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Section for use
All
Syntax
CLEAR n
Description
Clears the subfile before loading.
This instruction resets the subfile fields (actual and hidden fields) to blank or zero, and sets all associated indicators to OFF.
n is the number of the subfile concerned; it is the number which follows the asterisk (*) in the layout format code.
Examples:
1 for *1
4 for *4
This instruction mainly appears in the INITIALIZATION block, before the " MANAGE_SFL n" instruction.
Example
**********************
INITIALIZATION 01
**********************
CHAIN ORDERS
PRESENT ORDERS
*
CLEAR 1
MANAGE_SFL 1
PRESENT ORDER_LINES
UPD_SFL
END_MANAGE_SFL
*
**********************
INITIALIZATION 02
**********************
*
* subfile nbr 2: invoices
CLEAR 2
MANAGE_SFL 2
PRESENT CUST_INVOICES
UPD_SFL
END_MANAGE_SFL
*
* subfile nbr 3: non assigned payments
CLEAR 3
MANAGE_SFL 3
PRESENT CUST_PAYMENTS
CHAIN PAYMENT_TABLE
PRESENT PAYMENT_TABLE
UPD_SFL
END_MANAGE_SFL
See also the list of 4GL instructions by topic