ABAP Select data from SAP table TXW_BSEC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TXW_BSEC 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_BSEC. 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_BSEC 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_BSEC TYPE STANDARD TABLE OF TXW_BSEC,
      WA_TXW_BSEC TYPE TXW_BSEC,
      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_BSEC> TYPE TXW_BSEC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_BSEC
*  INTO TABLE @DATA(IT_TXW_BSEC2).
*--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_BSEC INDEX 1 INTO DATA(WA_TXW_BSEC2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_BSEC-NAME1, sy-vline,
  WA_TXW_BSEC-NAME2, sy-vline,
  WA_TXW_BSEC-NAME3, sy-vline,
  WA_TXW_BSEC-NAME4, sy-vline,
  WA_TXW_BSEC-PSTLZ, sy-vline,
  WA_TXW_BSEC-ORT01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_BSEC 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_BSEC 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_BSEC INTO WA_TXW_BSEC.


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

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_BSEC-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BSEC-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_BSEC-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_BSEC-ADRNR.
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_BSEC_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTL2 TYPE STRING,
PSKTO TYPE STRING,
BANKN TYPE STRING,
BANKL TYPE STRING,
BANKS TYPE STRING,
STCD1 TYPE STRING,
STCD2 TYPE STRING,
STKZU TYPE STRING,
STKZA TYPE STRING,
REGIO TYPE STRING,
BKONT TYPE STRING,
DTAWS TYPE STRING,
DTAMS TYPE STRING,
XCPDK TYPE STRING,
EMPFG TYPE STRING,
SPRAS TYPE STRING,
FITYP TYPE STRING,
STCDT TYPE STRING,
STKZN TYPE STRING,
STCD3 TYPE STRING,
STCD4 TYPE STRING,
BKREF TYPE STRING,
J_1KFREPRE TYPE STRING,
J_1KFTBUS TYPE STRING,
J_1KFTIND TYPE STRING,
ANRED TYPE STRING,
ADRNR TYPE STRING,
XRGUH TYPE STRING,
HOUSE_NUM TYPE STRING,
HOUSE_NUM1 TYPE STRING,
ORT02 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_BSEC_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_BSEC_STR-MANDT sy-vline 
WA_TXW_BSEC_STR-BUKRS sy-vline 
WA_TXW_BSEC_STR-BELNR sy-vline 
WA_TXW_BSEC_STR-GJAHR sy-vline 
WA_TXW_BSEC_STR-BUZEI sy-vline 
WA_TXW_BSEC_STR-NAME1 sy-vline 
WA_TXW_BSEC_STR-NAME2 sy-vline 
WA_TXW_BSEC_STR-NAME3 sy-vline 
WA_TXW_BSEC_STR-NAME4 sy-vline 
WA_TXW_BSEC_STR-PSTLZ sy-vline 
WA_TXW_BSEC_STR-ORT01 sy-vline 
WA_TXW_BSEC_STR-LAND1 sy-vline 
WA_TXW_BSEC_STR-STRAS sy-vline 
WA_TXW_BSEC_STR-PFACH sy-vline 
WA_TXW_BSEC_STR-PSTL2 sy-vline 
WA_TXW_BSEC_STR-PSKTO sy-vline 
WA_TXW_BSEC_STR-BANKN sy-vline 
WA_TXW_BSEC_STR-BANKL sy-vline 
WA_TXW_BSEC_STR-BANKS sy-vline 
WA_TXW_BSEC_STR-STCD1 sy-vline 
WA_TXW_BSEC_STR-STCD2 sy-vline 
WA_TXW_BSEC_STR-STKZU sy-vline 
WA_TXW_BSEC_STR-STKZA sy-vline 
WA_TXW_BSEC_STR-REGIO sy-vline 
WA_TXW_BSEC_STR-BKONT sy-vline 
WA_TXW_BSEC_STR-DTAWS sy-vline 
WA_TXW_BSEC_STR-DTAMS sy-vline 
WA_TXW_BSEC_STR-XCPDK sy-vline 
WA_TXW_BSEC_STR-EMPFG sy-vline 
WA_TXW_BSEC_STR-SPRAS sy-vline 
WA_TXW_BSEC_STR-FITYP sy-vline 
WA_TXW_BSEC_STR-STCDT sy-vline 
WA_TXW_BSEC_STR-STKZN sy-vline 
WA_TXW_BSEC_STR-STCD3 sy-vline 
WA_TXW_BSEC_STR-STCD4 sy-vline 
WA_TXW_BSEC_STR-BKREF sy-vline 
WA_TXW_BSEC_STR-J_1KFREPRE sy-vline 
WA_TXW_BSEC_STR-J_1KFTBUS sy-vline 
WA_TXW_BSEC_STR-J_1KFTIND sy-vline 
WA_TXW_BSEC_STR-ANRED sy-vline 
WA_TXW_BSEC_STR-ADRNR sy-vline 
WA_TXW_BSEC_STR-XRGUH sy-vline 
WA_TXW_BSEC_STR-HOUSE_NUM sy-vline 
WA_TXW_BSEC_STR-HOUSE_NUM1 sy-vline 
WA_TXW_BSEC_STR-ORT02 sy-vline      INTO ld_text SEPARATED BY SPACE.

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