ABAP Select data from SAP table RK70K into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK70K 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 RK70K. 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 RK70K 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_RK70K TYPE STANDARD TABLE OF RK70K,
      WA_RK70K TYPE RK70K,
      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: <RK70K> TYPE RK70K.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK70K.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK70K
  INTO TABLE IT_RK70K.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK70K
*  INTO TABLE @DATA(IT_RK70K2).
*--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_RK70K INDEX 1 INTO DATA(WA_RK70K2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK70K ASSIGNING <RK70K>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK70K>-LEDNR = 1.
<RK70K>-BZOBJ = 1.
<RK70K>-KALNR = 1.
<RK70K>-KALKA = 1.
<RK70K>-KADKY = 1.

ENDLOOP.

LOOP AT IT_RK70K INTO WA_RK70K.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK70K-TVERS, sy-vline,
  WA_RK70K-BWVAR, sy-vline,
  WA_RK70K-KKZMA, sy-vline,
  WA_RK70K-KOKRS, sy-vline,
  WA_RK70K-GSBER, sy-vline,
  WA_RK70K-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK70K 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_RK70K 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_RK70K INTO WA_RK70K.


*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_RK70K-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-MEEHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-REF_LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-REF_LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-EXTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-EXTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-KOSTV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-KOSTV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70K-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70K-PRCTR.
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_RK70K_STR, 
LEDNR TYPE STRING,
BZOBJ TYPE STRING,
KALNR TYPE STRING,
KALKA TYPE STRING,
KADKY TYPE STRING,
TVERS TYPE STRING,
BWVAR TYPE STRING,
KKZMA TYPE STRING,
KOKRS TYPE STRING,
GSBER TYPE STRING,
WERKS TYPE STRING,
BUKRS TYPE STRING,
KKART TYPE STRING,
RLDNR TYPE STRING,
ADRSS TYPE STRING,
AKTYP TYPE STRING,
HERKT TYPE STRING,
FWAER TYPE STRING,
KURST TYPE STRING,
MENGE TYPE STRING,
MEEHT TYPE STRING,
GJAHR TYPE STRING,
ZSCHL TYPE STRING,
KALSM TYPE STRING,
TXTUP TYPE STRING,
KRSDT TYPE STRING,
PSDAT TYPE STRING,
RC TYPE STRING,
SAVE_FLG TYPE STRING,
REF_LEDNR TYPE STRING,
REF_BZOBJ TYPE STRING,
REF_KALNR TYPE STRING,
REF_KALKA TYPE STRING,
REF_KADKY TYPE STRING,
REF_TVERS TYPE STRING,
REF_BWVAR TYPE STRING,
REF_KKZMA TYPE STRING,
REF_KOKRS TYPE STRING,
EXTNR TYPE STRING,
AUFNR TYPE STRING,
AUTYP TYPE STRING,
AUART TYPE STRING,
KOSTV TYPE STRING,
KOSTL TYPE STRING,
KSTAR TYPE STRING,
MATNR TYPE STRING,
OBJNR TYPE STRING,
OBART_KOMPONENTE TYPE STRING,
PSANZ_ALT TYPE STRING,
PSANZ_NEU TYPE STRING,
AUFRUFMOD TYPE STRING,
SELUP TYPE STRING,
KKBWVAR TYPE STRING,
TWAER TYPE STRING,
TKURST TYPE STRING,
EWKNZ TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
UEBID TYPE STRING,
KADAT TYPE STRING,
KZBWS TYPE STRING,
PRCTR TYPE STRING,
PATNR TYPE STRING,
KNNZ2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK70K_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_RK70K_STR-LEDNR sy-vline 
WA_RK70K_STR-BZOBJ sy-vline 
WA_RK70K_STR-KALNR sy-vline 
WA_RK70K_STR-KALKA sy-vline 
WA_RK70K_STR-KADKY sy-vline 
WA_RK70K_STR-TVERS sy-vline 
WA_RK70K_STR-BWVAR sy-vline 
WA_RK70K_STR-KKZMA sy-vline 
WA_RK70K_STR-KOKRS sy-vline 
WA_RK70K_STR-GSBER sy-vline 
WA_RK70K_STR-WERKS sy-vline 
WA_RK70K_STR-BUKRS sy-vline 
WA_RK70K_STR-KKART sy-vline 
WA_RK70K_STR-RLDNR sy-vline 
WA_RK70K_STR-ADRSS sy-vline 
WA_RK70K_STR-AKTYP sy-vline 
WA_RK70K_STR-HERKT sy-vline 
WA_RK70K_STR-FWAER sy-vline 
WA_RK70K_STR-KURST sy-vline 
WA_RK70K_STR-MENGE sy-vline 
WA_RK70K_STR-MEEHT sy-vline 
WA_RK70K_STR-GJAHR sy-vline 
WA_RK70K_STR-ZSCHL sy-vline 
WA_RK70K_STR-KALSM sy-vline 
WA_RK70K_STR-TXTUP sy-vline 
WA_RK70K_STR-KRSDT sy-vline 
WA_RK70K_STR-PSDAT sy-vline 
WA_RK70K_STR-RC sy-vline 
WA_RK70K_STR-SAVE_FLG sy-vline 
WA_RK70K_STR-REF_LEDNR sy-vline 
WA_RK70K_STR-REF_BZOBJ sy-vline 
WA_RK70K_STR-REF_KALNR sy-vline 
WA_RK70K_STR-REF_KALKA sy-vline 
WA_RK70K_STR-REF_KADKY sy-vline 
WA_RK70K_STR-REF_TVERS sy-vline 
WA_RK70K_STR-REF_BWVAR sy-vline 
WA_RK70K_STR-REF_KKZMA sy-vline 
WA_RK70K_STR-REF_KOKRS sy-vline 
WA_RK70K_STR-EXTNR sy-vline 
WA_RK70K_STR-AUFNR sy-vline 
WA_RK70K_STR-AUTYP sy-vline 
WA_RK70K_STR-AUART sy-vline 
WA_RK70K_STR-KOSTV sy-vline 
WA_RK70K_STR-KOSTL sy-vline 
WA_RK70K_STR-KSTAR sy-vline 
WA_RK70K_STR-MATNR sy-vline 
WA_RK70K_STR-OBJNR sy-vline 
WA_RK70K_STR-OBART_KOMPONENTE sy-vline 
WA_RK70K_STR-PSANZ_ALT sy-vline 
WA_RK70K_STR-PSANZ_NEU sy-vline 
WA_RK70K_STR-AUFRUFMOD sy-vline 
WA_RK70K_STR-SELUP sy-vline 
WA_RK70K_STR-KKBWVAR sy-vline 
WA_RK70K_STR-TWAER sy-vline 
WA_RK70K_STR-TKURST sy-vline 
WA_RK70K_STR-EWKNZ sy-vline 
WA_RK70K_STR-WRTTP sy-vline 
WA_RK70K_STR-VERSN sy-vline 
WA_RK70K_STR-UEBID sy-vline 
WA_RK70K_STR-KADAT sy-vline 
WA_RK70K_STR-KZBWS sy-vline 
WA_RK70K_STR-PRCTR sy-vline 
WA_RK70K_STR-PATNR sy-vline 
WA_RK70K_STR-KNNZ2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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