ABAP Select data from SAP table BBPS_TAXCOM_ITEM_PI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BBPS_TAXCOM_ITEM_PI
*  INTO TABLE @DATA(IT_BBPS_TAXCOM_ITEM_PI2).
*--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_BBPS_TAXCOM_ITEM_PI INDEX 1 INTO DATA(WA_BBPS_TAXCOM_ITEM_PI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BBPS_TAXCOM_ITEM_PI>-GUID = 1.
<BBPS_TAXCOM_ITEM_PI>-STEUC = 1.
<BBPS_TAXCOM_ITEM_PI>-TXREG_SF = 1.
<BBPS_TAXCOM_ITEM_PI>-TXREG_ST = 1.
<BBPS_TAXCOM_ITEM_PI>-XXIPI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BBPS_TAXCOM_ITEM_PI-XICMS, sy-vline,
  WA_BBPS_TAXCOM_ITEM_PI-XSUBT, sy-vline,
  WA_BBPS_TAXCOM_ITEM_PI-TAXBS, sy-vline,
  WA_BBPS_TAXCOM_ITEM_PI-IPISP, sy-vline,
  WA_BBPS_TAXCOM_ITEM_PI-DOCTYP, sy-vline,
  WA_BBPS_TAXCOM_ITEM_PI-MTORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BBPS_TAXCOM_ITEM_PI 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_BBPS_TAXCOM_ITEM_PI 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_BBPS_TAXCOM_ITEM_PI INTO WA_BBPS_TAXCOM_ITEM_PI.


*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 INDUST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BBPS_TAXCOM_ITEM_PI-INDUST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBPS_TAXCOM_ITEM_PI-INDUST.
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_BBPS_TAXCOM_ITEM_PI_STR, 
GUID TYPE STRING,
STEUC TYPE STRING,
TXREG_SF TYPE STRING,
TXREG_ST TYPE STRING,
XXIPI TYPE STRING,
XICMS TYPE STRING,
XSUBT TYPE STRING,
TAXBS TYPE STRING,
IPISP TYPE STRING,
DOCTYP TYPE STRING,
MTORG TYPE STRING,
MTUSE TYPE STRING,
OWNPR TYPE STRING,
BRSCH TYPE STRING,
CITYC TYPE STRING,
INDUST TYPE STRING,
LOC_PR TYPE STRING,
LOC_SR TYPE STRING,
LOC_SE TYPE STRING,
PRODUCT_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BBPS_TAXCOM_ITEM_PI_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_BBPS_TAXCOM_ITEM_PI_STR-GUID sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-STEUC sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-TXREG_SF sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-TXREG_ST sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-XXIPI sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-XICMS sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-XSUBT sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-TAXBS sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-IPISP sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-DOCTYP sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-MTORG sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-MTUSE sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-OWNPR sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-BRSCH sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-CITYC sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-INDUST sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-LOC_PR sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-LOC_SR sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-LOC_SE sy-vline 
WA_BBPS_TAXCOM_ITEM_PI_STR-PRODUCT_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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