ABAP Select data from SAP table REGUPO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REGUPO
*  INTO TABLE @DATA(IT_REGUPO2).
*--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_REGUPO INDEX 1 INTO DATA(WA_REGUPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REGUPO>-MANDT = 1.
<REGUPO>-LAUFD = 1.
<REGUPO>-LAUFI = 1.
<REGUPO>-BUKRS = 1.
<REGUPO>-BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REGUPO-GJAHR, sy-vline,
  WA_REGUPO-BUZEI, sy-vline,
  WA_REGUPO-VERSN, sy-vline,
  WA_REGUPO-VBLNR, sy-vline,
  WA_REGUPO-POKEN, sy-vline,
  WA_REGUPO-SKNTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REGUPO 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_REGUPO 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_REGUPO INTO WA_REGUPO.


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

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

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

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_REGUPO-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REGUPO-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_REGUPO-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REGUPO-WSKTO.
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_REGUPO_STR, 
MANDT TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
VERSN TYPE STRING,
VBLNR TYPE STRING,
POKEN TYPE STRING,
SKNTO TYPE STRING,
WSKTO TYPE STRING,
ZLSPR TYPE STRING,
LZBKZ TYPE STRING,
LANDL TYPE STRING,
DIEKZ TYPE STRING,
ZBDXT TYPE STRING,
ZBDXP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REGUPO_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_REGUPO_STR-MANDT sy-vline 
WA_REGUPO_STR-LAUFD sy-vline 
WA_REGUPO_STR-LAUFI sy-vline 
WA_REGUPO_STR-BUKRS sy-vline 
WA_REGUPO_STR-BELNR sy-vline 
WA_REGUPO_STR-GJAHR sy-vline 
WA_REGUPO_STR-BUZEI sy-vline 
WA_REGUPO_STR-VERSN sy-vline 
WA_REGUPO_STR-VBLNR sy-vline 
WA_REGUPO_STR-POKEN sy-vline 
WA_REGUPO_STR-SKNTO sy-vline 
WA_REGUPO_STR-WSKTO sy-vline 
WA_REGUPO_STR-ZLSPR sy-vline 
WA_REGUPO_STR-LZBKZ sy-vline 
WA_REGUPO_STR-LANDL sy-vline 
WA_REGUPO_STR-DIEKZ sy-vline 
WA_REGUPO_STR-ZBDXT sy-vline 
WA_REGUPO_STR-ZBDXP sy-vline      INTO ld_text SEPARATED BY SPACE.

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