ABAP Select data from SAP table K70D0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP K70D0 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 K70D0. 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 K70D0 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_K70D0 TYPE STANDARD TABLE OF K70D0,
      WA_K70D0 TYPE K70D0,
      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: <K70D0> TYPE K70D0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_K70D0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM K70D0
  INTO TABLE IT_K70D0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM K70D0
*  INTO TABLE @DATA(IT_K70D02).
*--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_K70D0 INDEX 1 INTO DATA(WA_K70D02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_K70D0 ASSIGNING <K70D0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<K70D0>-HWGES = 1.
<K70D0>-HWGFX = 1.
<K70D0>-HWAER = 1.
<K70D0>-FWGES = 1.
<K70D0>-FWAER = 1.

ENDLOOP.

LOOP AT IT_K70D0 INTO WA_K70D0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_K70D0-TWAER, sy-vline,
  WA_K70D0-TWGES, sy-vline,
  WA_K70D0-LOSGR, sy-vline,
  WA_K70D0-MEEHT, sy-vline,
  WA_K70D0-PREIS, sy-vline,
  WA_K70D0-PSDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_K70D0 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_K70D0 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_K70D0 INTO WA_K70D0.


*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_K70D0-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_K70D0-MEEHT.
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_K70D0_STR, 
HWGES TYPE STRING,
HWGFX TYPE STRING,
HWAER TYPE STRING,
FWGES TYPE STRING,
FWAER TYPE STRING,
TWAER TYPE STRING,
TWGES TYPE STRING,
LOSGR TYPE STRING,
MEEHT TYPE STRING,
PREIS TYPE STRING,
PSDAT TYPE STRING,
HWWRT_OHNE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_K70D0_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_K70D0_STR-HWGES sy-vline 
WA_K70D0_STR-HWGFX sy-vline 
WA_K70D0_STR-HWAER sy-vline 
WA_K70D0_STR-FWGES sy-vline 
WA_K70D0_STR-FWAER sy-vline 
WA_K70D0_STR-TWAER sy-vline 
WA_K70D0_STR-TWGES sy-vline 
WA_K70D0_STR-LOSGR sy-vline 
WA_K70D0_STR-MEEHT sy-vline 
WA_K70D0_STR-PREIS sy-vline 
WA_K70D0_STR-PSDAT sy-vline 
WA_K70D0_STR-HWWRT_OHNE sy-vline      INTO ld_text SEPARATED BY SPACE.

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