ABAP Select data from SAP table PCO_TAX_BUK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCO_TAX_BUK
*  INTO TABLE @DATA(IT_PCO_TAX_BUK2).
*--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_PCO_TAX_BUK INDEX 1 INTO DATA(WA_PCO_TAX_BUK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCO_TAX_BUK>-BUKRS = 1.
<PCO_TAX_BUK>-BUTXT = 1.
<PCO_TAX_BUK>-NITNR = 1.
<PCO_TAX_BUK>-DIGNR = 1.
<PCO_TAX_BUK>-ADRES = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCO_TAX_BUK-TELNR, sy-vline,
  WA_PCO_TAX_BUK-LAND1, sy-vline,
  WA_PCO_TAX_BUK-LANDX, sy-vline,
  WA_PCO_TAX_BUK-BLAND, sy-vline,
  WA_PCO_TAX_BUK-BLANX, sy-vline,
  WA_PCO_TAX_BUK-CITYC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCO_TAX_BUK 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_PCO_TAX_BUK 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_PCO_TAX_BUK INTO WA_PCO_TAX_BUK.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PCO_TAX_BUK-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCO_TAX_BUK-GJAHR.
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_PCO_TAX_BUK_STR, 
BUKRS TYPE STRING,
BUTXT TYPE STRING,
NITNR TYPE STRING,
DIGNR TYPE STRING,
ADRES TYPE STRING,
TELNR TYPE STRING,
LAND1 TYPE STRING,
LANDX TYPE STRING,
BLAND TYPE STRING,
BLANX TYPE STRING,
CITYC TYPE STRING,
CITYX TYPE STRING,
REPLE TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FEEXP TYPE STRING,
GJAHR TYPE STRING,
TNAME TYPE STRING,
TDEAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCO_TAX_BUK_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_PCO_TAX_BUK_STR-BUKRS sy-vline 
WA_PCO_TAX_BUK_STR-BUTXT sy-vline 
WA_PCO_TAX_BUK_STR-NITNR sy-vline 
WA_PCO_TAX_BUK_STR-DIGNR sy-vline 
WA_PCO_TAX_BUK_STR-ADRES sy-vline 
WA_PCO_TAX_BUK_STR-TELNR sy-vline 
WA_PCO_TAX_BUK_STR-LAND1 sy-vline 
WA_PCO_TAX_BUK_STR-LANDX sy-vline 
WA_PCO_TAX_BUK_STR-BLAND sy-vline 
WA_PCO_TAX_BUK_STR-BLANX sy-vline 
WA_PCO_TAX_BUK_STR-CITYC sy-vline 
WA_PCO_TAX_BUK_STR-CITYX sy-vline 
WA_PCO_TAX_BUK_STR-REPLE sy-vline 
WA_PCO_TAX_BUK_STR-BEGDA sy-vline 
WA_PCO_TAX_BUK_STR-ENDDA sy-vline 
WA_PCO_TAX_BUK_STR-FEEXP sy-vline 
WA_PCO_TAX_BUK_STR-GJAHR sy-vline 
WA_PCO_TAX_BUK_STR-TNAME sy-vline 
WA_PCO_TAX_BUK_STR-TDEAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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