Good afternoon,
A question about varchar(1) and char(1).
If we have two tables
test1 (col1 varchar(1), ... ... );
test2 (col1 char(1), ... ... );
In the manuall, it written:
*Tip: * There are no performance differences between these three types,
apart from the increased storage size when using the blank-padded type.
While character(/n/) has performance advantages in some other database
systems, it has no such advantages in PostgreSQL. In most situations
text or character varying should be used instead.
As a result, setup 'col1' to either "varchar(1)" or "char(1)" does not
matter at all?
Thanks a lot,
Emi
