Re: SQL to retrieve min value of the combination

Julia,

Not the same by any means.

Your select * does absolutely nothing -- the subquery results are simply passed thru unchanged

Your subquery contains only two columns -- the assumption is that all columns should be displayed

Try them both on the EMP table with the empno, deptno, and sal in the resultset and dept and sal in the subquery ("Write a report that lists the lowest paid employees in each department")

• mcs

"Julia Sats" <julia.sats_at_sympatico.ca> wrote in message news:iKnLb.79822$BA6.1688941_at_news20.bellglobal.com...
| Use this one , the same but easier
| select *
| from (
| select col1, min(col3)
| from x
| group by col1
| )
|
| "Mark C. Stock" <mcstockX_at_Xenquery .com> wrote in message
| news:D_6dneS_LcPC0WGiRVn-jg_at_comcast.com...
| > question's a little vague, but assuming you are trying to get records
 for
| > the minimum values of the first and third column, for all rows in a
 table,
| > you could try a subquery like
| >
| > select *
| > from x
| > where (col1, col3) in (
| > select col1, min(col3)
| > from x
| > group by col1
| > )
| >
| > but don't try this until you understand why it works ;-)
| >
| > -- mcs
| >
| >
| > "Ravindra Harve" <rharve_at_hotmail.com> wrote in message
| > news:835dd0ad.0401070930.575a25ba_at_posting.google.com...
| > | Hi,
| > |
| > | I have the following table
| > |
| > | 1001 2 3
| > | 1001 3 5
| > | 1001 5 7
| > | 1002 5 4
| > | 1002 6 2
| > |
| > | I need to get a result
| > |
| > | 1001 2 3
| > | 1002 6 2
| > |
| > | How is it possible ?
| >
| >
|
|
Received on Fri Jan 09 2004 - 15:29:30 CET