How to write this query# Database - 数据库
b*o
1 楼
Suppose I have a table taking care of incoming:
Date amount unit_price($)
01/01/05 5 7
01/02/05 4 2
01/03/05 6 3
01/04/05 3 6
01/05/05 8 1
Also have a table taking care of outgoing:
Date amount cost($)
01/01/05 2
01/02/05 7
01/03/05 6
01/04/05 3
01/05/05 4
I would like to define the outgoing cost using "First in First out", so the
cost should be calculated as:
Date amount cost($)
01/01/05 2 2*$7
Date amount unit_price($)
01/01/05 5 7
01/02/05 4 2
01/03/05 6 3
01/04/05 3 6
01/05/05 8 1
Also have a table taking care of outgoing:
Date amount cost($)
01/01/05 2
01/02/05 7
01/03/05 6
01/04/05 3
01/05/05 4
I would like to define the outgoing cost using "First in First out", so the
cost should be calculated as:
Date amount cost($)
01/01/05 2 2*$7
