ABAP Select data from SAP table FKKRDI_PAYMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKRDI_PAYMENT
*  INTO TABLE @DATA(IT_FKKRDI_PAYMENT2).
*--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_FKKRDI_PAYMENT INDEX 1 INTO DATA(WA_FKKRDI_PAYMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKRDI_PAYMENT>-AUGBL = 1.
<FKKRDI_PAYMENT>-AUGDT = 1.
<FKKRDI_PAYMENT>-AUGBD = 1.
<FKKRDI_PAYMENT>-AUGVD = 1.
<FKKRDI_PAYMENT>-AUGRD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKRDI_PAYMENT-FAEDN, sy-vline,
  WA_FKKRDI_PAYMENT-STUDT, sy-vline,
  WA_FKKRDI_PAYMENT-AUGBT, sy-vline,
  WA_FKKRDI_PAYMENT-AUGWA, sy-vline,
  WA_FKKRDI_PAYMENT-FAEDS, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FKKRDI_PAYMENT 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_FKKRDI_PAYMENT 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_FKKRDI_PAYMENT INTO WA_FKKRDI_PAYMENT.


*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 AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKRDI_PAYMENT-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKRDI_PAYMENT-AUGBL.
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_FKKRDI_PAYMENT_STR, 
AUGBL TYPE STRING,
AUGDT TYPE STRING,
AUGBD TYPE STRING,
AUGVD TYPE STRING,
AUGRD TYPE STRING,
FAEDN TYPE STRING,
STUDT TYPE STRING,
AUGBT TYPE STRING,
AUGWA TYPE STRING,
FAEDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKRDI_PAYMENT_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_FKKRDI_PAYMENT_STR-AUGBL sy-vline 
WA_FKKRDI_PAYMENT_STR-AUGDT sy-vline 
WA_FKKRDI_PAYMENT_STR-AUGBD sy-vline 
WA_FKKRDI_PAYMENT_STR-AUGVD sy-vline 
WA_FKKRDI_PAYMENT_STR-AUGRD sy-vline 
WA_FKKRDI_PAYMENT_STR-FAEDN sy-vline 
WA_FKKRDI_PAYMENT_STR-STUDT sy-vline 
WA_FKKRDI_PAYMENT_STR-AUGBT sy-vline 
WA_FKKRDI_PAYMENT_STR-AUGWA sy-vline 
WA_FKKRDI_PAYMENT_STR-FAEDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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