Answer / sainathraj

FOR ALL ENTRIES is used to replace nested select loops by
operations on internal tables.

Things to be considerd when working with 'for all entries':

1)Make sure that the select contains atleast the primary key
fields

2)IF NOT <ITAB> IS INITIAL. is a mandatory check before FOR
ALL ENTRIES.

Answer / sainathraj

Prerequisites for "FOR ALL ENTRIES"
-----------------------------------
1) Check the higher level internal table having the data or
not. i.e (for eg)
IF not IT_EKKO is inital.

2)sort that internal table

3)delete the adjacent duplicates

4)consider all posssible key combinations in the WHERE condition

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