ABAP Select data from SAP table RFRRK10 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFRRK10 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 RFRRK10. 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 RFRRK10 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_RFRRK10 TYPE STANDARD TABLE OF RFRRK10,
      WA_RFRRK10 TYPE RFRRK10,
      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: <RFRRK10> TYPE RFRRK10.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFRRK10.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFRRK10
  INTO TABLE IT_RFRRK10.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFRRK10
*  INTO TABLE @DATA(IT_RFRRK102).
*--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_RFRRK10 INDEX 1 INTO DATA(WA_RFRRK102).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFRRK10 ASSIGNING <RFRRK10>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFRRK10>-LIFNR = 1.
<RFRRK10>-BUKRS = 1.
<RFRRK10>-GJAHR = 1.
<RFRRK10>-PERDE = 1.
<RFRRK10>-PERIO = 1.

ENDLOOP.

LOOP AT IT_RFRRK10 INTO WA_RFRRK10.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFRRK10-KOART, sy-vline,
  WA_RFRRK10-UMSKZ, sy-vline,
  WA_RFRRK10-WAERS, sy-vline,
  WA_RFRRK10-UMSAV, sy-vline,
  WA_RFRRK10-UMSOL, sy-vline,
  WA_RFRRK10-UMHAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFRRK10 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_RFRRK10 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_RFRRK10 INTO WA_RFRRK10.


*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_RFRRK10-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIO
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-PERIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-PERIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field UMSAV
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-UMSAV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-UMSAV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field UMSOL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-UMSOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-UMSOL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field UMHAB
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-UMHAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-UMHAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field UMPER
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-UMPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-UMPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field KUMSL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-KUMSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-KUMSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field SALES
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_RFRRK10-SALES
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRK10-SALES.
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_RFRRK10_STR, 
LIFNR TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
PERDE TYPE STRING,
PERIO TYPE STRING,
KOART TYPE STRING,
UMSKZ TYPE STRING,
WAERS TYPE STRING,
UMSAV TYPE STRING,
UMSOL TYPE STRING,
UMHAB TYPE STRING,
UMPER TYPE STRING,
KUMSL TYPE STRING,
SALES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFRRK10_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_RFRRK10_STR-LIFNR sy-vline 
WA_RFRRK10_STR-BUKRS sy-vline 
WA_RFRRK10_STR-GJAHR sy-vline 
WA_RFRRK10_STR-PERDE sy-vline 
WA_RFRRK10_STR-PERIO sy-vline 
WA_RFRRK10_STR-KOART sy-vline 
WA_RFRRK10_STR-UMSKZ sy-vline 
WA_RFRRK10_STR-WAERS sy-vline 
WA_RFRRK10_STR-UMSAV sy-vline 
WA_RFRRK10_STR-UMSOL sy-vline 
WA_RFRRK10_STR-UMHAB sy-vline 
WA_RFRRK10_STR-UMPER sy-vline 
WA_RFRRK10_STR-KUMSL sy-vline 
WA_RFRRK10_STR-SALES sy-vline      INTO ld_text SEPARATED BY SPACE.

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