ABAP Select data from SAP table RFRRD02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFRRD02 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 RFRRD02. 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 RFRRD02 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_RFRRD02 TYPE STANDARD TABLE OF RFRRD02,
      WA_RFRRD02 TYPE RFRRD02,
      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: <RFRRD02> TYPE RFRRD02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFRRD02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFRRD02
  INTO TABLE IT_RFRRD02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFRRD02
*  INTO TABLE @DATA(IT_RFRRD022).
*--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_RFRRD02 INDEX 1 INTO DATA(WA_RFRRD022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFRRD02 ASSIGNING <RFRRD02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFRRD02>-KUNNR = 1.
<RFRRD02>-TTG01 = 1.
<RFRRD02>-TBT01 = 1.
<RFRRD02>-TZI01 = 1.
<RFRRD02>-TTG02 = 1.

ENDLOOP.

LOOP AT IT_RFRRD02 INTO WA_RFRRD02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFRRD02-TBT02, sy-vline,
  WA_RFRRD02-TZI02, sy-vline,
  WA_RFRRD02-TTG03, sy-vline,
  WA_RFRRD02-TBT03, sy-vline,
  WA_RFRRD02-TZI03, sy-vline,
  WA_RFRRD02-STG01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFRRD02 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_RFRRD02 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_RFRRD02 INTO WA_RFRRD02.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD152, internal->external for field TBT01
CALL FUNCTION 'CONVERSION_EXIT_AD152_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-TBT01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-TBT01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD195, internal->external for field TZI01
CALL FUNCTION 'CONVERSION_EXIT_AD195_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-TZI01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-TZI01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD152, internal->external for field TBT02
CALL FUNCTION 'CONVERSION_EXIT_AD152_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-TBT02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-TBT02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD195, internal->external for field TZI02
CALL FUNCTION 'CONVERSION_EXIT_AD195_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-TZI02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-TZI02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD152, internal->external for field TBT03
CALL FUNCTION 'CONVERSION_EXIT_AD152_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-TBT03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-TBT03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD195, internal->external for field TZI03
CALL FUNCTION 'CONVERSION_EXIT_AD195_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-TZI03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-TZI03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD192, internal->external for field SBT01
CALL FUNCTION 'CONVERSION_EXIT_AD192_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-SBT01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-SBT01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD235, internal->external for field SZI01
CALL FUNCTION 'CONVERSION_EXIT_AD235_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-SZI01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-SZI01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD192, internal->external for field SBT02
CALL FUNCTION 'CONVERSION_EXIT_AD192_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-SBT02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-SBT02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD235, internal->external for field SZI02
CALL FUNCTION 'CONVERSION_EXIT_AD235_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-SZI02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-SZI02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD192, internal->external for field SBT03
CALL FUNCTION 'CONVERSION_EXIT_AD192_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-SBT03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-SBT03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AD235, internal->external for field SZI03
CALL FUNCTION 'CONVERSION_EXIT_AD235_OUTPUT'
  EXPORTING
    input =                      WA_RFRRD02-SZI03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRRD02-SZI03.
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_RFRRD02_STR, 
KUNNR TYPE STRING,
TTG01 TYPE STRING,
TBT01 TYPE STRING,
TZI01 TYPE STRING,
TTG02 TYPE STRING,
TBT02 TYPE STRING,
TZI02 TYPE STRING,
TTG03 TYPE STRING,
TBT03 TYPE STRING,
TZI03 TYPE STRING,
STG01 TYPE STRING,
SBT01 TYPE STRING,
SZI01 TYPE STRING,
STG02 TYPE STRING,
SBT02 TYPE STRING,
SZI02 TYPE STRING,
STG03 TYPE STRING,
SBT03 TYPE STRING,
SZI03 TYPE STRING,
WERTC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFRRD02_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_RFRRD02_STR-KUNNR sy-vline 
WA_RFRRD02_STR-TTG01 sy-vline 
WA_RFRRD02_STR-TBT01 sy-vline 
WA_RFRRD02_STR-TZI01 sy-vline 
WA_RFRRD02_STR-TTG02 sy-vline 
WA_RFRRD02_STR-TBT02 sy-vline 
WA_RFRRD02_STR-TZI02 sy-vline 
WA_RFRRD02_STR-TTG03 sy-vline 
WA_RFRRD02_STR-TBT03 sy-vline 
WA_RFRRD02_STR-TZI03 sy-vline 
WA_RFRRD02_STR-STG01 sy-vline 
WA_RFRRD02_STR-SBT01 sy-vline 
WA_RFRRD02_STR-SZI01 sy-vline 
WA_RFRRD02_STR-STG02 sy-vline 
WA_RFRRD02_STR-SBT02 sy-vline 
WA_RFRRD02_STR-SZI02 sy-vline 
WA_RFRRD02_STR-STG03 sy-vline 
WA_RFRRD02_STR-SBT03 sy-vline 
WA_RFRRD02_STR-SZI03 sy-vline 
WA_RFRRD02_STR-WERTC sy-vline      INTO ld_text SEPARATED BY SPACE.

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