We moved our PostgreSQL database from one hosting provider to another using pgbackrest. In the new environment, some comparison operations were failing. The issue was fixed by running an update. But I am trying to find out what would have happened.
select * from accounts where email = 'someemail@gmail.com'; -- failed for some email ids even though there were records.
select * from accounts where lower(trim(email)) <> email; -- fetched no records.
select * from accounts where email::bytea = 'someemail@gmail.com'::bytea; - worked for those records where comparison was failing.
update accounts set email = trim(lower(email)); -- fixed the issue.
Source database was PG 13.2, target 13.3.
Any suggestions will be appreciated - not sure if other tables/columns are affected.
