Re: Change column type macaddr to macaddr[]

["David G. Johnston" <david.g.johnston@xxxxxxxxx>]

On Saturday, December 30, 2017, Ertan Küçükoğlu <ertan.kucukoglu@xxxxxxxxxxx> wrote:
> Hello,
>
> I am using PostgreSQL 9.6.6 on armv8l-unknown-linux-gnueabihf, compiled by
> gcc (Raspbian 6.3.0-18+rpi1) 6.3.0 20170516, 32-bit
>
> I have a table with column name mac type macaddr. I need to change it into
> array of macaddr ( macaddr[] ) type. Among all others I did try below:
>
> licenses=# alter table licreqm alter column mac type macaddr[] using
> mac::macaddr[];
> ERROR:  cannot cast type macaddr to macaddr[]
> LINE 1: ... licreqm alter column mac type macaddr[] using mac::macaddr[...
>                                                              ^
> I believe there should be a way, I just do not know it myself. Anyone can
> help me?

Maybe try:

Using array[mac]::macaddr[]

David J.