ABAP Select data from SAP table RK70L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK70L 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 RK70L. 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 RK70L 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_RK70L TYPE STANDARD TABLE OF RK70L,
      WA_RK70L TYPE RK70L,
      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: <RK70L> TYPE RK70L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK70L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK70L
  INTO TABLE IT_RK70L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK70L
*  INTO TABLE @DATA(IT_RK70L2).
*--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_RK70L INDEX 1 INTO DATA(WA_RK70L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK70L ASSIGNING <RK70L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK70L>-PMARK = 1.
<RK70L>-POSNR = 1.
<RK70L>-TYPPS = 1.
<RK70L>-KSTAR = 1.
<RK70L>-HRKFT = 1.

ENDLOOP.

LOOP AT IT_RK70L INTO WA_RK70L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK70L-ELEMT, sy-vline,
  WA_RK70L-NO_CCSPLIT, sy-vline,
  WA_RK70L-OPCOD, sy-vline,
  WA_RK70L-MENGE, sy-vline,
  WA_RK70L-PMEHT, sy-vline,
  WA_RK70L-MEEHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK70L 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_RK70L 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_RK70L INTO WA_RK70L.


*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 KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70L-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70L-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PMEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK70L-PMEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70L-PMEHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK70L-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70L-MEEHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK70L-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70L-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK70L-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70L-UVORN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field SPOSN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RK70L-SPOSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70L-SPOSN.
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_RK70L_STR, 
PMARK TYPE STRING,
POSNR TYPE STRING,
TYPPS TYPE STRING,
KSTAR TYPE STRING,
HRKFT TYPE STRING,
ELEMT TYPE STRING,
NO_CCSPLIT TYPE STRING,
OPCOD TYPE STRING,
MENGE TYPE STRING,
PMEHT TYPE STRING,
MEEHT TYPE STRING,
LTEXT TYPE STRING,
HERK1 TYPE STRING,
HERK2 TYPE STRING,
HERK3 TYPE STRING,
PSKNZ TYPE STRING,
VTKNZ TYPE STRING,
PRICE_MANUAL TYPE STRING,
LPREIS TYPE STRING,
LWERTB TYPE STRING,
LPEINH TYPE STRING,
LPREIFX TYPE STRING,
LWERTFX TYPE STRING,
ARBPL TYPE STRING,
ARBPLWERK TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
SPOSN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK70L_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_RK70L_STR-PMARK sy-vline 
WA_RK70L_STR-POSNR sy-vline 
WA_RK70L_STR-TYPPS sy-vline 
WA_RK70L_STR-KSTAR sy-vline 
WA_RK70L_STR-HRKFT sy-vline 
WA_RK70L_STR-ELEMT sy-vline 
WA_RK70L_STR-NO_CCSPLIT sy-vline 
WA_RK70L_STR-OPCOD sy-vline 
WA_RK70L_STR-MENGE sy-vline 
WA_RK70L_STR-PMEHT sy-vline 
WA_RK70L_STR-MEEHT sy-vline 
WA_RK70L_STR-LTEXT sy-vline 
WA_RK70L_STR-HERK1 sy-vline 
WA_RK70L_STR-HERK2 sy-vline 
WA_RK70L_STR-HERK3 sy-vline 
WA_RK70L_STR-PSKNZ sy-vline 
WA_RK70L_STR-VTKNZ sy-vline 
WA_RK70L_STR-PRICE_MANUAL sy-vline 
WA_RK70L_STR-LPREIS sy-vline 
WA_RK70L_STR-LWERTB sy-vline 
WA_RK70L_STR-LPEINH sy-vline 
WA_RK70L_STR-LPREIFX sy-vline 
WA_RK70L_STR-LWERTFX sy-vline 
WA_RK70L_STR-ARBPL sy-vline 
WA_RK70L_STR-ARBPLWERK sy-vline 
WA_RK70L_STR-VORNR sy-vline 
WA_RK70L_STR-UVORN sy-vline 
WA_RK70L_STR-SPOSN sy-vline      INTO ld_text SEPARATED BY SPACE.

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