On Mar 18, 9:18 am, Gordon <gordon.mc...@xxxxxxxxxxxx> wrote: > I'm currently refactoring a database that somebody else designed. > When the database was designed he used character columns with a length > of 1 char to represent some values that really should have been > represented as booleans. He used 'y' for true and 'n' for false. > > I want to cast these columns into the correct type, because you could > in theory set the columns in question to any single character value. > I don't seem to be able to do so, however, the database keeps claiming > that the cast cannot be done. > > I tried casting the columns in question to character varying and then > changing all the 'y's to 'TRUE's, and all the 'n's to 'FALSE's. This > wasn't a problem. But casting from this format to boolean still gives > an error. > > Does anybody know how to do this? Have yout tried ALTER TABLE foo ALTER col TYPE boolean USING CASE WHEN col = 'y' THEN true WHEN column = 'n' then FALSE END; -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
