ABAP Select data from SAP table RNG11 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNG11 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 RNG11. 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 RNG11 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_RNG11 TYPE STANDARD TABLE OF RNG11,
      WA_RNG11 TYPE RNG11,
      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: <RNG11> TYPE RNG11.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNG11.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNG11
  INTO TABLE IT_RNG11.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNG11
*  INTO TABLE @DATA(IT_RNG112).
*--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_RNG11 INDEX 1 INTO DATA(WA_RNG112).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNG11 ASSIGNING <RNG11>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNG11>-MANDT = 1.
<RNG11>-KOSTR = 1.
<RNG11>-LNAME = 1.
<RNG11>-KTTYP = 1.
<RNG11>-KTART = 1.

ENDLOOP.

LOOP AT IT_RNG11 INTO WA_RNG11.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNG11-KUTXT, sy-vline,
  WA_RNG11-ZENTR, sy-vline,
  WA_RNG11-KKSNR, sy-vline,
  WA_RNG11-KKSVA, sy-vline,
  WA_RNG11-KVNUM, sy-vline,
  WA_RNG11-KONT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNG11 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_RNG11 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_RNG11 INTO WA_RNG11.


*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 KOSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNG11-KOSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG11-KOSTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNG11-KTART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG11-KTART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZENTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNG11-ZENTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG11-ZENTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KKSNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNG11-KKSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG11-KKSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KKSVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNG11-KKSVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG11-KKSVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KVNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNG11-KVNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG11-KVNUM.
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_RNG11_STR, 
MANDT TYPE STRING,
KOSTR TYPE STRING,
LNAME TYPE STRING,
KTTYP TYPE STRING,
KTART TYPE STRING,
KUTXT TYPE STRING,
ZENTR TYPE STRING,
KKSNR TYPE STRING,
KKSVA TYPE STRING,
KVNUM TYPE STRING,
KONT1 TYPE STRING,
KONT2 TYPE STRING,
KUEVER TYPE STRING,
REBEA TYPE STRING,
SAMRE TYPE STRING,
ZWIAB TYPE STRING,
SORTR TYPE STRING,
ABRLS TYPE STRING,
ENDLS TYPE STRING,
ENDAB TYPE STRING,
SEPRE TYPE STRING,
ABRTG TYPE STRING,
ABRIN TYPE STRING,
RHYTH TYPE STRING,
KUEMAH TYPE STRING,
KUEMF TYPE STRING,
KUEVS TYPE STRING,
KUETX TYPE STRING,
DIADR TYPE STRING,
AAZKZ TYPE STRING,
ENTAZ TYPE STRING,
VKUAN TYPE STRING,
KUANZ TYPE STRING,
PFLZZ TYPE STRING,
VERZZ TYPE STRING,
STTAG TYPE STRING,
WAERS TYPE STRING,
KUALF TYPE STRING,
KUCODE TYPE STRING,
KUTEXT TYPE STRING,
EANR TYPE STRING,
RDRUCK TYPE STRING,
ERDRU TYPE STRING,
SRDRU TYPE STRING,
ESRDRU TYPE STRING,
KRDRU TYPE STRING,
KNULLR TYPE STRING,
TPPROC TYPE STRING,
SVERS TYPE STRING,
ABRLF TYPE STRING,
INSTLKF TYPE STRING,
/ISHFR/COMP_INS TYPE STRING,
/ISHFR/ELSASS TYPE STRING,
/ISHFR/LIMPDVTY TYPE STRING,
/ISHFR/WODAYFR TYPE STRING,
/ISHFR/HIST TYPE STRING,
/ISHFR/COUNC_GEN TYPE STRING,
/ISHFR/HIST_TEXT TYPE STRING,
PSIGN TYPE STRING,
BAG TYPE STRING,
COMTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNG11_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_RNG11_STR-MANDT sy-vline 
WA_RNG11_STR-KOSTR sy-vline 
WA_RNG11_STR-LNAME sy-vline 
WA_RNG11_STR-KTTYP sy-vline 
WA_RNG11_STR-KTART sy-vline 
WA_RNG11_STR-KUTXT sy-vline 
WA_RNG11_STR-ZENTR sy-vline 
WA_RNG11_STR-KKSNR sy-vline 
WA_RNG11_STR-KKSVA sy-vline 
WA_RNG11_STR-KVNUM sy-vline 
WA_RNG11_STR-KONT1 sy-vline 
WA_RNG11_STR-KONT2 sy-vline 
WA_RNG11_STR-KUEVER sy-vline 
WA_RNG11_STR-REBEA sy-vline 
WA_RNG11_STR-SAMRE sy-vline 
WA_RNG11_STR-ZWIAB sy-vline 
WA_RNG11_STR-SORTR sy-vline 
WA_RNG11_STR-ABRLS sy-vline 
WA_RNG11_STR-ENDLS sy-vline 
WA_RNG11_STR-ENDAB sy-vline 
WA_RNG11_STR-SEPRE sy-vline 
WA_RNG11_STR-ABRTG sy-vline 
WA_RNG11_STR-ABRIN sy-vline 
WA_RNG11_STR-RHYTH sy-vline 
WA_RNG11_STR-KUEMAH sy-vline 
WA_RNG11_STR-KUEMF sy-vline 
WA_RNG11_STR-KUEVS sy-vline 
WA_RNG11_STR-KUETX sy-vline 
WA_RNG11_STR-DIADR sy-vline 
WA_RNG11_STR-AAZKZ sy-vline 
WA_RNG11_STR-ENTAZ sy-vline 
WA_RNG11_STR-VKUAN sy-vline 
WA_RNG11_STR-KUANZ sy-vline 
WA_RNG11_STR-PFLZZ sy-vline 
WA_RNG11_STR-VERZZ sy-vline 
WA_RNG11_STR-STTAG sy-vline 
WA_RNG11_STR-WAERS sy-vline 
WA_RNG11_STR-KUALF sy-vline 
WA_RNG11_STR-KUCODE sy-vline 
WA_RNG11_STR-KUTEXT sy-vline 
WA_RNG11_STR-EANR sy-vline 
WA_RNG11_STR-RDRUCK sy-vline 
WA_RNG11_STR-ERDRU sy-vline 
WA_RNG11_STR-SRDRU sy-vline 
WA_RNG11_STR-ESRDRU sy-vline 
WA_RNG11_STR-KRDRU sy-vline 
WA_RNG11_STR-KNULLR sy-vline 
WA_RNG11_STR-TPPROC sy-vline 
WA_RNG11_STR-SVERS sy-vline 
WA_RNG11_STR-ABRLF sy-vline 
WA_RNG11_STR-INSTLKF sy-vline 
WA_RNG11_STR-/ISHFR/COMP_INS sy-vline 
WA_RNG11_STR-/ISHFR/ELSASS sy-vline 
WA_RNG11_STR-/ISHFR/LIMPDVTY sy-vline 
WA_RNG11_STR-/ISHFR/WODAYFR sy-vline 
WA_RNG11_STR-/ISHFR/HIST sy-vline 
WA_RNG11_STR-/ISHFR/COUNC_GEN sy-vline 
WA_RNG11_STR-/ISHFR/HIST_TEXT sy-vline 
WA_RNG11_STR-PSIGN sy-vline 
WA_RNG11_STR-BAG sy-vline 
WA_RNG11_STR-COMTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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