Re: Bitwise operation

Bruno,Hubert,

Thanks.
It's all crystal clear now.

Now I can keep moving on with my app.

If all goes well I hope to add a 'techdoc' on how to do this.
I've found documents from other DBMS on using Bitwise operations
but not PG.

Cheers
Rudi.

Bruno Wolff III wrote:

>On Mon, Jun 30, 2003 at 22:28:15 +1000,
> Rudi Starcevic <rudi(at)oasis(dot)net(dot)au> wrote:
>
>
>>Hi,
>>
>>I'm learning to use Postgresql's bitwise operator's as I'm interested
>>in building super fast search's based on user selections in web forms.
>>
>>So far so good but I have just lost it a little so I thought I'd post.
>>Please growl at me if I'm asking on the wrong list :-)
>>
>>I understand this:
>>
>>SELECT 111 & 11 = 11
>>
>>but not this
>>
>>SELECT 1111 & 111 = 71
>>
>>I was expecting the second example to be
>>
>>SELECT 1111 & 111 = 111
>>
>>
>
>In the above examples the numbers are decimal values.
>
>Maybe you wanted to do something like the following:
>
>area=> select b'1111' & b'0111';
> ?column?
>----------
> 0111
>(1 row)
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster
>
>
>