List SAP Table Fields and Properties using ABAP Function Module
SAP programmers especially using dynamic programming features of ABAP can use DDIF_NAMETAB_GET function module to list table columns and get field properties of a SAP database table.
Following ABAP code fetches SAP table properties for requested table and returns data in a table.
field-symbols <dfies> type dfies
data pp_tabname LIKE dfies-tabname.
data pt_dfies TYPE tt_dfies.
data lr_dataelement type ref to cl_abap_elemdescr.
pp_tabname = 'T001'.
call function 'DDIF_NAMETAB_GET'
exporting
tabname = pp_tabname
tables
dfies_tab = pt_dfies
exceptions
not_found = 1
others = 99.
It is possible for ABAP developers to get missing information about the table field name from data element information by calling ABAP class method cl_abap_typedescr=>describe_by_name( )
if sy-subrc = 0 and not pt_dfies[] is initial.
loop at pt_dfies assigning <dfies> where rollname is not initial.
clear: lr_dataelement, lwa_dfies.
lr_dataelement ?= cl_abap_typedescr=>describe_by_name( <dfies>-rollname ).
" Data element (semantic domain)
lwa_dfies = lr_dataelement->get_ddic_field( ).
<dfies>-scrtext_s = lwa_dfies-scrtext_s.
<dfies>-scrtext_m = lwa_dfies-scrtext_m.
<dfies>-scrtext_l = lwa_dfies-scrtext_l.
endloop.
endif.
