In response to Steve Clark :
> Hello List,
>
> I want to change some columns in a database
> that were originally created as char varying to
> inet.
>
> When I try I get an error. Is there anyway to work
> around this?
>
> See below for table definition.
>
> Table "public.kernel_gre"
> Column | Type | Modifiers
> -----------------+-----------------------+---------------
> interface | character varying(15) | not null
> source_ip | character varying(16) |
> dest_ip | character varying(16) |
> physical_ip | character varying(16) |
> status | boolean | default false
> physical_src_ip | character varying(16) |
> tunnel_netmask | character varying(16) |
> key | character varying(32) |
> state | boolean | default false
> broadcast | boolean | default false
>
> alter TABLE kernel_gre ALTER COLUMN source_ip TYPE inet;
> ERROR: column "source_ip" cannot be cast to type "inet"
Try this with explicet cast:
test=# create table ip (ip text);
CREATE TABLE
Zeit: 247,763 ms
test=*# copy ip from stdin;
Geben Sie die zu kopierenden Daten ein, gefolgt von einem Zeilenende.
Beenden Sie mit einem Backslash und einem Punkt alleine auf einer Zeile.
>> 127.0.0.1
>> \.
Zeit: 5199,184 ms
test=*# alter table ip alter column ip type inet using ip::inet;
ALTER TABLE
Zeit: 242,569 ms
test=*# \d ip
Tabelle »public.ip«
Spalte | Typ | Attribute
--------+------+-----------
ip | inet |
test=*#
Regards, Andreas
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Andreas Kretschmer
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