Re: matching a timestamp field

BACHELART PIERRE (CIS/SCC) <pierre(dot)bachelart(at)belgacom(dot)be> wrote:

> Hello,
>
>
>
>
>
> Why is my sql below accepted in 8.1.19 and refused in 8.4.9 ???
>
> Welcome to psql 8.1.19, the PostgreSQL interactive terminal.
>
> ansroc=# select * from s12hwdb where record ~'2012-09-20' limit 5;
>
>
> psql (8.4.9)
>
>
> ERROR: operator does not exist: timestamp without time zone ~ unknown
>
> LINE 1: select * from s12hwdb where record ~'2012-09-20' limit 5;
>

Because of the dropped implicid casts since IIRC 8.2.

You have to rewrite your query to:

select * from s12hwdb where record::date = '2012-09-20'::date limit 5;

(assuming record is a TIMESTAMP-Field)

Short example:

test=# select now() ~ '2012-09-22';
ERROR: operator does not exist: timestamp with time zone ~ unknown
LINE 1: select now() ~ '2012-09-22';
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
Time: 0,156 ms
test=!# rollback;
ROLLBACK
Time: 0,079 ms
test=# select now()::date = '2012-09-22'::date;
?column?
----------
t
(1 row)

Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect. (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly." (unknown)
Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°