ABAP Select data from SAP table MASS_LFM2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MASS_LFM2 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 MASS_LFM2. 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 MASS_LFM2 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_MASS_LFM2 TYPE STANDARD TABLE OF MASS_LFM2,
      WA_MASS_LFM2 TYPE MASS_LFM2,
      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: <MASS_LFM2> TYPE MASS_LFM2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MASS_LFM2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MASS_LFM2
  INTO TABLE IT_MASS_LFM2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MASS_LFM2
*  INTO TABLE @DATA(IT_MASS_LFM22).
*--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_MASS_LFM2 INDEX 1 INTO DATA(WA_MASS_LFM22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MASS_LFM2 ASSIGNING <MASS_LFM2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MASS_LFM2>-MANDT = 1.
<MASS_LFM2>-LIFNR = 1.
<MASS_LFM2>-EKORG = 1.
<MASS_LFM2>-LTSNR = 1.
<MASS_LFM2>-WERKS = 1.

ENDLOOP.

LOOP AT IT_MASS_LFM2 INTO WA_MASS_LFM2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MASS_LFM2-ERDAT, sy-vline,
  WA_MASS_LFM2-ERNAM, sy-vline,
  WA_MASS_LFM2-SPERM, sy-vline,
  WA_MASS_LFM2-LOEVM, sy-vline,
  WA_MASS_LFM2-LFABC, sy-vline,
  WA_MASS_LFM2-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MASS_LFM2 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_MASS_LFM2 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_MASS_LFM2 INTO WA_MASS_LFM2.


*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_MASS_LFM2-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MASS_LFM2-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR_OL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MASS_LFM2-LIFNR_OL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MASS_LFM2-LIFNR_OL.
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_MASS_LFM2_STR, 
MANDT 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,
XERSY TYPE STRING,
PLIFZ TYPE STRING,
MRPPP TYPE STRING,
LFRHY TYPE STRING,
LIBES TYPE STRING,
LIPRE TYPE STRING,
LISER TYPE STRING,
INCOV TYPE STRING,
INCO2_L TYPE STRING,
INCO3_L TYPE STRING,
WEORA TYPE STRING,
DISPO TYPE STRING,
BOIND TYPE STRING,
BSTAE TYPE STRING,
RDPRF TYPE STRING,
MEGRU TYPE STRING,
BOPNR TYPE STRING,
XERSR TYPE STRING,
ABUEB TYPE STRING,
PAPRF TYPE STRING,
XNBWY TYPE STRING,
LEBRE TYPE STRING,
BOLRE TYPE STRING,
UMSAE TYPE STRING,
UPPRS TYPE STRING,
TRANSPORT_CHAIN TYPE STRING,
STAGING_TIME TYPE STRING,
FLAG_REFERENCE TYPE STRING,
FLAG_NO_REFERENCE TYPE STRING,
FLAG_DEL_RECORD TYPE STRING,
CPT_NEW_RECORD TYPE STRING,
REFERENCE_SITE TYPE STRING,
ICONS TYPE STRING,
PREVIOUS_ICON TYPE STRING,
