Fill dynamic internal table with data from another dynamic table

Hi,

I have a huge dynamic table with a few columns and need to fill another dynamic table with some of the columns, that are also existing in the other one. I first know at runtime, which fields the smaller table contains.

Until now, I did it that way:

  LOOP AT <it_tab_structure> ASSIGNING <wa_tab_structure>.

    LOOP AT lt_comp_full INTO ls_comp_full.

      ASSIGN COMPONENT ls_comp_full-name OF STRUCTURE <structure> TO <column>.

      ASSIGN COMPONENT ls_comp_full-name OF STRUCTURE <wa_tab_structure> TO <value>.

      <column> = <value>.

    ENDLOOP.

    APPEND <structure> TO <table>.

  ENDLOOP.

lt_comp_full contains the columns of the second table, that have to be filled.

This is taking a very long time, as there can be a lot of columns in the source table and the source table contains at least 100000 records.

Is there therefore any way to fill the other table faster?

Thank you & best regards,

Michael