ABAP Select data from SAP table ISBUSINESSPARTNERWHLDGTAXWD1_D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISBUSINESSPARTNERWHLDGTAXWD1_D 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 ISBUSINESSPARTNERWHLDGTAXWD1_D. 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 ISBUSINESSPARTNERWHLDGTAXWD1_D 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_ISBUSINESSPARTNERWHLDGTAXWD1_D TYPE STANDARD TABLE OF ISBUSINESSPARTNERWHLDGTAXWD1_D,
      WA_ISBUSINESSPARTNERWHLDGTAXWD1_D TYPE ISBUSINESSPARTNERWHLDGTAXWD1_D,
      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: <ISBUSINESSPARTNERWHLDGTAXWD1_D> TYPE ISBUSINESSPARTNERWHLDGTAXWD1_D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISBUSINESSPARTNERWHLDGTAXWD1_D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISBUSINESSPARTNERWHLDGTAXWD1_D
  INTO TABLE IT_ISBUSINESSPARTNERWHLDGTAXWD1_D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISBUSINESSPARTNERWHLDGTAXWD1_D
*  INTO TABLE @DATA(IT_ISBUSINESSPARTNERWHLDGTAXWD1_D2).
*--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_ISBUSINESSPARTNERWHLDGTAXWD1_D INDEX 1 INTO DATA(WA_ISBUSINESSPARTNERWHLDGTAXWD1_D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISBUSINESSPARTNERWHLDGTAXWD1_D ASSIGNING <ISBUSINESSPARTNERWHLDGTAXWD1_D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISBUSINESSPARTNERWHLDGTAXWD1_D>-HASACTIVEENTITY = 1.
<ISBUSINESSPARTNERWHLDGTAXWD1_D>-ACTIVESUPPLIER = 1.
<ISBUSINESSPARTNERWHLDGTAXWD1_D>-ACTIVECOMPANYCODE = 1.
<ISBUSINESSPARTNERWHLDGTAXWD1_D>-ACTIVEPARTNER = 1.
<ISBUSINESSPARTNERWHLDGTAXWD1_D>-ACTIVEBUSINESSPARTNERUUID = 1.

ENDLOOP.

LOOP AT IT_ISBUSINESSPARTNERWHLDGTAXWD1_D INTO WA_ISBUSINESSPARTNERWHLDGTAXWD1_D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-ACTIVEWITHHOLDINGTAX, sy-vline,
  WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-COUNTRYCODE, sy-vline,
  WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-WITHHOLDINGTAXTYPEFOREDIT, sy-vline,
  WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-WITHHOLDINGTAXTYPE, sy-vline,
  WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-WITHHOLDINGTAXCODE, sy-vline,
  WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-ISWITHHOLDINGTAXSUBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISBUSINESSPARTNERWHLDGTAXWD1_D 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_ISBUSINESSPARTNERWHLDGTAXWD1_D 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_ISBUSINESSPARTNERWHLDGTAXWD1_D INTO WA_ISBUSINESSPARTNERWHLDGTAXWD1_D.


*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 ACTIVESUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-ACTIVESUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-ACTIVESUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACTIVEPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-ACTIVEPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-ACTIVEPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNERFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-BUSINESSPARTNERFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-BUSINESSPARTNERFOREDIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISBUSINESSPARTNERWHLDGTAXWD1_D-BUSINESSPARTNER.
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_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR, 
HASACTIVEENTITY TYPE STRING,
ACTIVESUPPLIER TYPE STRING,
ACTIVECOMPANYCODE TYPE STRING,
ACTIVEPARTNER TYPE STRING,
ACTIVEBUSINESSPARTNERUUID TYPE STRING,
ACTIVEWITHHOLDINGTAX TYPE STRING,
COUNTRYCODE TYPE STRING,
WITHHOLDINGTAXTYPEFOREDIT TYPE STRING,
WITHHOLDINGTAXTYPE TYPE STRING,
WITHHOLDINGTAXCODE TYPE STRING,
ISWITHHOLDINGTAXSUBJECT TYPE STRING,
RECIPIENTTYPE TYPE STRING,
EXEMPTIONDATEBEGIN TYPE STRING,
EXEMPTIONDATEEND TYPE STRING,
EXEMPTIONREASON TYPE STRING,
BUSINESSPARTNERUUID TYPE STRING,
COMPANYCODEFOREDIT TYPE STRING,
COMPANYCODE TYPE STRING,
WITHHOLDINGTAXEXMPTPERCENT TYPE STRING,
WITHHOLDINGTAXCERTIFICATE TYPE STRING,
SUPPLIER TYPE STRING,
BUSINESSPARTNERFOREDIT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
WITHHOLDINGTAXNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_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_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-HASACTIVEENTITY sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-ACTIVESUPPLIER sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-ACTIVECOMPANYCODE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-ACTIVEPARTNER sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-ACTIVEBUSINESSPARTNERUUID sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-ACTIVEWITHHOLDINGTAX sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-COUNTRYCODE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-WITHHOLDINGTAXTYPEFOREDIT sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-WITHHOLDINGTAXTYPE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-WITHHOLDINGTAXCODE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-ISWITHHOLDINGTAXSUBJECT sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-RECIPIENTTYPE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-EXEMPTIONDATEBEGIN sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-EXEMPTIONDATEEND sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-EXEMPTIONREASON sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-BUSINESSPARTNERUUID sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-COMPANYCODEFOREDIT sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-COMPANYCODE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-WITHHOLDINGTAXEXMPTPERCENT sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-WITHHOLDINGTAXCERTIFICATE sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-SUPPLIER sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-BUSINESSPARTNERFOREDIT sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-BUSINESSPARTNER sy-vline 
WA_ISBUSINESSPARTNERWHLDGTAXWD1_D_STR-WITHHOLDINGTAXNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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