Answer Posted / galla phani kumar

CLEAR ITAB. ---> IT WILL CLEARS THE CONTENTS OF HEADER
LINE OF AN INTERNAL TABLE.
CLEAR ITAB[]. ---> IT WILL REMOVE THE CONTENTS OF AN
INTERNAL TABLE BODY NOT THE HEADER LINE.
CLEAR ITAB[] = REFRESH ITAB.
IN CLEAR AND REFRESH COMMAND THE MEMORY ALLOCATED FOR
INTERNAL TABLE REMAINS THE SAME.
BUT IN FREE ITAB. ---> IT WILL REMOVE THE CONTENTS OF
INTERNAL TABLE BODY AND DEALLOCATE THE MEMORY OF INTERNAL
TABLE BODY.
EVEN AFTER FREE STATEMENT CONTENTS OF INTERNAL TABLE HEADER
LINE REMAINS THE SAME....

REGARDS
GALLA PHANI KUMAR

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