Answer / lokesh

The driver Internal table 0r First internal Table Must have
records in it , if u use For All Entries . If the First
Internal table is initial (means no records in it) then the
For All entries will fetch all the records from the DB
table , which can be real perfromance Issue.
so before making a 'For all entries" for a table make a
check that its not empty.
eg. code :
select matnr werks from marc
into table t_marc
where matnr = p_matnr.

if t_marc is not initial.

select matnr mbrsh meins matkl from mara
into table t_mara
for all entries in t_marc
where matnr = t_marc-matnr.

else.
write : / 'No data was fetch by t_marc'.
endif.

Answer / kumar

If you use for all entries statement and if the internal
table which u r using for all entries it will retrieve all
the records from the table which you are using in select
query

Answer / siddharth samal

IF THE 1ST TABLE IS INITIAL THEN THE PROGRAM WILL SHOW DUMP
ERROR COZ ITS MANDATORY THAT THE 1ST TABLE SHOULD HAVE
VALUE.

Answer / babita

If we don't check for intial condition for table 1 and its
is blank, all the records of second table will be displayed.
Hence it is a good practice to always check for following
before using 'FOR ALL ENTRIES'

if not itab1[] is intial.

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