Simplest way to delete a row - abap

Question

Is there any simplest/fastest way for below code:
DATA: lv_knuma_ag LIKE STANDARD TABLE OF zta_fg_hdr WITH HEADER LINE.
RANGES: lr_knuma_ag FOR zta_fg_hdr-knuma_ag.
"Select `knuma_ag` and save it to internal table `lv_knuma_ag`
LOOP AT li_promo.
SELECT dest~knuma_ag
FROM zta_fg_dest AS dest
INNER JOIN zta_s_d_xkunnr AS xkunnr ON xkunnr~zcd_dest EQ dest~zcd_dest
APPENDING CORRESPONDING FIELDS OF TABLE lv_knuma_ag
WHERE dest~knuma_ag EQ li_promo-knuma_ag
AND xkunnr~xkunnr EQ gi_vl-vkbur.
ENDLOOP.
"Insert `lv_knuma_ag` onto ranges table `lr_knuma_ag`
LOOP AT lv_knuma_ag.
lr_knuma_ag-sign = 'I'.
lr_knuma_ag-option = 'EQ'.
lr_knuma_ag-low = lv_knuma_ag-knuma_ag.
lr_knuma_ag-high = space.
APPEND lr_knuma_ag.
ENDLOOP.
"Delete row in `li_promo` where `knuma_ag` is in ranges table `lr_knuma_ag`
IF NOT lr_knuma_ag IS INITIAL.
DELETE li_promo WHERE knuma_ag IN lr_knuma_ag.
ENDIF.
As you see on the code, it contains twice loop to only fill the ranges table. I would like to make it only one, is it possible? Thanks.

Answer 1

Yes, it should be possible to achieve this without flooding your DBMS with possibly thousands of queries:
DATA: lt_knuma_ag_hash TYPE HASHED TABLE OF insert_type_of_knuma_ag_here WITH UNIQUE KEY TABLE_table_line.
IF li_promo[] IS NOT INITIAL.
SELECT DISTINCT knuma_ag
FROM zta_fg_dest
INTO TABLE lt_knuma_ag_hash
FOR ALL ENTRIES IN li_promo
WHERE knuma_ag = li_promo-knuma_ag.
ENDIF.
LOOP AT li_promo ASSIGNING <li_promo>.
READ TABLE lt_knuma_ag_hash TRANSPORTING NO FIELDS WITH TABLE KEY table_line = <li_promo>-knuma_ag.
IF sy-subrc = 0.
DELETE li_promo.
ENDIF.
ENDLOOP.