On 8/19/07, giuseppe.derossi@email.it <giuseppe.derossi@email.it> wrote:
> Hi,
> I need to implement a filter in order to select from the first table the
> second one...
> it could be simple, but i'm wasting time. Please, is there anyone could help
> me?
> thanks in advance
> Giu
>
> c1 c2 c3 c4 c5
> 1)133659;1;"0039";"00121";7
> 2)133664;1;"0039";"00121";12
> 3)133664;2;"0039";"00121";12
> 4)133665;2;"0039";"00121";12
> 5)135460;1;"0039";"01152";
> 6)135460;2;"0039";"01152";
> 7)135471;1;"0050";"00153";4
> 8)135471;2;"0050";"00153";4
>
>
> 1)133659;1;"0039";"00121";7
> 3)133664;2;"0039";"00121";12
> 4)133665;2;"0039";"00121";12
> 6)135460;2;"0039";"01152";
> 8)135471;2;"0050";"00153";4
Do you want the things in table1 that are in table2, or the things in
table2 that are NOT in table2?
Things in table1 that are in table2:
select * from table1 join table2 on (table1.field1=table2.field1 and
table1.field2=table2.field2 and ....)
things in table1 that are not in table2:
select * from table1 left join table2 on (table1.field1=table2.field2
and table1.field2=table2.field2 and ...) where table1.field1 IS NULL
or table1.field2 IS NULL or ...
replace elipses with the rest of the fields.