ABAP Select data from SAP table TXW_S_VBAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_S_VBAP
*  INTO TABLE @DATA(IT_TXW_S_VBAP2).
*--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_TXW_S_VBAP INDEX 1 INTO DATA(WA_TXW_S_VBAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_S_VBAP>-TXW_MANDT = 1.
<TXW_S_VBAP>-TXW_VBELN = 1.
<TXW_S_VBAP>-TXW_POSNR = 1.
<TXW_S_VBAP>-MANDT = 1.
<TXW_S_VBAP>-VBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_S_VBAP-POSNR, sy-vline,
  WA_TXW_S_VBAP-MATNR, sy-vline,
  WA_TXW_S_VBAP-MATKL, sy-vline,
  WA_TXW_S_VBAP-ARKTX, sy-vline,
  WA_TXW_S_VBAP-PRODH, sy-vline,
  WA_TXW_S_VBAP-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_S_VBAP 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_TXW_S_VBAP 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_TXW_S_VBAP INTO WA_TXW_S_VBAP.


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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TXW_S_VBAP-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_S_VBAP-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TXW_S_VBAP-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_S_VBAP-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VGBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_S_VBAP-VGBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_S_VBAP-VGBEL.
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_TXW_S_VBAP_STR, 
TXW_MANDT TYPE STRING,
TXW_VBELN TYPE STRING,
TXW_POSNR TYPE STRING,
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
ARKTX TYPE STRING,
PRODH TYPE STRING,
MEINS TYPE STRING,
SMENG TYPE STRING,
VRKME TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
NETWR TYPE STRING,
VGBEL TYPE STRING,
VGPOS TYPE STRING,
VGTYP TYPE STRING,
BUKRS_VF TYPE STRING,
WAERK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_S_VBAP_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_TXW_S_VBAP_STR-TXW_MANDT sy-vline 
WA_TXW_S_VBAP_STR-TXW_VBELN sy-vline 
WA_TXW_S_VBAP_STR-TXW_POSNR sy-vline 
WA_TXW_S_VBAP_STR-MANDT sy-vline 
WA_TXW_S_VBAP_STR-VBELN sy-vline 
WA_TXW_S_VBAP_STR-POSNR sy-vline 
WA_TXW_S_VBAP_STR-MATNR sy-vline 
WA_TXW_S_VBAP_STR-MATKL sy-vline 
WA_TXW_S_VBAP_STR-ARKTX sy-vline 
WA_TXW_S_VBAP_STR-PRODH sy-vline 
WA_TXW_S_VBAP_STR-MEINS sy-vline 
WA_TXW_S_VBAP_STR-SMENG sy-vline 
WA_TXW_S_VBAP_STR-VRKME sy-vline 
WA_TXW_S_VBAP_STR-WERKS sy-vline 
WA_TXW_S_VBAP_STR-LGORT sy-vline 
WA_TXW_S_VBAP_STR-NETWR sy-vline 
WA_TXW_S_VBAP_STR-VGBEL sy-vline 
WA_TXW_S_VBAP_STR-VGPOS sy-vline 
WA_TXW_S_VBAP_STR-VGTYP sy-vline 
WA_TXW_S_VBAP_STR-BUKRS_VF sy-vline 
WA_TXW_S_VBAP_STR-WAERK sy-vline      INTO ld_text SEPARATED BY SPACE.

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