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varchar vs char

what's the difference of the two data types?
Nov 12 '05
10 71131
As Serge and Knut have said, VARCHAR only uses the space as defined in
the length when the data is inserted. Therefore the row length can be
different depending on the amount of data in the VARCHAR columns.

Each VARCHAR has a 2-byte overhead to store the length (a smallint is
used to store the length). Works exactly the same way in DB2 for z/OS
as it does for DB2 for LUW.
Nov 12 '05 #11

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