Thanks Joe,
Here is my next question.
create table test_a (b bit(3));
create view test_vw (b1, b2, b3)
as select
to_number(substring(b,1,1)::int,'9') as b1,
to_number(substring(b,2,1)::int,'9') as b2,
to_number(substring(b,3,1)::int,'9') as b3 from test_a;
create or replace rule test_a_ins as on insert to test_vw
do instead
insert into test_a (b) values (COALESCE(new.b1::bit,'1')||COALESCE(new.b2::bit,'0')||COALESCE(new.b3::bit,'0')::bit);
ERROR: cannot cast type numeric to bit
How will I resolve this?
Regards
skarthi
> Date: Wed, 11 Apr 2007 17:44:01 -0400
> From: dev@xxxxxxxxxxxxxxxxx
> Subject: Re: [ADMIN] [SQL] Urgent help in bit_string data type
> To: skarthi98@xxxxxxxxxxx
> CC: pgsql-admin@xxxxxxxxxxxxxx; pgsql-sql@xxxxxxxxxxxxxx
>
> Hi skarthi,
>
> On Wed, 2007-04-11 at 13:30 -0700, Karthikeyan Sundaram wrote:
> > insert into test_a values (to_char(1,'9'));
> >
> > ERROR: column "b" is of type bit but _expression_ is of type
> > text
> > HINT: You will need to rewrite or cast the _expression_.
>
> As suggested by the error, you should use a cast, e.g.,
>
> insert into test_a values 9::bit(3);
>
> This will result in binary '001' being inserted because you need 4 bits
> to represent decimal 9.
>
> Joe
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 6: explain analyze is your friend
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