ABAP Select data from SAP table IRATTAB_TAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRATTAB_TAX
*  INTO TABLE @DATA(IT_IRATTAB_TAX2).
*--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_IRATTAB_TAX INDEX 1 INTO DATA(WA_IRATTAB_TAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRATTAB_TAX>-ZTERM = 1.
<IRATTAB_TAX>-SKFBT = 1.
<IRATTAB_TAX>-WRBTR = 1.
<IRATTAB_TAX>-DMBTR = 1.
<IRATTAB_TAX>-DMBE2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRATTAB_TAX-DMBE3, sy-vline,
  WA_IRATTAB_TAX-WSKTO, sy-vline,
  WA_IRATTAB_TAX-SKNTO, sy-vline,
  WA_IRATTAB_TAX-SKNT2, sy-vline,
  WA_IRATTAB_TAX-SKNT3, sy-vline,
  WA_IRATTAB_TAX-PSWBT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRATTAB_TAX 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_IRATTAB_TAX 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_IRATTAB_TAX INTO WA_IRATTAB_TAX.


*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 AU132, internal->external for field SKFBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-SKFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-SKFBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-DMBE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-WSKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNT2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-SKNT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-SKNT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNT3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-SKNT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-SKNT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PSWBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-PSWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-PSWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field QSSHB
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-QSSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-QSSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field QSFBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-QSFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-QSFBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field GBETR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-GBETR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-GBETR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field FDWBT
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-FDWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-FDWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field BLNBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-BLNBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-BLNBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field KLIBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-KLIBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-KLIBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKFBTD
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-SKFBTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-SKFBTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WMWSTD
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-WMWSTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-WMWSTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WMWST
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-WMWST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-WMWST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWSTS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-MWSTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-MWSTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWST2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-MWST2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-MWST2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWST3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-MWST3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-MWST3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PYAMT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-PYAMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-PYAMT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB_TAX-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB_TAX-SAKNR.
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_IRATTAB_TAX_STR, 
ZTERM TYPE STRING,
SKFBT TYPE STRING,
WRBTR TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
WSKTO TYPE STRING,
SKNTO TYPE STRING,
SKNT2 TYPE STRING,
SKNT3 TYPE STRING,
PSWBT TYPE STRING,
QSSHB TYPE STRING,
QSFBT TYPE STRING,
GBETR TYPE STRING,
FDWBT TYPE STRING,
BLNBT TYPE STRING,
KLIBT TYPE STRING,
SKFBTD TYPE STRING,
WMWSTD TYPE STRING,
WMWST TYPE STRING,
MWSTS TYPE STRING,
MWST2 TYPE STRING,
MWST3 TYPE STRING,
PYAMT TYPE STRING,
LFDNR TYPE STRING,
XAUTO TYPE STRING,
BUZEI TYPE STRING,
HKONT TYPE STRING,
SAKNR TYPE STRING,
KOART TYPE STRING,
KTOPL TYPE STRING,
CURTP TYPE STRING,
REFNR TYPE STRING,
KTOSL TYPE STRING,
BUKRS TYPE STRING,
XNEGP TYPE STRING,
BSCHL TYPE STRING,
SHKZG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRATTAB_TAX_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_IRATTAB_TAX_STR-ZTERM sy-vline 
WA_IRATTAB_TAX_STR-SKFBT sy-vline 
WA_IRATTAB_TAX_STR-WRBTR sy-vline 
WA_IRATTAB_TAX_STR-DMBTR sy-vline 
WA_IRATTAB_TAX_STR-DMBE2 sy-vline 
WA_IRATTAB_TAX_STR-DMBE3 sy-vline 
WA_IRATTAB_TAX_STR-WSKTO sy-vline 
WA_IRATTAB_TAX_STR-SKNTO sy-vline 
WA_IRATTAB_TAX_STR-SKNT2 sy-vline 
WA_IRATTAB_TAX_STR-SKNT3 sy-vline 
WA_IRATTAB_TAX_STR-PSWBT sy-vline 
WA_IRATTAB_TAX_STR-QSSHB sy-vline 
WA_IRATTAB_TAX_STR-QSFBT sy-vline 
WA_IRATTAB_TAX_STR-GBETR sy-vline 
WA_IRATTAB_TAX_STR-FDWBT sy-vline 
WA_IRATTAB_TAX_STR-BLNBT sy-vline 
WA_IRATTAB_TAX_STR-KLIBT sy-vline 
WA_IRATTAB_TAX_STR-SKFBTD sy-vline 
WA_IRATTAB_TAX_STR-WMWSTD sy-vline 
WA_IRATTAB_TAX_STR-WMWST sy-vline 
WA_IRATTAB_TAX_STR-MWSTS sy-vline 
WA_IRATTAB_TAX_STR-MWST2 sy-vline 
WA_IRATTAB_TAX_STR-MWST3 sy-vline 
WA_IRATTAB_TAX_STR-PYAMT sy-vline 
WA_IRATTAB_TAX_STR-LFDNR sy-vline 
WA_IRATTAB_TAX_STR-XAUTO sy-vline 
WA_IRATTAB_TAX_STR-BUZEI sy-vline 
WA_IRATTAB_TAX_STR-HKONT sy-vline 
WA_IRATTAB_TAX_STR-SAKNR sy-vline 
WA_IRATTAB_TAX_STR-KOART sy-vline 
WA_IRATTAB_TAX_STR-KTOPL sy-vline 
WA_IRATTAB_TAX_STR-CURTP sy-vline 
WA_IRATTAB_TAX_STR-REFNR sy-vline 
WA_IRATTAB_TAX_STR-KTOSL sy-vline 
WA_IRATTAB_TAX_STR-BUKRS sy-vline 
WA_IRATTAB_TAX_STR-XNEGP sy-vline 
WA_IRATTAB_TAX_STR-BSCHL sy-vline 
WA_IRATTAB_TAX_STR-SHKZG sy-vline      INTO ld_text SEPARATED BY SPACE.

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