ABAP Select data from SAP table GSS_RFRUKRL0_LIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GSS_RFRUKRL0_LIST 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 GSS_RFRUKRL0_LIST. 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 GSS_RFRUKRL0_LIST 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_GSS_RFRUKRL0_LIST TYPE STANDARD TABLE OF GSS_RFRUKRL0_LIST,
      WA_GSS_RFRUKRL0_LIST TYPE GSS_RFRUKRL0_LIST,
      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: <GSS_RFRUKRL0_LIST> TYPE GSS_RFRUKRL0_LIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GSS_RFRUKRL0_LIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GSS_RFRUKRL0_LIST
  INTO TABLE IT_GSS_RFRUKRL0_LIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GSS_RFRUKRL0_LIST
*  INTO TABLE @DATA(IT_GSS_RFRUKRL0_LIST2).
*--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_GSS_RFRUKRL0_LIST INDEX 1 INTO DATA(WA_GSS_RFRUKRL0_LIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GSS_RFRUKRL0_LIST ASSIGNING <GSS_RFRUKRL0_LIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GSS_RFRUKRL0_LIST>-BUKRS = 1.
<GSS_RFRUKRL0_LIST>-LIFNR = 1.
<GSS_RFRUKRL0_LIST>-WAERS = 1.
<GSS_RFRUKRL0_LIST>-PREDO = 1.
<GSS_RFRUKRL0_LIST>-PRZHL = 1.

ENDLOOP.

LOOP AT IT_GSS_RFRUKRL0_LIST INTO WA_GSS_RFRUKRL0_LIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GSS_RFRUKRL0_LIST-WPUTI, sy-vline,
  WA_GSS_RFRUKRL0_LIST-OTFAK, sy-vline,
  WA_GSS_RFRUKRL0_LIST-PRFAK, sy-vline,
  WA_GSS_RFRUKRL0_LIST-NEOTF, sy-vline,
  WA_GSS_RFRUKRL0_LIST-SALDO, sy-vline,
  WA_GSS_RFRUKRL0_LIST-NAME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GSS_RFRUKRL0_LIST 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_GSS_RFRUKRL0_LIST 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_GSS_RFRUKRL0_LIST INTO WA_GSS_RFRUKRL0_LIST.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PREDO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-PREDO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-PREDO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PRZHL
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-PRZHL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-PRZHL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WPUTI
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-WPUTI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-WPUTI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field OTFAK
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-OTFAK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-OTFAK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PRFAK
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-PRFAK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-PRFAK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field NEOTF
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-NEOTF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-NEOTF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SALDO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_GSS_RFRUKRL0_LIST-SALDO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GSS_RFRUKRL0_LIST-SALDO.
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_GSS_RFRUKRL0_LIST_STR, 
BUKRS TYPE STRING,
LIFNR TYPE STRING,
WAERS TYPE STRING,
PREDO TYPE STRING,
PRZHL TYPE STRING,
WPUTI TYPE STRING,
OTFAK TYPE STRING,
PRFAK TYPE STRING,
NEOTF TYPE STRING,
SALDO TYPE STRING,
NAME1 TYPE STRING,
ORT01 TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
BUTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GSS_RFRUKRL0_LIST_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_GSS_RFRUKRL0_LIST_STR-BUKRS sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-LIFNR sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-WAERS sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-PREDO sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-PRZHL sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-WPUTI sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-OTFAK sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-PRFAK sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-NEOTF sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-SALDO sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-NAME1 sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-ORT01 sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-TEXT1 sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-TEXT2 sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-TEXT3 sy-vline 
WA_GSS_RFRUKRL0_LIST_STR-BUTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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