FOLDER_OPENED TYPE STRING,
COLINFO TYPE STRING,
CELL TYPE STRING,
MANDT_OL TYPE STRING,
LIFNR_OL TYPE STRING,
EKORG_OL TYPE STRING,
LTSNR_OL TYPE STRING,
WERKS_OL TYPE STRING,
ERDAT_OL TYPE STRING,
ERNAM_OL TYPE STRING,
SPERM_OL TYPE STRING,
LOEVM_OL TYPE STRING,
LFABC_OL TYPE STRING,
WAERS_OL TYPE STRING,
VERKF_OL TYPE STRING,
TELF1_OL TYPE STRING,
MINBW_OL TYPE STRING,
ZTERM_OL TYPE STRING,
INCO1_OL TYPE STRING,
INCO2_OL TYPE STRING,
WEBRE_OL TYPE STRING,
KZABS_OL TYPE STRING,
KALSK_OL TYPE STRING,
KZAUT_OL TYPE STRING,
EXPVZ_OL TYPE STRING,
ZOLLA_OL TYPE STRING,
MEPRF_OL TYPE STRING,
EKGRP_OL TYPE STRING,
XERSY_OL TYPE STRING,
PLIFZ_OL TYPE STRING,
MRPPP_OL TYPE STRING,
LFRHY_OL TYPE STRING,
LIBES_OL TYPE STRING,
LIPRE_OL TYPE STRING,
LISER_OL TYPE STRING,
INCOV_OL TYPE STRING,
INCO2_L_OL TYPE STRING,
INCO3_L_OL TYPE STRING,
WEORA_OL TYPE STRING,
DISPO_OL TYPE STRING,
BOIND_OL TYPE STRING,
BSTAE_OL TYPE STRING,
RDPRF_OL TYPE STRING,
MEGRU_OL TYPE STRING,
BOPNR_OL TYPE STRING,
XERSR_OL TYPE STRING,
ABUEB_OL TYPE STRING,
PAPRF_OL TYPE STRING,
XNBWY_OL TYPE STRING,
LEBRE_OL TYPE STRING,
BOLRE_OL TYPE STRING,
UMSAE_OL TYPE STRING,
UPPRS_OL TYPE STRING,
TRANSPORT_CHAIN_OL TYPE STRING,
STAGING_TIME_OL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MASS_LFM2_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_MASS_LFM2_STR-MANDT sy-vline 
WA_MASS_LFM2_STR-LIFNR sy-vline 
WA_MASS_LFM2_STR-EKORG sy-vline 
WA_MASS_LFM2_STR-LTSNR sy-vline 
WA_MASS_LFM2_STR-WERKS sy-vline 
WA_MASS_LFM2_STR-ERDAT sy-vline 
WA_MASS_LFM2_STR-ERNAM sy-vline 
WA_MASS_LFM2_STR-SPERM sy-vline 
WA_MASS_LFM2_STR-LOEVM sy-vline 
WA_MASS_LFM2_STR-LFABC sy-vline 
WA_MASS_LFM2_STR-WAERS sy-vline 
WA_MASS_LFM2_STR-VERKF sy-vline 
WA_MASS_LFM2_STR-TELF1 sy-vline 
WA_MASS_LFM2_STR-MINBW sy-vline 
WA_MASS_LFM2_STR-ZTERM sy-vline 
WA_MASS_LFM2_STR-INCO1 sy-vline 
WA_MASS_LFM2_STR-INCO2 sy-vline 
WA_MASS_LFM2_STR-WEBRE sy-vline 
WA_MASS_LFM2_STR-KZABS sy-vline 
WA_MASS_LFM2_STR-KALSK sy-vline 
WA_MASS_LFM2_STR-KZAUT sy-vline 
WA_MASS_LFM2_STR-EXPVZ sy-vline 
WA_MASS_LFM2_STR-ZOLLA sy-vline 
WA_MASS_LFM2_STR-MEPRF sy-vline 
WA_MASS_LFM2_STR-EKGRP sy-vline 
WA_MASS_LFM2_STR-XERSY sy-vline 
WA_MASS_LFM2_STR-PLIFZ sy-vline 
WA_MASS_LFM2_STR-MRPPP sy-vline 
WA_MASS_LFM2_STR-LFRHY sy-vline 
WA_MASS_LFM2_STR-LIBES sy-vline 
WA_MASS_LFM2_STR-LIPRE sy-vline 
WA_MASS_LFM2_STR-LISER sy-vline 
WA_MASS_LFM2_STR-INCOV sy-vline 
WA_MASS_LFM2_STR-INCO2_L sy-vline 
WA_MASS_LFM2_STR-INCO3_L sy-vline 
WA_MASS_LFM2_STR-WEORA sy-vline 
WA_MASS_LFM2_STR-DISPO sy-vline 
WA_MASS_LFM2_STR-BOIND sy-vline 
WA_MASS_LFM2_STR-BSTAE sy-vline 
WA_MASS_LFM2_STR-RDPRF sy-vline 
WA_MASS_LFM2_STR-MEGRU sy-vline 
WA_MASS_LFM2_STR-BOPNR sy-vline 
