ABAP Select data from SAP table BIW_LFM1_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BIW_LFM1_S 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 BIW_LFM1_S. 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 BIW_LFM1_S 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_BIW_LFM1_S TYPE STANDARD TABLE OF BIW_LFM1_S,
      WA_BIW_LFM1_S TYPE BIW_LFM1_S,
      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: <BIW_LFM1_S> TYPE BIW_LFM1_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BIW_LFM1_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BIW_LFM1_S
  INTO TABLE IT_BIW_LFM1_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BIW_LFM1_S
*  INTO TABLE @DATA(IT_BIW_LFM1_S2).
*--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_BIW_LFM1_S INDEX 1 INTO DATA(WA_BIW_LFM1_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BIW_LFM1_S ASSIGNING <BIW_LFM1_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BIW_LFM1_S>-MANDT = 1.
<BIW_LFM1_S>-LIFNR = 1.
<BIW_LFM1_S>-EKORG = 1.
<BIW_LFM1_S>-ERDAT = 1.
<BIW_LFM1_S>-ERNAM = 1.

ENDLOOP.

LOOP AT IT_BIW_LFM1_S INTO WA_BIW_LFM1_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BIW_LFM1_S-SPERM, sy-vline,
  WA_BIW_LFM1_S-LOEVM, sy-vline,
  WA_BIW_LFM1_S-LFABC, sy-vline,
  WA_BIW_LFM1_S-WAERS, sy-vline,
  WA_BIW_LFM1_S-VERKF, sy-vline,
  WA_BIW_LFM1_S-TELF1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BIW_LFM1_S 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_BIW_LFM1_S 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_BIW_LFM1_S INTO WA_BIW_LFM1_S.


*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_BIW_LFM1_S-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BIW_LFM1_S-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_BIW_LFM1_S_STR, 
MANDT TYPE STRING,
LIFNR TYPE STRING,
EKORG 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,
LIBES TYPE STRING,
LIPRE TYPE STRING,
LISER TYPE STRING,
PRFRE TYPE STRING,
NRGEW TYPE STRING,
BOIND TYPE STRING,
BLIND TYPE STRING,
KZRET TYPE STRING,
SKRIT TYPE STRING,
BSTAE TYPE STRING,
RDPRF TYPE STRING,
MEGRU TYPE STRING,
VENSL TYPE STRING,
BOPNR TYPE STRING,
XERSR TYPE STRING,
EIKTO TYPE STRING,
ABUEB TYPE STRING,
PAPRF TYPE STRING,
AGREL TYPE STRING,
XNBWY TYPE STRING,
VSBED TYPE STRING,
LEBRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BIW_LFM1_S_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_BIW_LFM1_S_STR-MANDT sy-vline 
WA_BIW_LFM1_S_STR-LIFNR sy-vline 
WA_BIW_LFM1_S_STR-EKORG sy-vline 
WA_BIW_LFM1_S_STR-ERDAT sy-vline 
WA_BIW_LFM1_S_STR-ERNAM sy-vline 
WA_BIW_LFM1_S_STR-SPERM sy-vline 
WA_BIW_LFM1_S_STR-LOEVM sy-vline 
WA_BIW_LFM1_S_STR-LFABC sy-vline 
WA_BIW_LFM1_S_STR-WAERS sy-vline 
WA_BIW_LFM1_S_STR-VERKF sy-vline 
WA_BIW_LFM1_S_STR-TELF1 sy-vline 
WA_BIW_LFM1_S_STR-MINBW sy-vline 
WA_BIW_LFM1_S_STR-ZTERM sy-vline 
WA_BIW_LFM1_S_STR-INCO1 sy-vline 
WA_BIW_LFM1_S_STR-INCO2 sy-vline 
WA_BIW_LFM1_S_STR-WEBRE sy-vline 
WA_BIW_LFM1_S_STR-KZABS sy-vline 
WA_BIW_LFM1_S_STR-KALSK sy-vline 
WA_BIW_LFM1_S_STR-KZAUT sy-vline 
WA_BIW_LFM1_S_STR-EXPVZ sy-vline 
WA_BIW_LFM1_S_STR-ZOLLA sy-vline 
WA_BIW_LFM1_S_STR-MEPRF sy-vline 
WA_BIW_LFM1_S_STR-EKGRP sy-vline 
WA_BIW_LFM1_S_STR-BOLRE sy-vline 
WA_BIW_LFM1_S_STR-UMSAE sy-vline 
WA_BIW_LFM1_S_STR-XERSY sy-vline 
WA_BIW_LFM1_S_STR-PLIFZ sy-vline 
WA_BIW_LFM1_S_STR-MRPPP sy-vline 
WA_BIW_LFM1_S_STR-LFRHY sy-vline 
WA_BIW_LFM1_S_STR-LIBES sy-vline 
WA_BIW_LFM1_S_STR-LIPRE sy-vline 
WA_BIW_LFM1_S_STR-LISER sy-vline 
WA_BIW_LFM1_S_STR-PRFRE sy-vline 
WA_BIW_LFM1_S_STR-NRGEW sy-vline 
WA_BIW_LFM1_S_STR-BOIND sy-vline 
WA_BIW_LFM1_S_STR-BLIND sy-vline 
WA_BIW_LFM1_S_STR-KZRET sy-vline 
WA_BIW_LFM1_S_STR-SKRIT sy-vline 
WA_BIW_LFM1_S_STR-BSTAE sy-vline 
WA_BIW_LFM1_S_STR-RDPRF sy-vline 
WA_BIW_LFM1_S_STR-MEGRU sy-vline 
WA_BIW_LFM1_S_STR-VENSL sy-vline 
WA_BIW_LFM1_S_STR-BOPNR sy-vline 
WA_BIW_LFM1_S_STR-XERSR sy-vline 
WA_BIW_LFM1_S_STR-EIKTO sy-vline 
WA_BIW_LFM1_S_STR-ABUEB sy-vline 
WA_BIW_LFM1_S_STR-PAPRF sy-vline 
WA_BIW_LFM1_S_STR-AGREL sy-vline 
WA_BIW_LFM1_S_STR-XNBWY sy-vline 
WA_BIW_LFM1_S_STR-VSBED sy-vline 
WA_BIW_LFM1_S_STR-LEBRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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