ABAP Select data from SAP table TXW_BI_HD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXW_BI_HD 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_BI_HD. 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_BI_HD 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_BI_HD TYPE STANDARD TABLE OF TXW_BI_HD,
      WA_TXW_BI_HD TYPE TXW_BI_HD,
      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_BI_HD> TYPE TXW_BI_HD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_BI_HD
*  INTO TABLE @DATA(IT_TXW_BI_HD2).
*--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_BI_HD INDEX 1 INTO DATA(WA_TXW_BI_HD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_BI_HD>-MANDT = 1.
<TXW_BI_HD>-BUKRS = 1.
<TXW_BI_HD>-BELNR = 1.
<TXW_BI_HD>-GJAHR = 1.
<TXW_BI_HD>-MONAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_BI_HD-VBELN, sy-vline,
  WA_TXW_BI_HD-XBLNR, sy-vline,
  WA_TXW_BI_HD-WAERK, sy-vline,
  WA_TXW_BI_HD-VBUND, sy-vline,
  WA_TXW_BI_HD-EXPKZ, sy-vline,
  WA_TXW_BI_HD-FKART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_BI_HD 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_BI_HD 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_BI_HD INTO WA_TXW_BI_HD.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TXW_BI_HD-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BI_HD-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_BI_HD-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BI_HD-LOGSYS.
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_BI_HD_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
VBELN TYPE STRING,
XBLNR TYPE STRING,
WAERK TYPE STRING,
VBUND TYPE STRING,
EXPKZ TYPE STRING,
FKART TYPE STRING,
FKDAT TYPE STRING,
FKSTO TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
KALSM TYPE STRING,
KUNAG TYPE STRING,
KUNRG TYPE STRING,
SFAKN TYPE STRING,
VBTYP TYPE STRING,
NETWR TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
BSTNK_VF TYPE STRING,
KNUMV TYPE STRING,
VKORG TYPE STRING,
ZTERM TYPE STRING,
LAND1 TYPE STRING,
LANDTX TYPE STRING,
LOGSYS TYPE STRING,
EXNUM TYPE STRING,
STCEG TYPE STRING,
STCEG_H TYPE STRING,
STCEG_L TYPE STRING,
XEGDR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
KURRF TYPE STRING,
POPER TYPE STRING,
TAXK1 TYPE STRING,
TAXK2 TYPE STRING,
TAXK3 TYPE STRING,
TAXK4 TYPE STRING,
TAXK5 TYPE STRING,
TAXK6 TYPE STRING,
TAXK7 TYPE STRING,
TAXK8 TYPE STRING,
TAXK9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_BI_HD_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_BI_HD_STR-MANDT sy-vline 
WA_TXW_BI_HD_STR-BUKRS sy-vline 
WA_TXW_BI_HD_STR-BELNR sy-vline 
WA_TXW_BI_HD_STR-GJAHR sy-vline 
WA_TXW_BI_HD_STR-MONAT sy-vline 
WA_TXW_BI_HD_STR-VBELN sy-vline 
WA_TXW_BI_HD_STR-XBLNR sy-vline 
WA_TXW_BI_HD_STR-WAERK sy-vline 
WA_TXW_BI_HD_STR-VBUND sy-vline 
WA_TXW_BI_HD_STR-EXPKZ sy-vline 
WA_TXW_BI_HD_STR-FKART sy-vline 
WA_TXW_BI_HD_STR-FKDAT sy-vline 
WA_TXW_BI_HD_STR-FKSTO sy-vline 
WA_TXW_BI_HD_STR-INCO1 sy-vline 
WA_TXW_BI_HD_STR-INCO2 sy-vline 
WA_TXW_BI_HD_STR-KALSM sy-vline 
WA_TXW_BI_HD_STR-KUNAG sy-vline 
WA_TXW_BI_HD_STR-KUNRG sy-vline 
WA_TXW_BI_HD_STR-SFAKN sy-vline 
WA_TXW_BI_HD_STR-VBTYP sy-vline 
WA_TXW_BI_HD_STR-NETWR sy-vline 
WA_TXW_BI_HD_STR-AWTYP sy-vline 
WA_TXW_BI_HD_STR-AWKEY sy-vline 
WA_TXW_BI_HD_STR-BSTNK_VF sy-vline 
WA_TXW_BI_HD_STR-KNUMV sy-vline 
WA_TXW_BI_HD_STR-VKORG sy-vline 
WA_TXW_BI_HD_STR-ZTERM sy-vline 
WA_TXW_BI_HD_STR-LAND1 sy-vline 
WA_TXW_BI_HD_STR-LANDTX sy-vline 
WA_TXW_BI_HD_STR-LOGSYS sy-vline 
WA_TXW_BI_HD_STR-EXNUM sy-vline 
WA_TXW_BI_HD_STR-STCEG sy-vline 
WA_TXW_BI_HD_STR-STCEG_H sy-vline 
WA_TXW_BI_HD_STR-STCEG_L sy-vline 
WA_TXW_BI_HD_STR-XEGDR sy-vline 
WA_TXW_BI_HD_STR-ERNAM sy-vline 
WA_TXW_BI_HD_STR-ERDAT sy-vline 
WA_TXW_BI_HD_STR-KURRF sy-vline 
WA_TXW_BI_HD_STR-POPER sy-vline 
WA_TXW_BI_HD_STR-TAXK1 sy-vline 
WA_TXW_BI_HD_STR-TAXK2 sy-vline 
WA_TXW_BI_HD_STR-TAXK3 sy-vline 
WA_TXW_BI_HD_STR-TAXK4 sy-vline 
WA_TXW_BI_HD_STR-TAXK5 sy-vline 
WA_TXW_BI_HD_STR-TAXK6 sy-vline 
WA_TXW_BI_HD_STR-TAXK7 sy-vline 
WA_TXW_BI_HD_STR-TAXK8 sy-vline 
WA_TXW_BI_HD_STR-TAXK9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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