SAP ABAP Have a routine that receives an internal table (with at least three columns) and the sort it by its first column.

Solution:
REPORT z_abap101_070.
TYPES: BEGIN OF ty_person,
id TYPE n LENGTH 8,
name TYPE c LENGTH 20,
age TYPE i,
END OF ty_person,
tt_people TYPE TABLE OF ty_person WITH KEY id.
DATA it_people TYPE tt_people.
FORM sort_1st_column CHANGING ch_itab_people TYPE tt_people.
SORT ch_itab_people BY id ASCENDING.
ENDFORM. "sort_1st_column
START-OF-SELECTION.
* Populating the internal table WITHOUT HEADER LINE (hat)
DATA wa_person TYPE ty_person.
wa_person-id = 3.
wa_person-name = 'The One'.
wa_person-age = 30.
APPEND wa_person TO it_people.
wa_person-id = 2.
wa_person-name = 'Bob'.
wa_person-age = 20.
APPEND wa_person TO it_people.
wa_person-id = 1.
wa_person-name = 'Mary'.
wa_person-age = 10.
APPEND wa_person TO it_people.
wa_person-id = 5.
wa_person-name = 'Chris'.
wa_person-age = 50.
APPEND wa_person TO it_people.
wa_person-id = 4.
wa_person-name = 'Janet'.
wa_person-age = 40.
APPEND wa_person TO it_people.
WRITE 'Before SORT'. NEW-LINE.
LOOP AT it_people INTO wa_person.
WRITE: wa_person-id, wa_person-name, wa_person-age.
NEW-LINE.
ENDLOOP.
PERFORM sort_1st_column
CHANGING
it_people.
WRITE 'After SORT'. NEW-LINE.
LOOP AT it_people INTO wa_person.
WRITE: wa_person-id, wa_person-name, wa_person-age.
NEW-LINE.
ENDLOOP.




Serkan AKKAVAK
Computer Engineer
ABAP Developer & SAP S/4 HANA Logistics Consultant
Contact : serkurumsal@yandex.com