WA_MASS_LFM2_STR-XERSR sy-vline 
WA_MASS_LFM2_STR-ABUEB sy-vline 
WA_MASS_LFM2_STR-PAPRF sy-vline 
WA_MASS_LFM2_STR-XNBWY sy-vline 
WA_MASS_LFM2_STR-LEBRE sy-vline 
WA_MASS_LFM2_STR-BOLRE sy-vline 
WA_MASS_LFM2_STR-UMSAE sy-vline 
WA_MASS_LFM2_STR-UPPRS sy-vline 
WA_MASS_LFM2_STR-TRANSPORT_CHAIN sy-vline 
WA_MASS_LFM2_STR-STAGING_TIME sy-vline 
WA_MASS_LFM2_STR-FLAG_REFERENCE sy-vline 
WA_MASS_LFM2_STR-FLAG_NO_REFERENCE sy-vline 
WA_MASS_LFM2_STR-FLAG_DEL_RECORD sy-vline 
WA_MASS_LFM2_STR-CPT_NEW_RECORD sy-vline 
WA_MASS_LFM2_STR-REFERENCE_SITE sy-vline 
WA_MASS_LFM2_STR-ICONS sy-vline 
WA_MASS_LFM2_STR-PREVIOUS_ICON sy-vline 
WA_MASS_LFM2_STR-FOLDER_OPENED sy-vline 
WA_MASS_LFM2_STR-COLINFO sy-vline 
WA_MASS_LFM2_STR-CELL sy-vline 
WA_MASS_LFM2_STR-MANDT_OL sy-vline 
WA_MASS_LFM2_STR-LIFNR_OL sy-vline 
WA_MASS_LFM2_STR-EKORG_OL sy-vline 
WA_MASS_LFM2_STR-LTSNR_OL sy-vline 
WA_MASS_LFM2_STR-WERKS_OL sy-vline 
WA_MASS_LFM2_STR-ERDAT_OL sy-vline 
WA_MASS_LFM2_STR-ERNAM_OL sy-vline 
WA_MASS_LFM2_STR-SPERM_OL sy-vline 
WA_MASS_LFM2_STR-LOEVM_OL sy-vline 
WA_MASS_LFM2_STR-LFABC_OL sy-vline 
WA_MASS_LFM2_STR-WAERS_OL sy-vline 
WA_MASS_LFM2_STR-VERKF_OL sy-vline 
WA_MASS_LFM2_STR-TELF1_OL sy-vline 
WA_MASS_LFM2_STR-MINBW_OL sy-vline 
WA_MASS_LFM2_STR-ZTERM_OL sy-vline 
WA_MASS_LFM2_STR-INCO1_OL sy-vline 
WA_MASS_LFM2_STR-INCO2_OL sy-vline 
WA_MASS_LFM2_STR-WEBRE_OL sy-vline 
WA_MASS_LFM2_STR-KZABS_OL sy-vline 
WA_MASS_LFM2_STR-KALSK_OL sy-vline 
WA_MASS_LFM2_STR-KZAUT_OL sy-vline 
WA_MASS_LFM2_STR-EXPVZ_OL sy-vline 
WA_MASS_LFM2_STR-ZOLLA_OL sy-vline 
WA_MASS_LFM2_STR-MEPRF_OL sy-vline 
WA_MASS_LFM2_STR-EKGRP_OL sy-vline 
WA_MASS_LFM2_STR-XERSY_OL sy-vline 
WA_MASS_LFM2_STR-PLIFZ_OL sy-vline 
WA_MASS_LFM2_STR-MRPPP_OL sy-vline 
WA_MASS_LFM2_STR-LFRHY_OL sy-vline 
WA_MASS_LFM2_STR-LIBES_OL sy-vline 
WA_MASS_LFM2_STR-LIPRE_OL sy-vline 
WA_MASS_LFM2_STR-LISER_OL sy-vline 
WA_MASS_LFM2_STR-INCOV_OL sy-vline 
WA_MASS_LFM2_STR-INCO2_L_OL sy-vline 
WA_MASS_LFM2_STR-INCO3_L_OL sy-vline 
WA_MASS_LFM2_STR-WEORA_OL sy-vline 
WA_MASS_LFM2_STR-DISPO_OL sy-vline 
WA_MASS_LFM2_STR-BOIND_OL sy-vline 
WA_MASS_LFM2_STR-BSTAE_OL sy-vline 
WA_MASS_LFM2_STR-RDPRF_OL sy-vline 
WA_MASS_LFM2_STR-MEGRU_OL sy-vline 
WA_MASS_LFM2_STR-BOPNR_OL sy-vline 
WA_MASS_LFM2_STR-XERSR_OL sy-vline 
WA_MASS_LFM2_STR-ABUEB_OL sy-vline 
WA_MASS_LFM2_STR-PAPRF_OL sy-vline 
WA_MASS_LFM2_STR-XNBWY_OL sy-vline 
WA_MASS_LFM2_STR-LEBRE_OL sy-vline 
WA_MASS_LFM2_STR-BOLRE_OL sy-vline 
WA_MASS_LFM2_STR-UMSAE_OL sy-vline 
WA_MASS_LFM2_STR-UPPRS_OL sy-vline 
WA_MASS_LFM2_STR-TRANSPORT_CHAIN_OL sy-vline 
WA_MASS_LFM2_STR-STAGING_TIME_OL sy-vline      INTO ld_text SEPARATED BY SPACE.

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