Lisa,
The only reason for a space in a char(1) would be if it were inserted
explicitly.
Inserting a NULL into a char column does not result in any padding.
That said, I don't see any problem with varchar2(1), other than the extra
1 or 2 bytes ( can't remember which ) that are used in the header.
Jared
YTTRI Lisa <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
06/05/2002 08:53 AM
Please respond to ORACLE-L
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Subject: char vs. varchar in a data warehouse
Hi -
We are in the process of building a data warehouse and data stores. This
will be built on a Sun Solaris (2.8) machine running Oracle 9i R1.
Estimates are approximately 180GB.
The developers have defined most of their small character fields as
varchar2
- even the ones of size 1! They tell me that if the column does not have
a
value, they do not want to have to deal with a 'space' when manipulating
that value.
Does this make sense? Should I be pursuing this further or shouldn't I
care
as the DBA?
Lisa
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