ABAP Select data from SAP table WLF_TXW_WBRK_V into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_TXW_WBRK_V
*  INTO TABLE @DATA(IT_WLF_TXW_WBRK_V2).
*--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_WLF_TXW_WBRK_V INDEX 1 INTO DATA(WA_WLF_TXW_WBRK_V2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_TXW_WBRK_V>-MANDT = 1.
<WLF_TXW_WBRK_V>-WBELNN = 1.
<WLF_TXW_WBRK_V>-POSNN = 1.
<WLF_TXW_WBRK_V>-WDTYPN = 1.
<WLF_TXW_WBRK_V>-WBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_TXW_WBRK_V-LFART, sy-vline,
  WA_WLF_TXW_WBRK_V-LFTYP, sy-vline,
  WA_WLF_TXW_WBRK_V-WRART, sy-vline,
  WA_WLF_TXW_WBRK_V-ABART, sy-vline,
  WA_WLF_TXW_WBRK_V-KALSM, sy-vline,
  WA_WLF_TXW_WBRK_V-KALSMD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_TXW_WBRK_V 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_WLF_TXW_WBRK_V 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_WLF_TXW_WBRK_V INTO WA_WLF_TXW_WBRK_V.


*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 WBELNN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_TXW_WBRK_V-WBELNN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_TXW_WBRK_V-WBELNN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KNUMA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_TXW_WBRK_V-KNUMA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_TXW_WBRK_V-KNUMA.
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_WLF_TXW_WBRK_V_STR, 
MANDT TYPE STRING,
WBELNN TYPE STRING,
POSNN TYPE STRING,
WDTYPN TYPE STRING,
WBELN TYPE STRING,
LFART TYPE STRING,
LFTYP TYPE STRING,
WRART TYPE STRING,
ABART TYPE STRING,
KALSM TYPE STRING,
KALSMD TYPE STRING,
WFDAT TYPE STRING,
LIFRE TYPE STRING,
LNRZB TYPE STRING,
KUNRE TYPE STRING,
KUNRG TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
BLDAT TYPE STRING,
XBLNR TYPE STRING,
ZUONR TYPE STRING,
WAERL TYPE STRING,
WKURS TYPE STRING,
WKURS_DAT TYPE STRING,
BRTWR TYPE STRING,
NETWR TYPE STRING,
NETWRD TYPE STRING,
BRTWRD TYPE STRING,
GSKTOD TYPE STRING,
GSKTO TYPE STRING,
FKSTO TYPE STRING,
KAPPL TYPE STRING,
KNUMV TYPE STRING,
KNUMVD TYPE STRING,
LFAKS TYPE STRING,
KNUMA TYPE STRING,
MWSBK TYPE STRING,
MWSBKD TYPE STRING,
NAVNK TYPE STRING,
WDTYP TYPE STRING,
KURST TYPE STRING,
BUKRS_DEB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_TXW_WBRK_V_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_WLF_TXW_WBRK_V_STR-MANDT sy-vline 
WA_WLF_TXW_WBRK_V_STR-WBELNN sy-vline 
WA_WLF_TXW_WBRK_V_STR-POSNN sy-vline 
WA_WLF_TXW_WBRK_V_STR-WDTYPN sy-vline 
WA_WLF_TXW_WBRK_V_STR-WBELN sy-vline 
WA_WLF_TXW_WBRK_V_STR-LFART sy-vline 
WA_WLF_TXW_WBRK_V_STR-LFTYP sy-vline 
WA_WLF_TXW_WBRK_V_STR-WRART sy-vline 
WA_WLF_TXW_WBRK_V_STR-ABART sy-vline 
WA_WLF_TXW_WBRK_V_STR-KALSM sy-vline 
WA_WLF_TXW_WBRK_V_STR-KALSMD sy-vline 
WA_WLF_TXW_WBRK_V_STR-WFDAT sy-vline 
WA_WLF_TXW_WBRK_V_STR-LIFRE sy-vline 
WA_WLF_TXW_WBRK_V_STR-LNRZB sy-vline 
WA_WLF_TXW_WBRK_V_STR-KUNRE sy-vline 
WA_WLF_TXW_WBRK_V_STR-KUNRG sy-vline 
WA_WLF_TXW_WBRK_V_STR-ERDAT sy-vline 
WA_WLF_TXW_WBRK_V_STR-ERNAM sy-vline 
WA_WLF_TXW_WBRK_V_STR-AEDAT sy-vline 
WA_WLF_TXW_WBRK_V_STR-BLDAT sy-vline 
WA_WLF_TXW_WBRK_V_STR-XBLNR sy-vline 
WA_WLF_TXW_WBRK_V_STR-ZUONR sy-vline 
WA_WLF_TXW_WBRK_V_STR-WAERL sy-vline 
WA_WLF_TXW_WBRK_V_STR-WKURS sy-vline 
WA_WLF_TXW_WBRK_V_STR-WKURS_DAT sy-vline 
WA_WLF_TXW_WBRK_V_STR-BRTWR sy-vline 
WA_WLF_TXW_WBRK_V_STR-NETWR sy-vline 
WA_WLF_TXW_WBRK_V_STR-NETWRD sy-vline 
WA_WLF_TXW_WBRK_V_STR-BRTWRD sy-vline 
WA_WLF_TXW_WBRK_V_STR-GSKTOD sy-vline 
WA_WLF_TXW_WBRK_V_STR-GSKTO sy-vline 
WA_WLF_TXW_WBRK_V_STR-FKSTO sy-vline 
WA_WLF_TXW_WBRK_V_STR-KAPPL sy-vline 
WA_WLF_TXW_WBRK_V_STR-KNUMV sy-vline 
WA_WLF_TXW_WBRK_V_STR-KNUMVD sy-vline 
WA_WLF_TXW_WBRK_V_STR-LFAKS sy-vline 
WA_WLF_TXW_WBRK_V_STR-KNUMA sy-vline 
WA_WLF_TXW_WBRK_V_STR-MWSBK sy-vline 
WA_WLF_TXW_WBRK_V_STR-MWSBKD sy-vline 
WA_WLF_TXW_WBRK_V_STR-NAVNK sy-vline 
WA_WLF_TXW_WBRK_V_STR-WDTYP sy-vline 
WA_WLF_TXW_WBRK_V_STR-KURST sy-vline 
WA_WLF_TXW_WBRK_V_STR-BUKRS_DEB sy-vline      INTO ld_text SEPARATED BY SPACE.

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