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 acc_column_spec 

Syntax Rules for Column Descriptions

Syntax

<acc_column_spec> ::= <key_column_spec> | <simple_column_spec>

Use

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'

 

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