Re: concatenate question

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От Andreas Kretschmer
Тема Re: concatenate question
Дата
Msg-id 20101211134259.GA12385@tux
обсуждение исходный текст
Ответ на concatenate question  (Tony Capobianco <tcapobianco@prospectiv.com>)
Список pgsql-sql
Tony Capobianco <tcapobianco@prospectiv.com> wrote:

> Here's my table:
> 
> plsql_dw=# \d tmpsv_parent_master
>            Table "staging.tmpsv_parent_master"
> 
> Why won't this work?
> plsql_dw=# select memberid || addeddate from tmpsv_parent_master limit
> 10;
> ERROR:  operator does not exist: numeric || timestamp without time zone
> LINE 1: select memberid || addeddate from tmpsv_parent_master limit ...
>                         ^
> HINT:  No operator matches the given name and argument type(s). You
> might need to add explicit type casts.

You can read? ;-)

You have to CAST the INT and the TIMESTAMP both into a STRING-typ, for
instance:

test=*# select 1::int || now()::timestamp;
ERROR:  operator does not exist: integer || timestamp without time zone
ZEILE 1: select 1::int || now()::timestamp;                      ^
TIP:  No operator matches the given name and argument type(s). You might need to add explicit type casts.
test=!# rollback;
ROLLBACK
Zeit: 0,124 ms
test=# select 1::text || now()::text;           ?column?
--------------------------------12010-12-11 14:42:12.571931+01
(1 Zeile)



Andreas
-- 
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unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."   (unknown)
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