ABAP Select data from SAP table BAPI_FKKPREPACC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_FKKPREPACC
*  INTO TABLE @DATA(IT_BAPI_FKKPREPACC2).
*--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_BAPI_FKKPREPACC INDEX 1 INTO DATA(WA_BAPI_FKKPREPACC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_FKKPREPACC>-BUSPARTNER = 1.
<BAPI_FKKPREPACC>-CONT_ACCT = 1.
<BAPI_FKKPREPACC>-CURRENCY = 1.
<BAPI_FKKPREPACC>-CURRENCY_ISO = 1.
<BAPI_FKKPREPACC>-PLANNED_CLOSE_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_FKKPREPACC-CLOSE_DATE, sy-vline,
  WA_BAPI_FKKPREPACC-MIN_AMOUNT, sy-vline,
  WA_BAPI_FKKPREPACC-USE_LIMIT1_AMOUNT, sy-vline,
  WA_BAPI_FKKPREPACC-LIMIT1_AMOUNT, sy-vline,
  WA_BAPI_FKKPREPACC-USE_LIMIT2_AMOUNT, sy-vline,
  WA_BAPI_FKKPREPACC-LIMIT2_AMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_FKKPREPACC 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_BAPI_FKKPREPACC 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_BAPI_FKKPREPACC INTO WA_BAPI_FKKPREPACC.


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

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

*Conversion exit ALPHA, internal->external for field ALTER_PAYER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_FKKPREPACC-ALTER_PAYER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_FKKPREPACC-ALTER_PAYER.
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_BAPI_FKKPREPACC_STR, 
BUSPARTNER TYPE STRING,
CONT_ACCT TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
PLANNED_CLOSE_DATE TYPE STRING,
CLOSE_DATE TYPE STRING,
MIN_AMOUNT TYPE STRING,
USE_LIMIT1_AMOUNT TYPE STRING,
LIMIT1_AMOUNT TYPE STRING,
USE_LIMIT2_AMOUNT TYPE STRING,
LIMIT2_AMOUNT TYPE STRING,
USE_LIMIT3_AMOUNT TYPE STRING,
LIMIT3_AMOUNT TYPE STRING,
ALTER_PAYER TYPE STRING,
PAYMENT_BY TYPE STRING,
BANK_INC TYPE STRING,
CCARD_INC TYPE STRING,
CC_TYPE TYPE STRING,
CC_NUMBER TYPE STRING,
CC_NAME TYPE STRING,
CC_VALID_F TYPE STRING,
CC_VALID_T TYPE STRING,
SEPA_MANDATE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_FKKPREPACC_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_BAPI_FKKPREPACC_STR-BUSPARTNER sy-vline 
WA_BAPI_FKKPREPACC_STR-CONT_ACCT sy-vline 
WA_BAPI_FKKPREPACC_STR-CURRENCY sy-vline 
WA_BAPI_FKKPREPACC_STR-CURRENCY_ISO sy-vline 
WA_BAPI_FKKPREPACC_STR-PLANNED_CLOSE_DATE sy-vline 
WA_BAPI_FKKPREPACC_STR-CLOSE_DATE sy-vline 
WA_BAPI_FKKPREPACC_STR-MIN_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-USE_LIMIT1_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-LIMIT1_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-USE_LIMIT2_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-LIMIT2_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-USE_LIMIT3_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-LIMIT3_AMOUNT sy-vline 
WA_BAPI_FKKPREPACC_STR-ALTER_PAYER sy-vline 
WA_BAPI_FKKPREPACC_STR-PAYMENT_BY sy-vline 
WA_BAPI_FKKPREPACC_STR-BANK_INC sy-vline 
WA_BAPI_FKKPREPACC_STR-CCARD_INC sy-vline 
WA_BAPI_FKKPREPACC_STR-CC_TYPE sy-vline 
WA_BAPI_FKKPREPACC_STR-CC_NUMBER sy-vline 
WA_BAPI_FKKPREPACC_STR-CC_NAME sy-vline 
WA_BAPI_FKKPREPACC_STR-CC_VALID_F sy-vline 
WA_BAPI_FKKPREPACC_STR-CC_VALID_T sy-vline 
WA_BAPI_FKKPREPACC_STR-SEPA_MANDATE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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