Opening and Closing Stock Monthwise

Question

hi,
I need to display month wise Stock details like below
month-year Opening-Stock STock-In Stock-Out closing-Stock
I have made the query, but this query gives only monthwise stock-in and stock-out. How do i get Opening-Stock and closing-Stock.
SELECT e.STORE, months.month,
SUM( (CASE WHEN trunc(e.MAT_IN_DATE,'MM') = months.month THEN MVALUE ELSE 0 END) )
Mat_Rcvd,
SUM( (CASE WHEN trunc(E.MAT_OUT_DATE,'MM') = months.month THEN MVALUE ELSE 0 END) ) Mat_Out
FROM
SELECT STORE,ITEM_CODE, SUM(NVL(MQTY,0)) M_QTY, SUM(NVL(MVALUE,0)) MVALUE,
MAT_OUT_DATE, MAT_IN_DATE
FROM
SELECT GD.TO_STORE STORE , GD.ITEM_CODE,
GD.QUANTITY MQTY, GD.AED_RATE * GD.QUANTITY MVALUE, NULL MAT_OUT_DATE , GRN_DATE MAT_IN_DATE
FROM GRN_DETAILS GD , GRN_MASTER GM
WHERE GD.GRN_NO = GM.GRN_NO
UNION ALL
SELECT MI.STORE, MI.ITEM_CODE, (NVL(MI.QUANTITY,0)) MQTY,
MI.QUANTITY * UNIT_RATE MVALUE , mi.ISSUE_DATE MAT_OUT_DATE , NULL MAT_IN_DATE
FROM MATERIAL_ISSUE MI , MINR_MASTER MM
WHERE MI.MIN_NO = MM.MIN_NO
WHERE STORE='ABC'
GROUP BY STORE, ITEM_CODE, MAT_OUT_DATE, MAT_IN_DATE
) E ,
(SELECT add_months( date '2007-07-01', level ) month,
     FROM dual
WHERE add_months( date '2007-07-01', level ) < SYSDATE
CONNECT BY level <= 30 )months
GROUP BY e.STORE, months.month
ORDER BY MONTH
/

Answer 1

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3. We dont know your DB structure or How your Data is. So you need to let us know. The best way would be to give some sample data like this.
I have the following table called sales
with sales
as
      select 1 sales_id, 1 prod_id, 1001 inv_num, 120 qty from dual
      union all
      select 2 sales_id, 1 prod_id, 1002 inv_num, 25 qty from dual
select *
  from sales 4. Rather than telling what you want in words its more easier when you give your expected output.
For example in the above sales table, I want to know the total quantity and number of invoice for each product.
The output should look like this
Prod_id   sum_qty   count_inv
1         145       2 5. When ever you get an error message post the entire error message. With the Error Number, The message and the Line number.
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