problem with arrays

Hi,

I'm trying to convert some tables from version 6.2 to 6.4.2 but I have
problems with arrays. The old table definition was:

create table a (
x int4,
y char8,
z char8[]
);

Now, because the char8 datatype has been removed from postgres, I suppose
I should use char(8) or varchar(8):

create table a (
x int4,
y char(8),
z char(8)[]
);

or

create table a (
x int4,
y varchar(8),
z varchar(8)[]
);

but when I try the above definitions I get the following errors:

dz=> create table a (
dz-> x int4,
dz-> y char(8),
dz-> z char(8)[]
dz-> );
ERROR: type name lookup of _bpchar failed

dz=> create table a (
dz-> x int4,
dz-> y varchar(8),
dz-> z varchar(8)[]
dz-> );
ERROR: type name lookup of _varchar failed

Also trying to define the _varchar or _bpchar types fails, so it seems that
the conversion from 6.2 to 6.4 is not possible for many data types.
Any suggestion?

--
Massimo Dal Zotto

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