ABAP Select data from SAP table RFUMS_ALV_TOTAL_VAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFUMS_ALV_TOTAL_VAT
*  INTO TABLE @DATA(IT_RFUMS_ALV_TOTAL_VAT2).
*--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_RFUMS_ALV_TOTAL_VAT INDEX 1 INTO DATA(WA_RFUMS_ALV_TOTAL_VAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFUMS_ALV_TOTAL_VAT>-BUKRS = 1.
<RFUMS_ALV_TOTAL_VAT>-MWART = 1.
<RFUMS_ALV_TOTAL_VAT>-HKONT = 1.
<RFUMS_ALV_TOTAL_VAT>-TAX_COUNTRY = 1.
<RFUMS_ALV_TOTAL_VAT>-MWSKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFUMS_ALV_TOTAL_VAT-TXDAT_FROM, sy-vline,
  WA_RFUMS_ALV_TOTAL_VAT-TEXT1, sy-vline,
  WA_RFUMS_ALV_TOTAL_VAT-HWBAS, sy-vline,
  WA_RFUMS_ALV_TOTAL_VAT-HWAUS, sy-vline,
  WA_RFUMS_ALV_TOTAL_VAT-HWVOR, sy-vline,
  WA_RFUMS_ALV_TOTAL_VAT-HWANAF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFUMS_ALV_TOTAL_VAT 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_RFUMS_ALV_TOTAL_VAT 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_RFUMS_ALV_TOTAL_VAT INTO WA_RFUMS_ALV_TOTAL_VAT.


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

*Conversion exit AC172, internal->external for field HWBAS
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFUMS_ALV_TOTAL_VAT-HWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFUMS_ALV_TOTAL_VAT-HWBAS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AU132, internal->external for field HWVNAF
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RFUMS_ALV_TOTAL_VAT-HWVNAF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFUMS_ALV_TOTAL_VAT-HWVNAF.
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_RFUMS_ALV_TOTAL_VAT_STR, 
BUKRS TYPE STRING,
MWART TYPE STRING,
HKONT TYPE STRING,
TAX_COUNTRY TYPE STRING,
MWSKZ TYPE STRING,
TXDAT_FROM TYPE STRING,
TEXT1 TYPE STRING,
HWBAS TYPE STRING,
HWAUS TYPE STRING,
HWVOR TYPE STRING,
HWANAF TYPE STRING,
HWVNAF TYPE STRING,
MLDWAER TYPE STRING,
FLG_DIR TYPE STRING,
FLG_DP TYPE STRING,
FLG_DPG TYPE STRING,
FLG_BUV TYPE STRING,
PBUKR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFUMS_ALV_TOTAL_VAT_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_RFUMS_ALV_TOTAL_VAT_STR-BUKRS sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-MWART sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-HKONT sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-TAX_COUNTRY sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-MWSKZ sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-TXDAT_FROM sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-TEXT1 sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-HWBAS sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-HWAUS sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-HWVOR sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-HWANAF sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-HWVNAF sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-MLDWAER sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-FLG_DIR sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-FLG_DP sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-FLG_DPG sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-FLG_BUV sy-vline 
WA_RFUMS_ALV_TOTAL_VAT_STR-PBUKR sy-vline      INTO ld_text SEPARATED BY SPACE.

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