ABAP Select data from SAP table FKKWOTAX into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKWOTAX
*  INTO TABLE @DATA(IT_FKKWOTAX2).
*--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_FKKWOTAX INDEX 1 INTO DATA(WA_FKKWOTAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKWOTAX>-OPBEL = 1.
<FKKWOTAX>-OPUPW = 1.
<FKKWOTAX>-OPUPK = 1.
<FKKWOTAX>-OPUPZ = 1.
<FKKWOTAX>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKWOTAX-GSBER, sy-vline,
  WA_FKKWOTAX-SEGMENT, sy-vline,
  WA_FKKWOTAX-BUPLA, sy-vline,
  WA_FKKWOTAX-GPART, sy-vline,
  WA_FKKWOTAX-VKONT, sy-vline,
  WA_FKKWOTAX-VTREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKWOTAX 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_FKKWOTAX 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_FKKWOTAX INTO WA_FKKWOTAX.


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

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

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

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

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

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

*Conversion exit CFOBR, internal->external for field CFOPN
CALL FUNCTION 'CONVERSION_EXIT_CFOBR_OUTPUT'
  EXPORTING
    input =                      WA_FKKWOTAX-CFOPN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKWOTAX-CFOPN.
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_FKKWOTAX_STR, 
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
SEGMENT TYPE STRING,
BUPLA TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
MWSKZ TYPE STRING,
STRKZ TYPE STRING,
TXJCD TYPE STRING,
TXJCO TYPE STRING,
TXCNT TYPE STRING,
TXDAT TYPE STRING,
TXEXK TYPE STRING,
HKONT TYPE STRING,
KTOSL TYPE STRING,
KSCHL TYPE STRING,
STPRZ TYPE STRING,
BETRW TYPE STRING,
SBASW TYPE STRING,
WAERS TYPE STRING,
CFOPN TYPE STRING,
AUGBW TYPE STRING,
AUGBH TYPE STRING,
MWSZKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKWOTAX_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_FKKWOTAX_STR-OPBEL sy-vline 
WA_FKKWOTAX_STR-OPUPW sy-vline 
WA_FKKWOTAX_STR-OPUPK sy-vline 
WA_FKKWOTAX_STR-OPUPZ sy-vline 
WA_FKKWOTAX_STR-BUKRS sy-vline 
WA_FKKWOTAX_STR-GSBER sy-vline 
WA_FKKWOTAX_STR-SEGMENT sy-vline 
WA_FKKWOTAX_STR-BUPLA sy-vline 
WA_FKKWOTAX_STR-GPART sy-vline 
WA_FKKWOTAX_STR-VKONT sy-vline 
WA_FKKWOTAX_STR-VTREF sy-vline 
WA_FKKWOTAX_STR-MWSKZ sy-vline 
WA_FKKWOTAX_STR-STRKZ sy-vline 
WA_FKKWOTAX_STR-TXJCD sy-vline 
WA_FKKWOTAX_STR-TXJCO sy-vline 
WA_FKKWOTAX_STR-TXCNT sy-vline 
WA_FKKWOTAX_STR-TXDAT sy-vline 
WA_FKKWOTAX_STR-TXEXK sy-vline 
WA_FKKWOTAX_STR-HKONT sy-vline 
WA_FKKWOTAX_STR-KTOSL sy-vline 
WA_FKKWOTAX_STR-KSCHL sy-vline 
WA_FKKWOTAX_STR-STPRZ sy-vline 
WA_FKKWOTAX_STR-BETRW sy-vline 
WA_FKKWOTAX_STR-SBASW sy-vline 
WA_FKKWOTAX_STR-WAERS sy-vline 
WA_FKKWOTAX_STR-CFOPN sy-vline 
WA_FKKWOTAX_STR-AUGBW sy-vline 
WA_FKKWOTAX_STR-AUGBH sy-vline 
WA_FKKWOTAX_STR-MWSZKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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