ABAP Select data from SAP table RK70X into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK70X 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 RK70X. 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 RK70X 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_RK70X TYPE STANDARD TABLE OF RK70X,
      WA_RK70X TYPE RK70X,
      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: <RK70X> TYPE RK70X.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK70X.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK70X
  INTO TABLE IT_RK70X.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK70X
*  INTO TABLE @DATA(IT_RK70X2).
*--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_RK70X INDEX 1 INTO DATA(WA_RK70X2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK70X ASSIGNING <RK70X>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK70X>-KATXT = 1.
<RK70X>-HERKT = 1.
<RK70X>-BOTXT = 1.
<RK70X>-PERID = 1.
<RK70X>-FLG_UJP = 1.

ENDLOOP.

LOOP AT IT_RK70X INTO WA_RK70X.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK70X-AKTYP, sy-vline,
  WA_RK70X-KLVAR, sy-vline,
  WA_RK70X-AUART, sy-vline,
  WA_RK70X-AUTYP, sy-vline,
  WA_RK70X-KOSTV, sy-vline,
  WA_RK70X-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK70X 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_RK70X 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_RK70X INTO WA_RK70X.


*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 KOSTV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70X-KOSTV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70X-KOSTV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70X-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70X-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70X-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70X-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70X-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70X-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RK70X-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70X-MATNR.
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_RK70X_STR, 
KATXT TYPE STRING,
HERKT TYPE STRING,
BOTXT TYPE STRING,
PERID TYPE STRING,
FLG_UJP TYPE STRING,
AKTYP TYPE STRING,
KLVAR TYPE STRING,
AUART TYPE STRING,
AUTYP TYPE STRING,
KOSTV TYPE STRING,
WERKS TYPE STRING,
EWKNZ TYPE STRING,
VERSN TYPE STRING,
WRTTP TYPE STRING,
GSBER TYPE STRING,
UEBID TYPE STRING,
KADAT TYPE STRING,
KZBWS TYPE STRING,
PRCTR TYPE STRING,
PATNR TYPE STRING,
MATNR TYPE STRING,
OBART_KOMPONENTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK70X_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_RK70X_STR-KATXT sy-vline 
WA_RK70X_STR-HERKT sy-vline 
WA_RK70X_STR-BOTXT sy-vline 
WA_RK70X_STR-PERID sy-vline 
WA_RK70X_STR-FLG_UJP sy-vline 
WA_RK70X_STR-AKTYP sy-vline 
WA_RK70X_STR-KLVAR sy-vline 
WA_RK70X_STR-AUART sy-vline 
WA_RK70X_STR-AUTYP sy-vline 
WA_RK70X_STR-KOSTV sy-vline 
WA_RK70X_STR-WERKS sy-vline 
WA_RK70X_STR-EWKNZ sy-vline 
WA_RK70X_STR-VERSN sy-vline 
WA_RK70X_STR-WRTTP sy-vline 
WA_RK70X_STR-GSBER sy-vline 
WA_RK70X_STR-UEBID sy-vline 
WA_RK70X_STR-KADAT sy-vline 
WA_RK70X_STR-KZBWS sy-vline 
WA_RK70X_STR-PRCTR sy-vline 
WA_RK70X_STR-PATNR sy-vline 
WA_RK70X_STR-MATNR sy-vline 
WA_RK70X_STR-OBART_KOMPONENTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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