IDSalesIDCityIDMoney
110201000
210222000
311204000
411228000
510203000
610225000
711207000
811229000
select from table SalesID,CityID,Sum(Money) Groupby SalesID,CityID
 -- or
select from table SalesID,CityID,Sum(Money) Groupby CityID, SalesID

[download]

Those should vary only in output order of the summed rows. The danger of automatic grouping is when/if someone picks "ID" in the select list... then it all goes to heck. The "common case" for Group By is to list all columns not aggregated in the select_column clause. Automatically forcing group-by seems to be almost assuredly doomed to run into keys and foreign-keys when they are incorrectly added to the columns list.

In your limited case, tho, I'm thinking you're safe.

--
$you = new YOU;
honk() if $you->love(perl)

In reply to Re: (somewhat OT) Seeking a SQL counter-example by extremely
in thread (somewhat OT) Seeking a SQL counter-example by dragonchild

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