how to get result from this data.
- by Shantanu Gupta
I want to compute result from this table.
I want quantity 1 - quantity2 as another column in the table shown below.
this table has more such records
I am trying to query but not been able to get result.
select * from v order by is_active desc, transaction_id desc
PK_GUEST_ITEM_ID FK_GUEST_ID QUANTITY TRANSACTION_ID IS_ACTIVE
---------------- -------------------- ---------------------- -------------------- -----------
12963 559 82000 795 1
12988 559 79000 794 0
12987 559 76000 793 0
12986 559 73000 792 0
12985 559 70000 791 0
12984 559 67000 790 0
12983 559 64000 789 0
12982 559 61000 788 0
12981 559 58000 787 0
12980 559 55000 786 0
12979 559 52000 785 0
12978 559 49000 784 0
12977 559 46000 783 0
12976 559 43000 782 0
I want another column that will contain the subtraction of two quantities .
DESIRED RESULT SHOULD BE SOMETHING LIKE THIS
PK_GUEST_ITEM_ID FK_GUEST_ID QUANTITY Result TRANSACTION_ID IS_ACTIVE
---------------- -------------------- ---------------------- -------------------- -----------
12963 559 82000 3000 795 1
12988 559 79000 3000 794 0
12987 559 76000 3000 793 0
12986 559 73000 3000 792 0
12985 559 70000 3000 791 0
12984 559 67000 3000 790 0
12983 559 64000 3000 789 0
12982 559 61000 3000 788 0
12981 559 58000 3000 787 0
12980 559 55000 3000 786 0
12979 559 52000 3000 785 0
12978 559 49000 3000 784 0
12977 559 46000 3000 783 0
12976 559 43000 NULL 782 0