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— Statements —

RESET

RESET [INITIAL] operand1

This document covers the following topics:

Function
Syntax Description
Example

For an explanation of the symbols used in the syntax diagram, see Syntax Symbols.

Belongs to Function Group: Arithmetic and Data Movement Operations

Function

The RESET statement is used to reset the value of a field:

RESET (without INITIAL) sets the content of each specified field to its default initial value depending on its format.
RESET INITIAL sets each specified field to the initial value as defined for the field in the DEFINE DATA statement. For a field declared without INIT clause in the DEFINE DATA statement, RESET INITIAL has the same effect as RESET (without INITIAL).

Notes:

A field declared with a CONSTANT clause in the DEFINE DATA statement may not be referenced in a RESET statement, since its content cannot be changed.
In reporting mode, the RESET statement may also be used to define a variable, provided that the program contains no DEFINE DATA LOCAL statement.

Syntax Description

Operand Definition Table:

Operand	Possible Structure					Possible Formats													Referencing Permitted	Dynamic Definition
`operand1`		S	A	G	M	A	U	N	P	I	F	B	D	T	L	C	G	O	yes	yes

Syntax Element Description:

RESET `operand1`	Reset to Null Value: `RESET` (without `INITIAL`) sets the content of each specified field (`operand1`) to its default initial value. If `operand1` is a dynamic variable, it will be reset to a null value with the length the variable currently has at the time the `RESET` statement is executed. The current length of a dynamic variable can be ascertained by using the system variable `*LENGTH`. For general information on dynamic variables, see the section Using Dynamic and Large Variables.
RESET INITIAL `operand1`	Reset to Initial Value: `RESET INITIAL` sets each specified field (`operand1`) to the initial value as defined for the field in the `DEFINE DATA` statement. If you specify no `INIT` value in the `DEFINE DATA` statement, a field will be initialized with a default initial value depending on its format. If a dynamic variable is used, `*LENGTH` is set to zero if no initial value is defined. If you apply `RESET INITIAL` to an array, it must be applied to the entire array (as defined in the `DEFINE DATA` statement); a `RESET INITIAL` of individual array occurrences is not possible. `RESET INITIAL` of fields resulting from a redefinition is not possible either. `RESET INITIAL` is applied to a dynamic variable. `RESET INITIAL` cannot be applied to database fields.

RESET operand1

Reset to Null Value:

RESET (without INITIAL) sets the content of each specified field (operand1) to its default initial value.

If operand1 is a dynamic variable, it will be reset to a null value with the length the variable currently has at the time the RESET statement is executed. The current length of a dynamic variable can be ascertained by using the system variable *LENGTH.

For general information on dynamic variables, see the section Using Dynamic and Large Variables.

RESET INITIAL operand1

Reset to Initial Value:

RESET INITIAL sets each specified field (operand1) to the initial value as defined for the field in the DEFINE DATA statement.

If you specify no INIT value in the DEFINE DATA statement, a field will be initialized with a default initial value depending on its format.
If a dynamic variable is used, *LENGTH is set to zero if no initial value is defined.
If you apply RESET INITIAL to an array, it must be applied to the entire array (as defined in the DEFINE DATA statement); a RESET INITIAL of individual array occurrences is not possible.
RESET INITIAL of fields resulting from a redefinition is not possible either.
RESET INITIAL is applied to a dynamic variable.
RESET INITIAL cannot be applied to database fields.

Example

** Example 'RSTEX1': RESET (with/without INITIAL)                       
************************************************************************
DEFINE DATA LOCAL                                                       
1 EMPLOY-VIEW VIEW OF EMPLOYEES                                         
  2 NAME                                                                
1 #BINARY  (B4) INIT <1>                                           
1 #INTEGER (I4) INIT <5>                                          
1 #NUMERIC (N2) INIT <25>                                          
END-DEFINE                                                              
*                                                                       
LIMIT 1                                                                 
READ EMPLOY-VIEW                                                        
  /*                                                                    
  WRITE NOTITLE 'VALUES BEFORE RESET STATEMENT:'                        
  WRITE / '=' NAME '=' #BINARY '=' #INTEGER '=' #NUMERIC                
  /*                                                                    
  RESET NAME #BINARY #INTEGER #NUMERIC                               
  /*                                                                    
  WRITE /// 'VALUES AFTER  RESET STATEMENT:'                            
  WRITE / '=' NAME '=' #BINARY '=' #INTEGER '=' #NUMERIC                
  /*                                                    
  RESET INITIAL #BINARY #INTEGER #NUMERIC           
  /*                                                    
  WRITE /// 'VALUES AFTER  RESET INITIAL STATEMENT:'    
  WRITE / '=' NAME '=' #BINARY '=' #INTEGER '=' #NUMERIC
  /*                                                    
END-READ                                                
END

Output of Program RSTEX1:

VALUES BEFORE RESET STATEMENT:                                              
                                                                            
NAME: ADAM                 #BINARY: 00000001 #INTEGER:           5 #NUMERIC:
 25                                                                         
                                                                            
                                                                            
                                                                            
VALUES AFTER  RESET STATEMENT:                                              
                                                                            
NAME:                      #BINARY: 00000000 #INTEGER:           0 #NUMERIC:
  0                                                                         
                                                                            
                                                                            
                                                                            
VALUES AFTER  RESET INITIAL STATEMENT:                                      
                                                                            
NAME:                      #BINARY: 00000001 #INTEGER:           5 #NUMERIC:
 25

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