Re: sql select count(*) and join

["rick baird" <rick.baird@xxxxxxxxx>]

the first one has no need for the join, unless you're looking for existence.

the second replace count(*) with count(distinct hord)

hth

On 6/4/07, Jim Franz <franz400@xxxxxxxxxxxx> wrote:
> Just not getting it....
> Need several counts between a header & detail file
> 1. SELECT count(*) FROM header a join detail b on hord=dord WHERE
> a.xxx <> 0 and a.yyy=0
> This is counting the detail records.... I need header counts.
>
> 2. SELECT count(*) FROM header a join detail b on hord=dord WHERE
> a.xxx <> 0 and sum(b.a + b.b + b.c) <>0
> This is counting the detail records.... I need header counts.
>
> Appreciate any pointers. The 3 SQL books I have are useless in examples
> for this.
> jim
>
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