ABAP Select data from SAP table REGUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REGUT
*  INTO TABLE @DATA(IT_REGUT2).
*--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_REGUT INDEX 1 INTO DATA(WA_REGUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REGUT>-MANDT = 1.
<REGUT>-ZBUKR = 1.
<REGUT>-BANKS = 1.
<REGUT>-LAUFD = 1.
<REGUT>-LAUFI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REGUT-XVORL, sy-vline,
  WA_REGUT-DTKEY, sy-vline,
  WA_REGUT-LFDNR, sy-vline,
  WA_REGUT-WAERS, sy-vline,
  WA_REGUT-RBETR, sy-vline,
  WA_REGUT-RENUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REGUT 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_REGUT 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_REGUT INTO WA_REGUT.


*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 AC132, internal->external for field RBETR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_REGUT-RBETR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REGUT-RBETR.
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_REGUT_STR, 
MANDT TYPE STRING,
ZBUKR TYPE STRING,
BANKS TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
XVORL TYPE STRING,
DTKEY TYPE STRING,
LFDNR TYPE STRING,
WAERS TYPE STRING,
RBETR TYPE STRING,
RENUM TYPE STRING,
DTFOR TYPE STRING,
TSNAM TYPE STRING,
TSDAT TYPE STRING,
TSTIM TYPE STRING,
TSUSR TYPE STRING,
DWNAM TYPE STRING,
DWDAT TYPE STRING,
DWTIM TYPE STRING,
DWUSR TYPE STRING,
KADAT TYPE STRING,
KATIM TYPE STRING,
KAUSR TYPE STRING,
REPORT TYPE STRING,
FSNAM TYPE STRING,
USREX TYPE STRING,
EDINUM TYPE STRING,
GRPNO TYPE STRING,
DTTYP TYPE STRING,
GUID TYPE STRING,
SAPRL TYPE STRING,
CODEPAGE TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REGUT_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_REGUT_STR-MANDT sy-vline 
WA_REGUT_STR-ZBUKR sy-vline 
WA_REGUT_STR-BANKS sy-vline 
WA_REGUT_STR-LAUFD sy-vline 
WA_REGUT_STR-LAUFI sy-vline 
WA_REGUT_STR-XVORL sy-vline 
WA_REGUT_STR-DTKEY sy-vline 
WA_REGUT_STR-LFDNR sy-vline 
WA_REGUT_STR-WAERS sy-vline 
WA_REGUT_STR-RBETR sy-vline 
WA_REGUT_STR-RENUM sy-vline 
WA_REGUT_STR-DTFOR sy-vline 
WA_REGUT_STR-TSNAM sy-vline 
WA_REGUT_STR-TSDAT sy-vline 
WA_REGUT_STR-TSTIM sy-vline 
WA_REGUT_STR-TSUSR sy-vline 
WA_REGUT_STR-DWNAM sy-vline 
WA_REGUT_STR-DWDAT sy-vline 
WA_REGUT_STR-DWTIM sy-vline 
WA_REGUT_STR-DWUSR sy-vline 
WA_REGUT_STR-KADAT sy-vline 
WA_REGUT_STR-KATIM sy-vline 
WA_REGUT_STR-KAUSR sy-vline 
WA_REGUT_STR-REPORT sy-vline 
WA_REGUT_STR-FSNAM sy-vline 
WA_REGUT_STR-USREX sy-vline 
WA_REGUT_STR-EDINUM sy-vline 
WA_REGUT_STR-GRPNO sy-vline 
WA_REGUT_STR-DTTYP sy-vline 
WA_REGUT_STR-GUID sy-vline 
WA_REGUT_STR-SAPRL sy-vline 
WA_REGUT_STR-CODEPAGE sy-vline 
WA_REGUT_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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