Re: please give me select sqls examples to distinct these!

On Tue, Oct 25, 2022 at 8:56 AM Rob Sargent <robjsargent(at)gmail(dot)com> wrote:

> On 10/25/22 09:24, David G. Johnston wrote:
>
> On Tue, Oct 25, 2022 at 8:22 AM David G. Johnston <
> david(dot)g(dot)johnston(at)gmail(dot)com> wrote:
>
>> On Tue, Oct 25, 2022 at 7:06 AM Rob Sargent <robjsargent(at)gmail(dot)com>
>> wrote:
>>
>>>
>>>
>>> 2: select * from table join table b on Id = idb
>>>
>>>
>>>
>> #2 is probably conceptually correct but in this context should be written
>> as:
>>
>>
> Actually, a join is NOT conceptually correct here - the output columns for
> "SELECT *" will be wrong.
>
> David J.
>
> OK. TBH I thought this was the JOOQ list! Didn't notice the typedef. So
> this is all about exact match "tables".
>
> I suppose my #2 could be framed as
> select a* from table as a join table as b on a.<criteria> =
> b.<criteria>
> to be a functional equivalent of INTERSECT?
>

SELECT DISTINCT a.*

David J.