SAP LOGEXP INITIAL documentation, setup help and example usage

ARTICLE

rel_exp - IS INITIAL

Syntax
ABAP_KEY ... operand IS [NOT] INITIAL ...

Effect
This predicate expression checks whether the operand operand is initial. The expression is true, if the operand contains its type-specific initial value . Any data objects can be specified for operand . This is an extended functional operand position in which, alongside
functional method calls ,
constructor expressions , or table expressions , certain predefined functions can also be specified.
With the addition NOT , the expression is true if the operand contains a value other than its type-specific initial value

Notes

Calculation expressions cannot be specified for operand .

It is possible, but not recommended, to specified certain predefined functions as operand . For example, instead of

strlen( ... ) IS INITIAL
it is better to use the following comparison:
strlen( ... ) = 0

Example
The logical expression in the IF statement is true if the internal table in the SELECT statement was filled with rows.
DATA spfli_tab TYPE TABLE OF spfli.
...
CLEAR spfli_tab.
SELECT *
FROM spfli
INTO TABLE spfli_tab
WHERE ...

IF spfli_tab IS NOT INITIAL.
...
ENDIF.

Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved