2000, 12.45 , 1
This is the records from TRADE_FEE_DETAILS for the perticular trade above
Fee_Ref, Fee_type,Fee_amount
1          ,BR, 200
1          ,ST,300
1          ,STT,100
now I want to display the result as follow
Date, quantity, Price, BR,ST,STT
1/1/2011, 2000, 12.45,200,300,100
How do I retrieve this result from sql query
Thnks
Padma

Answer 1

You can use PIVOT function to convert rows to columns
with trade as
    select to_DATE('1-JAN-2011','DD-MON-YYYY') col_date, 2000 quantity, 12.45 Price, 1 Free_ref_no from dual
trade_fee_details as
    select 1 Fee_Ref, 'BR' Fee_type, 200 Fee_amount from dual union all
    select 1, 'ST', 300 from dual union all
    select 1, 'STT', 100 from dual
SELECT
    td.col_date,
    td.quantity,
    td.price,
    tf.BR,
    tf.ST,
    tf.STT
FROM
    trade td,
        SELECT
        FROM
                SELECT
                FROM
                    trade_fee_details
            PIVOT (SUM(Fee_amount) FOR Fee_type IN ( 'BR' AS BR,'ST' AS ST,'STT' AS STT ))
    ) tf
WHERE
    td.Free_ref_no = tf.fee_ref;
COL_DATE                  QUANTITY               PRICE                  BR                     ST                     STT                   
01-JAN-11 00:00:00        2000                   12.45                  200                    300                    100