ABAP Select data from SAP table BAPI_RE_TC_CALC_RES_DAT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI_RE_TC_CALC_RES_DAT 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_RE_TC_CALC_RES_DAT. 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_RE_TC_CALC_RES_DAT 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_RE_TC_CALC_RES_DAT TYPE STANDARD TABLE OF BAPI_RE_TC_CALC_RES_DAT,
      WA_BAPI_RE_TC_CALC_RES_DAT TYPE BAPI_RE_TC_CALC_RES_DAT,
      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_RE_TC_CALC_RES_DAT> TYPE BAPI_RE_TC_CALC_RES_DAT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_RE_TC_CALC_RES_DAT
*  INTO TABLE @DATA(IT_BAPI_RE_TC_CALC_RES_DAT2).
*--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_RE_TC_CALC_RES_DAT INDEX 1 INTO DATA(WA_BAPI_RE_TC_CALC_RES_DAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_RE_TC_CALC_RES_DAT>-TC_CALC_TYPE = 1.
<BAPI_RE_TC_CALC_RES_DAT>-TC_KEY_DATE = 1.
<BAPI_RE_TC_CALC_RES_DAT>-TC_YEAR = 1.
<BAPI_RE_TC_CALC_RES_DAT>-TAX_CODE = 1.
<BAPI_RE_TC_CALC_RES_DAT>-CALC_DATE_FROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_RE_TC_CALC_RES_DAT-CALC_DATE_TO, sy-vline,
  WA_BAPI_RE_TC_CALC_RES_DAT-NET_AMOUNT, sy-vline,
  WA_BAPI_RE_TC_CALC_RES_DAT-TAX_AMOUNT, sy-vline,
  WA_BAPI_RE_TC_CALC_RES_DAT-DED_TAX_AMOUNT, sy-vline,
  WA_BAPI_RE_TC_CALC_RES_DAT-NON_DED_TAX_AMOUNT, sy-vline,
  WA_BAPI_RE_TC_CALC_RES_DAT-CALC_DED_TAX_AMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_RE_TC_CALC_RES_DAT 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_RE_TC_CALC_RES_DAT 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_RE_TC_CALC_RES_DAT INTO WA_BAPI_RE_TC_CALC_RES_DAT.


*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_BAPI_RE_TC_CALC_RES_DAT_STR, 
TC_CALC_TYPE TYPE STRING,
TC_KEY_DATE TYPE STRING,
TC_YEAR TYPE STRING,
TAX_CODE TYPE STRING,
CALC_DATE_FROM TYPE STRING,
CALC_DATE_TO TYPE STRING,
NET_AMOUNT TYPE STRING,
TAX_AMOUNT TYPE STRING,
DED_TAX_AMOUNT TYPE STRING,
NON_DED_TAX_AMOUNT TYPE STRING,
CALC_DED_TAX_AMT TYPE STRING,
CALC_NON_DED_TAX_AMT TYPE STRING,
CALC_OPTION_RATE TYPE STRING,
CALC_YEAR_AMOUNT TYPE STRING,
CALC_AMOUNT TYPE STRING,
POST_AMOUNT TYPE STRING,
MINOR_AMOUNT_LIMIT TYPE STRING,
IS_EXTERNAL TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
IGNORE_IN_CALC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_RE_TC_CALC_RES_DAT_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_RE_TC_CALC_RES_DAT_STR-TC_CALC_TYPE sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-TC_KEY_DATE sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-TC_YEAR sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-TAX_CODE sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_DATE_FROM sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_DATE_TO sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-NET_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-TAX_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-DED_TAX_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-NON_DED_TAX_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_DED_TAX_AMT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_NON_DED_TAX_AMT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_OPTION_RATE sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_YEAR_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CALC_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-POST_AMOUNT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-MINOR_AMOUNT_LIMIT sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-IS_EXTERNAL sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CURRENCY sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-CURRENCY_ISO sy-vline 
WA_BAPI_RE_TC_CALC_RES_DAT_STR-IGNORE_IN_CALC sy-vline      INTO ld_text SEPARATED BY SPACE.

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