ABAP Select data from SAP table RK70D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK70D 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 RK70D. 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 RK70D 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_RK70D TYPE STANDARD TABLE OF RK70D,
      WA_RK70D TYPE RK70D,
      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: <RK70D> TYPE RK70D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK70D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK70D
  INTO TABLE IT_RK70D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK70D
*  INTO TABLE @DATA(IT_RK70D2).
*--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_RK70D INDEX 1 INTO DATA(WA_RK70D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK70D ASSIGNING <RK70D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK70D>-KOKRS = 1.
<RK70D>-TVERS = 1.
<RK70D>-KKART = 1.
<RK70D>-ERFDT = 1.
<RK70D>-ERFNM = 1.

ENDLOOP.

LOOP AT IT_RK70D INTO WA_RK70D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK70D-AENDT, sy-vline,
  WA_RK70D-AENNM, sy-vline,
  WA_RK70D-ABSDT, sy-vline,
  WA_RK70D-ABSNM, sy-vline,
  WA_RK70D-STATK, sy-vline,
  WA_RK70D-STRNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK70D 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_RK70D 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_RK70D INTO WA_RK70D.


*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 CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK70D-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70D-MEEHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field UKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RK70D-UKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70D-UKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RK70D-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70D-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field UKURS_NEU
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RK70D-UKURS_NEU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70D-UKURS_NEU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field TKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RK70D-TKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70D-TKURS.
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_RK70D_STR, 
KOKRS TYPE STRING,
TVERS TYPE STRING,
KKART TYPE STRING,
ERFDT TYPE STRING,
ERFNM TYPE STRING,
AENDT TYPE STRING,
AENNM TYPE STRING,
ABSDT TYPE STRING,
ABSNM TYPE STRING,
STATK TYPE STRING,
STRNG TYPE STRING,
PSDAT TYPE STRING,
MENGE TYPE STRING,
MEEHT TYPE STRING,
HWGES TYPE STRING,
FWGES TYPE STRING,
HWAER TYPE STRING,
FWAER TYPE STRING,
UKURS TYPE STRING,
KURST TYPE STRING,
DLFLG TYPE STRING,
TXFLG TYPE STRING,
LOSNEU TYPE STRING,
SPRAS TYPE STRING,
KTEXT TYPE STRING,
LTEXT TYPE STRING,
UKURS_NEU TYPE STRING,
KURST_NEU TYPE STRING,
TWGES TYPE STRING,
TWAER TYPE STRING,
TKURST TYPE STRING,
TKURS TYPE STRING,
LWERT TYPE STRING,
LWAER TYPE STRING,
KRSDT TYPE STRING,
HWGFX TYPE STRING,
FWGFX TYPE STRING,
TWGFX TYPE STRING,
TXTGES TYPE STRING,
TXTFIX TYPE STRING,
KZROH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK70D_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_RK70D_STR-KOKRS sy-vline 
WA_RK70D_STR-TVERS sy-vline 
WA_RK70D_STR-KKART sy-vline 
WA_RK70D_STR-ERFDT sy-vline 
WA_RK70D_STR-ERFNM sy-vline 
WA_RK70D_STR-AENDT sy-vline 
WA_RK70D_STR-AENNM sy-vline 
WA_RK70D_STR-ABSDT sy-vline 
WA_RK70D_STR-ABSNM sy-vline 
WA_RK70D_STR-STATK sy-vline 
WA_RK70D_STR-STRNG sy-vline 
WA_RK70D_STR-PSDAT sy-vline 
WA_RK70D_STR-MENGE sy-vline 
WA_RK70D_STR-MEEHT sy-vline 
WA_RK70D_STR-HWGES sy-vline 
WA_RK70D_STR-FWGES sy-vline 
WA_RK70D_STR-HWAER sy-vline 
WA_RK70D_STR-FWAER sy-vline 
WA_RK70D_STR-UKURS sy-vline 
WA_RK70D_STR-KURST sy-vline 
WA_RK70D_STR-DLFLG sy-vline 
WA_RK70D_STR-TXFLG sy-vline 
WA_RK70D_STR-LOSNEU sy-vline 
WA_RK70D_STR-SPRAS sy-vline 
WA_RK70D_STR-KTEXT sy-vline 
WA_RK70D_STR-LTEXT sy-vline 
WA_RK70D_STR-UKURS_NEU sy-vline 
WA_RK70D_STR-KURST_NEU sy-vline 
WA_RK70D_STR-TWGES sy-vline 
WA_RK70D_STR-TWAER sy-vline 
WA_RK70D_STR-TKURST sy-vline 
WA_RK70D_STR-TKURS sy-vline 
WA_RK70D_STR-LWERT sy-vline 
WA_RK70D_STR-LWAER sy-vline 
WA_RK70D_STR-KRSDT sy-vline 
WA_RK70D_STR-HWGFX sy-vline 
WA_RK70D_STR-FWGFX sy-vline 
WA_RK70D_STR-TWGFX sy-vline 
WA_RK70D_STR-TXTGES sy-vline 
WA_RK70D_STR-TXTFIX sy-vline 
WA_RK70D_STR-KZROH sy-vline      INTO ld_text SEPARATED BY SPACE.

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