Syntax Rules for Column Descriptions
<acc_column_spec> ::= <key_column_spec> | <simple_column_spec>
Use this syntax rule in a DATAUPDATE command to define whether the qualification columns are key columns or non-key columns of the target table.
If you use key columns as qualification columns (key_column_spec), each data record in the data stream updates that line in the target table that matches the specified key.
DATAUPDATE TABLE customer
KEY cno 01-04
SET city 05-16
INSTREAM 'customer.data' FORMATTED
If you use non-key columns as qualification columns (simple_column_spec), each data record in the source file updates each line in the target table that is identified with the value(s) of the qualification column(s).
DATAUPDATE TABLE customer
city 1
SET zip 2
INSTREAM 'customer.data'