column_id 

Syntax

<column_id> ::= <valCOLUMN_NAME> | <valCOLUMN_ID>

valCOLUMN_NAME

Column name
Specify it according to the SQL conventions. It can also contain the table name as a prefix (for example, CUSTOMER.CNO).

valCOLUMN_ID

Column ID

Use

This is a syntax rule for describing columns.

You use it in a command for unloading data to assign a column in the source file to a data field in the target table.

DATAEXTRACT cno, last name, zip, place FROM customer
OUTFIELDS
  cno       01-04
  last name 
06-12
  zip       
14-18
  place     
20-31
OUTFILE 'customer.data' FORMATTED

The column number valCOLUMN_ID indicates the position of the column in the SELECT statement.

DATAEXTRACT cno, last name, zip, place FROM customer
OUTFIELDS
  1 01-04
  2 
06-12
  3  
14-18
  4 
20-31
OUTFILE 'customer.data' FORMATTED