Help Calculating in SQL

Question

Hi,
I am using oracle 10g.
I want to build a sql that helps me keep track of all the stocks I've bought and sold. Provided that I sell same qty that I buy. Here is the scenarion I am looking at as my initial table and following is my result to achieve.
Here are all my actions Which I store in a table
ACTION    SMBL    QTY    PRICE    AMOUNT    COMM    STATUS
Sell    WFC    300    17.85         5355     7   Executed
Buy     WFC    100    13.9299   -1392.99     7   Executed
Buy     WFC    200    15.60        -3120     7   ExecutedHere is What I would like to achieve,
SMBL    QTY     AVG_BUY_PRICE       TOTAL_BUY_PRICE     AVG_SELL_PRICE      TOTAL_SELL_PRICE    P&L     P&L %
WFC     300       15.08996667           4526.99             17.82666667         5348            821.01 18.14%If someone can help me with something that would allow me buy and sell different qty and still keep track , that would be great....
Thanks.........

Answer 1

Hello,
Output from the above query
Copyright (c) 1982, 2007, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Data Mining Scoring Engine options
SQL> set lines 400;
SQL> WITH t
  2         AS (  SELECT   smbl,
  3                        action,
  4                        SUM (qty) qty,
  5                        CASE WHEN action = 'Buy' THEN AVG (price) END
  6                           AS avg_buy_price,
  7                        CASE
  8                           WHEN action = 'Buy' THEN SUM (ABS (amount) + comm)
  9                        END
10                           AS total_buy_price,
11                        CASE WHEN action = 'Sell' THEN AVG (price) END
12                           AS avg_sell_price,
13                        CASE WHEN action = 'Sell' THEN SUM (amount - comm) END
14                           AS total_sell_price
15                 FROM   accounts
16             GROUP BY   smbl, action)
17    SELECT   smbl,
18             t.qty,
19             SUM (avg_buy_price) avg_buy_price,
20             SUM (total_buy_price) total_buy_price,
21             SUM (avg_sell_price) avg_sell_price,
22             SUM (total_sell_price) total_sell_price,
23             (SUM (total_sell_price) - SUM (total_buy_price)) AS "P_AND_L",
24            round( ((SUM (total_sell_price) - SUM (total_buy_price)) /  SUM (total_buy_price) ) * 100, 2) as "P_AND_L%"
25      FROM   t
26  GROUP BY   smbl, qty;
SMBL        QTY AVG_BUY_PRICE TOTAL_BUY_PRICE AVG_SELL_PRICE TOTAL_SELL_PRICE    P_AND_L   P_AND_L%
WFC         300      14.76495         4526.99          17.85             5348     821.01      18.14
SQL>