ABAP Select data from SAP table TXW_BSET into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXW_BSET 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_BSET. 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_BSET 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_BSET TYPE STANDARD TABLE OF TXW_BSET,
      WA_TXW_BSET TYPE TXW_BSET,
      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_BSET> TYPE TXW_BSET.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_BSET
*  INTO TABLE @DATA(IT_TXW_BSET2).
*--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_BSET INDEX 1 INTO DATA(WA_TXW_BSET2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_BSET-MONAT, sy-vline,
  WA_TXW_BSET-MWSKZ, sy-vline,
  WA_TXW_BSET-HKONT, sy-vline,
  WA_TXW_BSET-TXGRP, sy-vline,
  WA_TXW_BSET-SHKZG, sy-vline,
  WA_TXW_BSET-HWBAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_BSET 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_BSET 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_BSET INTO WA_TXW_BSET.


*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_BSET-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BSET-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field GJAHR_CALC
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TXW_BSET-GJAHR_CALC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BSET-GJAHR_CALC.
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_BSET_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
MONAT TYPE STRING,
MWSKZ TYPE STRING,
HKONT TYPE STRING,
TXGRP TYPE STRING,
SHKZG TYPE STRING,
HWBAS TYPE STRING,
FWBAS TYPE STRING,
HWSTE TYPE STRING,
FWSTE TYPE STRING,
HWAER TYPE STRING,
WAERS TYPE STRING,
TXJCD TYPE STRING,
KSCHL TYPE STRING,
STCEG TYPE STRING,
EGBLD TYPE STRING,
EGLLD TYPE STRING,
KTOSL TYPE STRING,
STMDT TYPE STRING,
STMTI TYPE STRING,
MLDDT TYPE STRING,
KBETR TYPE STRING,
GJAHR_CALC TYPE STRING,
MONAT_CALC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_BSET_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_BSET_STR-MANDT sy-vline 
WA_TXW_BSET_STR-BUKRS sy-vline 
WA_TXW_BSET_STR-BELNR sy-vline 
WA_TXW_BSET_STR-GJAHR sy-vline 
WA_TXW_BSET_STR-BUZEI sy-vline 
WA_TXW_BSET_STR-MONAT sy-vline 
WA_TXW_BSET_STR-MWSKZ sy-vline 
WA_TXW_BSET_STR-HKONT sy-vline 
WA_TXW_BSET_STR-TXGRP sy-vline 
WA_TXW_BSET_STR-SHKZG sy-vline 
WA_TXW_BSET_STR-HWBAS sy-vline 
WA_TXW_BSET_STR-FWBAS sy-vline 
WA_TXW_BSET_STR-HWSTE sy-vline 
WA_TXW_BSET_STR-FWSTE sy-vline 
WA_TXW_BSET_STR-HWAER sy-vline 
WA_TXW_BSET_STR-WAERS sy-vline 
WA_TXW_BSET_STR-TXJCD sy-vline 
WA_TXW_BSET_STR-KSCHL sy-vline 
WA_TXW_BSET_STR-STCEG sy-vline 
WA_TXW_BSET_STR-EGBLD sy-vline 
WA_TXW_BSET_STR-EGLLD sy-vline 
WA_TXW_BSET_STR-KTOSL sy-vline 
WA_TXW_BSET_STR-STMDT sy-vline 
WA_TXW_BSET_STR-STMTI sy-vline 
WA_TXW_BSET_STR-MLDDT sy-vline 
WA_TXW_BSET_STR-KBETR sy-vline 
WA_TXW_BSET_STR-GJAHR_CALC sy-vline 
WA_TXW_BSET_STR-MONAT_CALC sy-vline      INTO ld_text SEPARATED BY SPACE.

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