| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Lou <lou(at)dayspringpublisher(dot)com> |
| Cc: | "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Converting yes or no to one letter strings. |
| Date: | 2019-06-04 23:23:32 |
| Message-ID: | CAKFQuwapnGz0fQP-ZE-coP190vv_NfFWJK+f6NyneFOqH-YP2g@mail.gmail.com |
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| Lists: | pgsql-general |
On Tue, Jun 4, 2019 at 3:30 PM Lou <lou(at)dayspringpublisher(dot)com> wrote:
> Is it possible to convert a boolean yes or no field to hold a one letter
> string? For example, the strings: 's' 'f' 'p' 'e'
>
Something like the following should work:
ALTER TABLE ... ALTER COLUMN ... TYPE text USING (CASE WHEN ... THEN 's'
ELSE 'f' END);
https://www.postgresql.org/docs/11/sql-altertable.html
Though at this point you are probably better off creating a category table
with a primary key and converting this column to be a foreign key.
David J.
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