Fastest was to insert entries fr ITAB1 into hashed ITAB2

Howdy,
what is the fastest way to move entires from a standard ITAB1 into a ITAB2 of type hashed?
Also, what about when ITAB2 has been passed as method parameter in the format <fs_ITAB2> of type any ?
Important: before the insert ITAB2 already contains entries which must be preserved (thereby disqualifies squarebrackets=squarebrackets )
Thanks for any answers.

if your table itab2 exists already and has entries, then you don't have much freedom about the type, or?
A hashed table is a questionable choice, do the old entries fulfill the uniqueness of the key fields?
The COLLECT is a special solution, it sums p the numeric values of lines with same key. Perfect it required, but do you want that?
The default choice is a sorted table with non-unique key.
And if you must use a standard table, then you must manully optimize it, if it must be sorted afterwards.
Overall, if the result is only used in LOOPs, and no fast reads are required, then the
APPEND LINES .... is the fastest solution.
Siegfried

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