ABAP Select data from SAP table FIWTKR_S_BUSSINCRECC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIWTKR_S_BUSSINCRECC
*  INTO TABLE @DATA(IT_FIWTKR_S_BUSSINCRECC2).
*--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_FIWTKR_S_BUSSINCRECC INDEX 1 INTO DATA(WA_FIWTKR_S_BUSSINCRECC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIWTKR_S_BUSSINCRECC>-RECORD_CLASSIF = 1.
<FIWTKR_S_BUSSINCRECC>-DATA_CLASSIF = 1.
<FIWTKR_S_BUSSINCRECC>-TAX_OFFICE = 1.
<FIWTKR_S_BUSSINCRECC>-RECORD_NUM = 1.
<FIWTKR_S_BUSSINCRECC>-VAT_REG_NUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIWTKR_S_BUSSINCRECC-VEND_NAME, sy-vline,
  WA_FIWTKR_S_BUSSINCRECC-VEND_VAT_NUM, sy-vline,
  WA_FIWTKR_S_BUSSINCRECC-REP_NAME, sy-vline,
  WA_FIWTKR_S_BUSSINCRECC-FORGEIN_LOC_VEND, sy-vline,
  WA_FIWTKR_S_BUSSINCRECC-VEND_CORP_NUM, sy-vline,
  WA_FIWTKR_S_BUSSINCRECC-RECIPIENT_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIWTKR_S_BUSSINCRECC 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_FIWTKR_S_BUSSINCRECC 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_FIWTKR_S_BUSSINCRECC INTO WA_FIWTKR_S_BUSSINCRECC.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FIWTKR_S_BUSSINCRECC_STR, 
RECORD_CLASSIF TYPE STRING,
DATA_CLASSIF TYPE STRING,
TAX_OFFICE TYPE STRING,
RECORD_NUM TYPE STRING,
VAT_REG_NUM TYPE STRING,
VEND_NAME TYPE STRING,
VEND_VAT_NUM TYPE STRING,
REP_NAME TYPE STRING,
FORGEIN_LOC_VEND TYPE STRING,
VEND_CORP_NUM TYPE STRING,
RECIPIENT_TYPE TYPE STRING,
PAYMENT_DATE TYPE STRING,
YEAR_MONTH TYPE STRING,
SIGN1 TYPE STRING,
BASE_AMT TYPE STRING,
RATE TYPE STRING,
SIGN2 TYPE STRING,
INCOME_TAX TYPE STRING,
SIGN3 TYPE STRING,
INHABITANT_TAX TYPE STRING,
SIGN4 TYPE STRING,
TOTAL_TAX TYPE STRING,
BLANK TYPE STRING,
PAYMENT_DATE2 TYPE STRING,
BLANK2 TYPE STRING,
RESIDENC_IND TYPE STRING,
BLANK3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIWTKR_S_BUSSINCRECC_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_FIWTKR_S_BUSSINCRECC_STR-RECORD_CLASSIF sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-DATA_CLASSIF sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-TAX_OFFICE sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-RECORD_NUM sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-VAT_REG_NUM sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-VEND_NAME sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-VEND_VAT_NUM sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-REP_NAME sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-FORGEIN_LOC_VEND sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-VEND_CORP_NUM sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-RECIPIENT_TYPE sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-PAYMENT_DATE sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-YEAR_MONTH sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-SIGN1 sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-BASE_AMT sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-RATE sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-SIGN2 sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-INCOME_TAX sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-SIGN3 sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-INHABITANT_TAX sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-SIGN4 sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-TOTAL_TAX sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-BLANK sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-PAYMENT_DATE2 sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-BLANK2 sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-RESIDENC_IND sy-vline 
WA_FIWTKR_S_BUSSINCRECC_STR-BLANK3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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