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From: Rich Shepard <[email protected]>
To: [email protected] <[email protected]>
Subject: Re: Accommodating alternative column values
Date: Wed, 3 Jul 2024 07:13:47 -0700 (PDT)
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAKFQuwYGP6geSx61RUuvH07D+CDHWOiZNXi+WpB3U=QJ7h_Dgg@mail.gmail.com>
References: <[email protected]>
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On Wed, 3 Jul 2024, David G. Johnston wrote:

> Yeah, the simply cast suggested will not work. You’d have to apply an
> expression that turns the current contents into an array. The current
> contents are not likely to be an array literal.

David,

No, it's not now an array.

I thought that this expression would work, but it doesn't:
bustrac=# alter table people alter column email set data type varchar(64)[] using email::varchar(64)[];
RROR:  malformed array literal: "[email protected]"
DETAIL:  Array value must start with "{" or dimension information.

If I correctly understand the error detail I'd need to change the contents
of that column for all 1280 rows to enclose the contents in curly braces
before I can convert the datatype to an array. Is that correct?

Rich

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