ABAP Select data from SAP table COMES_S_DRF_PLAF_FILT_ALL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COMES_S_DRF_PLAF_FILT_ALL table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to COMES_S_DRF_PLAF_FILT_ALL. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the COMES_S_DRF_PLAF_FILT_ALL table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_COMES_S_DRF_PLAF_FILT_ALL TYPE STANDARD TABLE OF COMES_S_DRF_PLAF_FILT_ALL,
      WA_COMES_S_DRF_PLAF_FILT_ALL TYPE COMES_S_DRF_PLAF_FILT_ALL,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <COMES_S_DRF_PLAF_FILT_ALL> TYPE COMES_S_DRF_PLAF_FILT_ALL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_COMES_S_DRF_PLAF_FILT_ALL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM COMES_S_DRF_PLAF_FILT_ALL
  INTO TABLE IT_COMES_S_DRF_PLAF_FILT_ALL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMES_S_DRF_PLAF_FILT_ALL
*  INTO TABLE @DATA(IT_COMES_S_DRF_PLAF_FILT_ALL2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_COMES_S_DRF_PLAF_FILT_ALL INDEX 1 INTO DATA(WA_COMES_S_DRF_PLAF_FILT_ALL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_COMES_S_DRF_PLAF_FILT_ALL ASSIGNING <COMES_S_DRF_PLAF_FILT_ALL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMES_S_DRF_PLAF_FILT_ALL>-PLNUM = 1.
<COMES_S_DRF_PLAF_FILT_ALL>-MATNR = 1.
<COMES_S_DRF_PLAF_FILT_ALL>-PWWRK = 1.
<COMES_S_DRF_PLAF_FILT_ALL>-VERID = 1.
<COMES_S_DRF_PLAF_FILT_ALL>-PLGRP = 1.

ENDLOOP.

LOOP AT IT_COMES_S_DRF_PLAF_FILT_ALL INTO WA_COMES_S_DRF_PLAF_FILT_ALL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMES_S_DRF_PLAF_FILT_ALL-MTART, sy-vline,
  WA_COMES_S_DRF_PLAF_FILT_ALL-MATKL, sy-vline,
  WA_COMES_S_DRF_PLAF_FILT_ALL-DISMM, sy-vline,
  WA_COMES_S_DRF_PLAF_FILT_ALL-DISPO, sy-vline,
  WA_COMES_S_DRF_PLAF_FILT_ALL-KAPFX, sy-vline,
  WA_COMES_S_DRF_PLAF_FILT_ALL-REMFL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMES_S_DRF_PLAF_FILT_ALL you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_COMES_S_DRF_PLAF_FILT_ALL TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_COMES_S_DRF_PLAF_FILT_ALL INTO WA_COMES_S_DRF_PLAF_FILT_ALL.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COMES_S_DRF_PLAF_FILT_ALL-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMES_S_DRF_PLAF_FILT_ALL-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COMES_S_DRF_PLAF_FILT_ALL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMES_S_DRF_PLAF_FILT_ALL-MATNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_COMES_S_DRF_PLAF_FILT_ALL_STR, 
PLNUM TYPE STRING,
MATNR TYPE STRING,
PWWRK TYPE STRING,
VERID TYPE STRING,
PLGRP TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
DISMM TYPE STRING,
DISPO TYPE STRING,
KAPFX TYPE STRING,
REMFL TYPE STRING,
UMSKZ TYPE STRING,
KBNKZ TYPE STRING,
PERTR TYPE STRING,
MEDKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMES_S_DRF_PLAF_FILT_ALL_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-PLNUM sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-MATNR sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-PWWRK sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-VERID sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-PLGRP sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-MTART sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-MATKL sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-DISMM sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-DISPO sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-KAPFX sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-REMFL sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-UMSKZ sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-KBNKZ sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-PERTR sy-vline 
WA_COMES_S_DRF_PLAF_FILT_ALL_STR-MEDKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.