ABAP Select data from SAP table CASH_DOCUMENT_KEY into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CASH_DOCUMENT_KEY
*  INTO TABLE @DATA(IT_CASH_DOCUMENT_KEY2).
*--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_CASH_DOCUMENT_KEY INDEX 1 INTO DATA(WA_CASH_DOCUMENT_KEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CASH_DOCUMENT_KEY>-EBELN = 1.
<CASH_DOCUMENT_KEY>-REFBK = 1.
<CASH_DOCUMENT_KEY>-REFGJ = 1.
<CASH_DOCUMENT_KEY>-REFBT = 1.
<CASH_DOCUMENT_KEY>-REFBN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CASH_DOCUMENT_KEY-WRTTP, sy-vline,
  WA_CASH_DOCUMENT_KEY-AWTYP, sy-vline,
  WA_CASH_DOCUMENT_KEY-AWORG, sy-vline,
  WA_CASH_DOCUMENT_KEY-AWSYS, sy-vline,
  WA_CASH_DOCUMENT_KEY-KBLNR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CASH_DOCUMENT_KEY 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_CASH_DOCUMENT_KEY 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_CASH_DOCUMENT_KEY INTO WA_CASH_DOCUMENT_KEY.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CASH_DOCUMENT_KEY-KBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CASH_DOCUMENT_KEY-KBLNR.
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_CASH_DOCUMENT_KEY_STR, 
EBELN TYPE STRING,
REFBK TYPE STRING,
REFGJ TYPE STRING,
REFBT TYPE STRING,
REFBN TYPE STRING,
WRTTP TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,
AWSYS TYPE STRING,
KBLNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CASH_DOCUMENT_KEY_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_CASH_DOCUMENT_KEY_STR-EBELN sy-vline 
WA_CASH_DOCUMENT_KEY_STR-REFBK sy-vline 
WA_CASH_DOCUMENT_KEY_STR-REFGJ sy-vline 
WA_CASH_DOCUMENT_KEY_STR-REFBT sy-vline 
WA_CASH_DOCUMENT_KEY_STR-REFBN sy-vline 
WA_CASH_DOCUMENT_KEY_STR-WRTTP sy-vline 
WA_CASH_DOCUMENT_KEY_STR-AWTYP sy-vline 
WA_CASH_DOCUMENT_KEY_STR-AWORG sy-vline 
WA_CASH_DOCUMENT_KEY_STR-AWSYS sy-vline 
WA_CASH_DOCUMENT_KEY_STR-KBLNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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