ABAP Select data from SAP table E2LFM2M into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2LFM2M 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 E2LFM2M. 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 E2LFM2M 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_E2LFM2M TYPE STANDARD TABLE OF E2LFM2M,
      WA_E2LFM2M TYPE E2LFM2M,
      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: <E2LFM2M> TYPE E2LFM2M.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2LFM2M.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2LFM2M
  INTO TABLE IT_E2LFM2M.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2LFM2M
*  INTO TABLE @DATA(IT_E2LFM2M2).
*--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_E2LFM2M INDEX 1 INTO DATA(WA_E2LFM2M2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2LFM2M ASSIGNING <E2LFM2M>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2LFM2M>-MSGFN = 1.
<E2LFM2M>-LIFNR = 1.
<E2LFM2M>-EKORG = 1.
<E2LFM2M>-LTSNR = 1.
<E2LFM2M>-WERKS = 1.

ENDLOOP.

LOOP AT IT_E2LFM2M INTO WA_E2LFM2M.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2LFM2M-ERDAT, sy-vline,
  WA_E2LFM2M-ERNAM, sy-vline,
  WA_E2LFM2M-SPERM, sy-vline,
  WA_E2LFM2M-LOEVM, sy-vline,
  WA_E2LFM2M-LFABC, sy-vline,
  WA_E2LFM2M-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2LFM2M 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_E2LFM2M 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_E2LFM2M INTO WA_E2LFM2M.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2LFM2M-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2LFM2M-LIFNR.
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_E2LFM2M_STR, 
MSGFN TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
LTSNR TYPE STRING,
WERKS TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
SPERM TYPE STRING,
LOEVM TYPE STRING,
LFABC TYPE STRING,
WAERS TYPE STRING,
VERKF TYPE STRING,
TELF1 TYPE STRING,
MINBW TYPE STRING,
ZTERM TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
WEBRE TYPE STRING,
KZABS TYPE STRING,
KALSK TYPE STRING,
KZAUT TYPE STRING,
EXPVZ TYPE STRING,
ZOLLA TYPE STRING,
MEPRF TYPE STRING,
EKGRP TYPE STRING,
BOLRE TYPE STRING,
UMSAE TYPE STRING,
XERSY TYPE STRING,
PLIFZ TYPE STRING,
MRPPP TYPE STRING,
LFRHY TYPE STRING,
LIEFR TYPE STRING,
LIBES TYPE STRING,
LIPRE TYPE STRING,
LISER TYPE STRING,
DISPO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2LFM2M_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_E2LFM2M_STR-MSGFN sy-vline 
WA_E2LFM2M_STR-LIFNR sy-vline 
WA_E2LFM2M_STR-EKORG sy-vline 
WA_E2LFM2M_STR-LTSNR sy-vline 
WA_E2LFM2M_STR-WERKS sy-vline 
WA_E2LFM2M_STR-ERDAT sy-vline 
WA_E2LFM2M_STR-ERNAM sy-vline 
WA_E2LFM2M_STR-SPERM sy-vline 
WA_E2LFM2M_STR-LOEVM sy-vline 
WA_E2LFM2M_STR-LFABC sy-vline 
WA_E2LFM2M_STR-WAERS sy-vline 
WA_E2LFM2M_STR-VERKF sy-vline 
WA_E2LFM2M_STR-TELF1 sy-vline 
WA_E2LFM2M_STR-MINBW sy-vline 
WA_E2LFM2M_STR-ZTERM sy-vline 
WA_E2LFM2M_STR-INCO1 sy-vline 
WA_E2LFM2M_STR-INCO2 sy-vline 
WA_E2LFM2M_STR-WEBRE sy-vline 
WA_E2LFM2M_STR-KZABS sy-vline 
WA_E2LFM2M_STR-KALSK sy-vline 
WA_E2LFM2M_STR-KZAUT sy-vline 
WA_E2LFM2M_STR-EXPVZ sy-vline 
WA_E2LFM2M_STR-ZOLLA sy-vline 
WA_E2LFM2M_STR-MEPRF sy-vline 
WA_E2LFM2M_STR-EKGRP sy-vline 
WA_E2LFM2M_STR-BOLRE sy-vline 
WA_E2LFM2M_STR-UMSAE sy-vline 
WA_E2LFM2M_STR-XERSY sy-vline 
WA_E2LFM2M_STR-PLIFZ sy-vline 
WA_E2LFM2M_STR-MRPPP sy-vline 
WA_E2LFM2M_STR-LFRHY sy-vline 
WA_E2LFM2M_STR-LIEFR sy-vline 
WA_E2LFM2M_STR-LIBES sy-vline 
WA_E2LFM2M_STR-LIPRE sy-vline 
WA_E2LFM2M_STR-LISER sy-vline 
WA_E2LFM2M_STR-DISPO sy-vline      INTO ld_text SEPARATED BY SPACE.

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