The USING phrase basically answers the question how do I convert an existing value of the old type to the new type.
On Wed, Jul 3, 2024 at 4:03 PM Rich Shepard <rshepard@xxxxxxxxxxxxxxx> wrote:
On Wed, 3 Jul 2024, Rich Shepard wrote:
> What I've tried:
> bustrac=# alter table people alter column email set data type varchar(64) [];
> ERROR: column "email" cannot be cast automatically to type character
> varying[]
> HINT: You might need to specify "USING email::character varying(64)[]".
What I forgot to mention is that the current datatype is varchar(64) and I
want to make it an array.
Rich
