ABAP Select data from SAP table RKCOKRC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RKCOKRC
*  INTO TABLE @DATA(IT_RKCOKRC2).
*--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_RKCOKRC INDEX 1 INTO DATA(WA_RKCOKRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RKCOKRC>-MANDT = 1.
<RKCOKRC>-LEDNR = 1.
<RKCOKRC>-OBJNR = 1.
<RKCOKRC>-GJAHR = 1.
<RKCOKRC>-WRTTP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RKCOKRC-VERSN, sy-vline,
  WA_RKCOKRC-STAGR, sy-vline,
  WA_RKCOKRC-VRGNG, sy-vline,
  WA_RKCOKRC-WSSME, sy-vline,
  WA_RKCOKRC-WSSMA, sy-vline,
  WA_RKCOKRC-FMSME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RKCOKRC 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_RKCOKRC 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_RKCOKRC INTO WA_RKCOKRC.


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

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

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

*Conversion exit ALPHA, internal->external for field VARIANTE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RKCOKRC-VARIANTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCOKRC-VARIANTE.
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_RKCOKRC_STR, 
MANDT TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
STAGR TYPE STRING,
VRGNG TYPE STRING,
WSSME TYPE STRING,
WSSMA TYPE STRING,
FMSME TYPE STRING,
FMSMA TYPE STRING,
FCSME TYPE STRING,
FCSMA TYPE STRING,
TXFLG TYPE STRING,
KKART TYPE STRING,
KALNR TYPE STRING,
VARIANTE TYPE STRING,
M_PLAN TYPE STRING,
M_IST TYPE STRING,
S_BEZEI TYPE STRING,
O_BEZEI TYPE STRING,
O_TYPE TYPE STRING,
ACT TYPE STRING,
OBART TYPE STRING,
KOKRS TYPE STRING,
VTEXT TYPE STRING,
OBJLEN TYPE STRING,
VERSNTXT TYPE STRING,
KOKRSTXT TYPE STRING,
O_TEXT TYPE STRING,
REF_FIELD TYPE STRING,
REF_DATEL TYPE STRING,
WERT_FLAG TYPE STRING,
D_STRUCT TYPE STRING,
LSTARTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RKCOKRC_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_RKCOKRC_STR-MANDT sy-vline 
WA_RKCOKRC_STR-LEDNR sy-vline 
WA_RKCOKRC_STR-OBJNR sy-vline 
WA_RKCOKRC_STR-GJAHR sy-vline 
WA_RKCOKRC_STR-WRTTP sy-vline 
WA_RKCOKRC_STR-VERSN sy-vline 
WA_RKCOKRC_STR-STAGR sy-vline 
WA_RKCOKRC_STR-VRGNG sy-vline 
WA_RKCOKRC_STR-WSSME sy-vline 
WA_RKCOKRC_STR-WSSMA sy-vline 
WA_RKCOKRC_STR-FMSME sy-vline 
WA_RKCOKRC_STR-FMSMA sy-vline 
WA_RKCOKRC_STR-FCSME sy-vline 
WA_RKCOKRC_STR-FCSMA sy-vline 
WA_RKCOKRC_STR-TXFLG sy-vline 
WA_RKCOKRC_STR-KKART sy-vline 
WA_RKCOKRC_STR-KALNR sy-vline 
WA_RKCOKRC_STR-VARIANTE sy-vline 
WA_RKCOKRC_STR-M_PLAN sy-vline 
WA_RKCOKRC_STR-M_IST sy-vline 
WA_RKCOKRC_STR-S_BEZEI sy-vline 
WA_RKCOKRC_STR-O_BEZEI sy-vline 
WA_RKCOKRC_STR-O_TYPE sy-vline 
WA_RKCOKRC_STR-ACT sy-vline 
WA_RKCOKRC_STR-OBART sy-vline 
WA_RKCOKRC_STR-KOKRS sy-vline 
WA_RKCOKRC_STR-VTEXT sy-vline 
WA_RKCOKRC_STR-OBJLEN sy-vline 
WA_RKCOKRC_STR-VERSNTXT sy-vline 
WA_RKCOKRC_STR-KOKRSTXT sy-vline 
WA_RKCOKRC_STR-O_TEXT sy-vline 
WA_RKCOKRC_STR-REF_FIELD sy-vline 
WA_RKCOKRC_STR-REF_DATEL sy-vline 
WA_RKCOKRC_STR-WERT_FLAG sy-vline 
WA_RKCOKRC_STR-D_STRUCT sy-vline 
WA_RKCOKRC_STR-LSTARTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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