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Create a running total with SQL select statement

Posted on 2006-05-31
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Last Modified: 2006-11-18
I have a set of data in a table which appears as follows

Count    Parent     Child
1           AB20001 TP22226
1           AB20001 TP22258
1           AB20001 TP22252
1           TK55558 TP99562
1           GK88885 CK25996
1           GK88885 CK25996

I would like to create a select statement that will give a result as follows

Count    Parent     Child        Running Total
1           AB20001 TP22226   1
1           AB20001 TP22258   2
1           AB20001 TP22252   3
1           TK55558 TP99562   1
1           GK88885 CK25996   1
1           GK88885 CK25996   2

The addition is the Running total column. This is a running total of the number of instances of the parent code and is being reset on its change. I am unsure of the command that I can use that may be able to achieve this.

Thanks
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Question by:stonehage
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Guy Hengel [angelIII / a3] earned 200 total points
ID: 16797979
select count, parent, child, (select count(*) from yourtable i where i.parent = p.parent and i.child <= p.child ) as r_total
from yourtable p order by p.parent, p.child
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by:Guy Hengel [angelIII / a3]
ID: 16797980
in sql server 2005, the syntax can be made differently...
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