ABAP Select data from SAP table RNG13X into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNG13X 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 RNG13X. 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 RNG13X 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_RNG13X TYPE STANDARD TABLE OF RNG13X,
      WA_RNG13X TYPE RNG13X,
      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: <RNG13X> TYPE RNG13X.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNG13X.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNG13X
  INTO TABLE IT_RNG13X.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNG13X
*  INTO TABLE @DATA(IT_RNG13X2).
*--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_RNG13X INDEX 1 INTO DATA(WA_RNG13X2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNG13X ASSIGNING <RNG13X>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNG13X>-LFDNR = 1.
<RNG13X>-KUNNR = 1.
<RNG13X>-LFDBV = 1.
<RNG13X>-AKTION = 1.
<RNG13X>-AKSTAT = 1.

ENDLOOP.

LOOP AT IT_RNG13X INTO WA_RNG13X.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNG13X-BANKS, sy-vline,
  WA_RNG13X-BANKS_X, sy-vline,
  WA_RNG13X-BANKL, sy-vline,
  WA_RNG13X-BANKL_X, sy-vline,
  WA_RNG13X-BANKN, sy-vline,
  WA_RNG13X-BANKN_X, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNG13X 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_RNG13X 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_RNG13X INTO WA_RNG13X.


*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_RNG13X-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNG13X-KUNNR.
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_RNG13X_STR, 
LFDNR TYPE STRING,
KUNNR TYPE STRING,
LFDBV TYPE STRING,
AKTION TYPE STRING,
AKSTAT TYPE STRING,
BANKS TYPE STRING,
BANKS_X TYPE STRING,
BANKL TYPE STRING,
BANKL_X TYPE STRING,
BANKN TYPE STRING,
BANKN_X TYPE STRING,
XEZER TYPE STRING,
XEZER_X TYPE STRING,
BKONT TYPE STRING,
BKONT_X TYPE STRING,
INSERT TYPE STRING,
INSERT_X TYPE STRING,
BANKA TYPE STRING,
BANKA_X TYPE STRING,
PROVZ TYPE STRING,
PROVZ_X TYPE STRING,
STRAS TYPE STRING,
STRAS_X TYPE STRING,
ORT01 TYPE STRING,
ORT01_X TYPE STRING,
SWIFT TYPE STRING,
SWIFT_X TYPE STRING,
BGRUP TYPE STRING,
BGRUP_X TYPE STRING,
XPGRO TYPE STRING,
XPGRO_X TYPE STRING,
BVTYP TYPE STRING,
BVTYP_X TYPE STRING,
BKREF TYPE STRING,
BKREF_X TYPE STRING,
KOINH TYPE STRING,
KOINH_X TYPE STRING,
IBAN TYPE STRING,
IBAN_X TYPE STRING,
IBAN_DATE TYPE STRING,
IBAN_DATE_X TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNG13X_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_RNG13X_STR-LFDNR sy-vline 
WA_RNG13X_STR-KUNNR sy-vline 
WA_RNG13X_STR-LFDBV sy-vline 
WA_RNG13X_STR-AKTION sy-vline 
WA_RNG13X_STR-AKSTAT sy-vline 
WA_RNG13X_STR-BANKS sy-vline 
WA_RNG13X_STR-BANKS_X sy-vline 
WA_RNG13X_STR-BANKL sy-vline 
WA_RNG13X_STR-BANKL_X sy-vline 
WA_RNG13X_STR-BANKN sy-vline 
WA_RNG13X_STR-BANKN_X sy-vline 
WA_RNG13X_STR-XEZER sy-vline 
WA_RNG13X_STR-XEZER_X sy-vline 
WA_RNG13X_STR-BKONT sy-vline 
WA_RNG13X_STR-BKONT_X sy-vline 
WA_RNG13X_STR-INSERT sy-vline 
WA_RNG13X_STR-INSERT_X sy-vline 
WA_RNG13X_STR-BANKA sy-vline 
WA_RNG13X_STR-BANKA_X sy-vline 
WA_RNG13X_STR-PROVZ sy-vline 
WA_RNG13X_STR-PROVZ_X sy-vline 
WA_RNG13X_STR-STRAS sy-vline 
WA_RNG13X_STR-STRAS_X sy-vline 
WA_RNG13X_STR-ORT01 sy-vline 
WA_RNG13X_STR-ORT01_X sy-vline 
WA_RNG13X_STR-SWIFT sy-vline 
WA_RNG13X_STR-SWIFT_X sy-vline 
WA_RNG13X_STR-BGRUP sy-vline 
WA_RNG13X_STR-BGRUP_X sy-vline 
WA_RNG13X_STR-XPGRO sy-vline 
WA_RNG13X_STR-XPGRO_X sy-vline 
WA_RNG13X_STR-BVTYP sy-vline 
WA_RNG13X_STR-BVTYP_X sy-vline 
WA_RNG13X_STR-BKREF sy-vline 
WA_RNG13X_STR-BKREF_X sy-vline 
WA_RNG13X_STR-KOINH sy-vline 
WA_RNG13X_STR-KOINH_X sy-vline 
WA_RNG13X_STR-IBAN sy-vline 
WA_RNG13X_STR-IBAN_X sy-vline 
WA_RNG13X_STR-IBAN_DATE sy-vline 
WA_RNG13X_STR-IBAN_DATE_X sy-vline      INTO ld_text SEPARATED BY SPACE.

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