...how can union be the same as intersect..iam trying to get the names
of comapnies that are in both queries.for example the first query
gives me companies A, B AND C and the second query gives A , B..i want
the intersect of these 2 queriesso i get companies A and B...if i
did a union i will get A, B and C
On Wed, 3 Nov 2004 09:13:08 -0500, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> Assuming you have access to MySQL 4.0+
>
> select csymbol from tblavgPrice where avg > 1 and avg < 10
> UNION
> select csymbol from tblAssets where assets > 100 and assets < 500
>
> Unless you say UNION ALL, you won't get duplicate values.
> For more details: http://dev.mysql.com/doc/mysql/en/UNION.html
>
> Just out of curiosity and because this is not the first time the INTERSECT
> question has come up. What SQL dialect are you coming from?
>
> IF you are using a MySQL server that is pre-4.0+, you will have to recode
> that query using any of several variations that use a temporary table. Let
> me know if you need that work-around.
>
> Shawn Green
> Database Administrator
> Unimin Corporation - Spruce Pine
>
>
> Chaitra Yale <[EMAIL PROTECTED]> wrote on 11/03/2004 02:12:42 AM:
>
>
>
> > hi
> >
> > i have a problem mysql doesnt seem to support the intersect can
> > somebody help how i can write the followoing code in mysql
> >
> > select csymbol from tblavgPrice where avg > 1 and avg < 10
> > intersect
> > select csymbol from tblAssets where assets > 100 and assets < 500
> >
> > thanks
> >
> > --
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> >
>
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