ABAP Select data from SAP table RNT60 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNT60 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 RNT60. 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 RNT60 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_RNT60 TYPE STANDARD TABLE OF RNT60,
      WA_RNT60 TYPE RNT60,
      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: <RNT60> TYPE RNT60.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNT60.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNT60
  INTO TABLE IT_RNT60.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNT60
*  INTO TABLE @DATA(IT_RNT602).
*--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_RNT60 INDEX 1 INTO DATA(WA_RNT602).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNT60 ASSIGNING <RNT60>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNT60>-EINRI = 1.
<RNT60>-EINKB = 1.
<RNT60>-KATID = 1.
<RNT60>-KATKB = 1.
<RNT60>-ORGID = 1.

ENDLOOP.

LOOP AT IT_RNT60 INTO WA_RNT60.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNT60-ORGNA, sy-vline,
  WA_RNT60-PLANS, sy-vline,
  WA_RNT60-PLSTX, sy-vline,
  WA_RNT60-VORGANG, sy-vline,
  WA_RNT60-VORGANGTXT, sy-vline,
  WA_RNT60-BEGDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNT60 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_RNT60 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_RNT60 INTO WA_RNT60.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNT60-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNT60-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KATID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNT60-KATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNT60-KATID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNT60-ORGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNT60-ORGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGID_VORL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNT60-ORGID_VORL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNT60-ORGID_VORL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TALST_VON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNT60-TALST_VON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNT60-TALST_VON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TALST_BIS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNT60-TALST_BIS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNT60-TALST_BIS.
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_RNT60_STR, 
EINRI TYPE STRING,
EINKB TYPE STRING,
KATID TYPE STRING,
KATKB TYPE STRING,
ORGID TYPE STRING,
ORGNA TYPE STRING,
PLANS TYPE STRING,
PLSTX TYPE STRING,
VORGANG TYPE STRING,
VORGANGTXT TYPE STRING,
BEGDT TYPE STRING,
ENDDT TYPE STRING,
N1TERVKZ TYPE STRING,
ORGID_VORL TYPE STRING,
ORGNA_VORL TYPE STRING,
PLANS_VORL TYPE STRING,
PLSTX_VORL TYPE STRING,
TALST_VON TYPE STRING,
TALST_BIS TYPE STRING,
KTXT1_VON TYPE STRING,
KTXT1_BIS TYPE STRING,
N1ADMLEI TYPE STRING,
N1MEDLEI TYPE STRING,
N1PFLLEI TYPE STRING,
N1INVALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNT60_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_RNT60_STR-EINRI sy-vline 
WA_RNT60_STR-EINKB sy-vline 
WA_RNT60_STR-KATID sy-vline 
WA_RNT60_STR-KATKB sy-vline 
WA_RNT60_STR-ORGID sy-vline 
WA_RNT60_STR-ORGNA sy-vline 
WA_RNT60_STR-PLANS sy-vline 
WA_RNT60_STR-PLSTX sy-vline 
WA_RNT60_STR-VORGANG sy-vline 
WA_RNT60_STR-VORGANGTXT sy-vline 
WA_RNT60_STR-BEGDT sy-vline 
WA_RNT60_STR-ENDDT sy-vline 
WA_RNT60_STR-N1TERVKZ sy-vline 
WA_RNT60_STR-ORGID_VORL sy-vline 
WA_RNT60_STR-ORGNA_VORL sy-vline 
WA_RNT60_STR-PLANS_VORL sy-vline 
WA_RNT60_STR-PLSTX_VORL sy-vline 
WA_RNT60_STR-TALST_VON sy-vline 
WA_RNT60_STR-TALST_BIS sy-vline 
WA_RNT60_STR-KTXT1_VON sy-vline 
WA_RNT60_STR-KTXT1_BIS sy-vline 
WA_RNT60_STR-N1ADMLEI sy-vline 
WA_RNT60_STR-N1MEDLEI sy-vline 
WA_RNT60_STR-N1PFLLEI sy-vline 
WA_RNT60_STR-N1INVALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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