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type cast about int to bit - Mailing list pgsql-sql

From	zoulx1982
Subject	type cast about int to bit
Date	February 6, 2012 07:46:50
Msg-id	18656bf8.13415.13551499b55.Coremail.zoulx1982@163.com Whole thread Raw
Responses	Re: type cast about int to bit (Adrian Klaver <adrian.klaver@gmail.com>)
List	pgsql-sql

hi，

there is a problem about type cast that i don't understand, follow is my test.

postgres=# select 10::bit(3);
bit
-----
010
(1 row)

postgres=# select 10::bit varying(3);
ERROR: cannot cast type integer to bit varying
LINE 1: select 10::bit varying(3);
^
postgres=#

my question is why int can cast to bit , i want to know the reason.

thank you for your timing.

From: Achilleas Mantzios
Date: 06 February 2012, 07:43:00
Subject: Re: array dimensions, pg_catalog.pg_attribute and the \d command

From: Jasen Betts
Date: 06 February 2012, 10:45:19
Subject: Re: type cast about int to bit