ABAP Select data from SAP table J_1UF_TAX_REGISTER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1UF_TAX_REGISTER 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 J_1UF_TAX_REGISTER. 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 J_1UF_TAX_REGISTER 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_J_1UF_TAX_REGISTER TYPE STANDARD TABLE OF J_1UF_TAX_REGISTER,
      WA_J_1UF_TAX_REGISTER TYPE J_1UF_TAX_REGISTER,
      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: <J_1UF_TAX_REGISTER> TYPE J_1UF_TAX_REGISTER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1UF_TAX_REGISTER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1UF_TAX_REGISTER
  INTO TABLE IT_J_1UF_TAX_REGISTER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1UF_TAX_REGISTER
*  INTO TABLE @DATA(IT_J_1UF_TAX_REGISTER2).
*--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_J_1UF_TAX_REGISTER INDEX 1 INTO DATA(WA_J_1UF_TAX_REGISTER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1UF_TAX_REGISTER ASSIGNING <J_1UF_TAX_REGISTER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1UF_TAX_REGISTER>-BUKRS = 1.
<J_1UF_TAX_REGISTER>-ERR_GROUP = 1.
<J_1UF_TAX_REGISTER>-PARTN = 1.
<J_1UF_TAX_REGISTER>-DOC_TYPE_A = 1.
<J_1UF_TAX_REGISTER>-BLART = 1.

ENDLOOP.

LOOP AT IT_J_1UF_TAX_REGISTER INTO WA_J_1UF_TAX_REGISTER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1UF_TAX_REGISTER-BELNR, sy-vline,
  WA_J_1UF_TAX_REGISTER-GJAHR, sy-vline,
  WA_J_1UF_TAX_REGISTER-BUDAT, sy-vline,
  WA_J_1UF_TAX_REGISTER-STATU, sy-vline,
  WA_J_1UF_TAX_REGISTER-KOART, sy-vline,
  WA_J_1UF_TAX_REGISTER-SHKZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1UF_TAX_REGISTER 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_J_1UF_TAX_REGISTER 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_J_1UF_TAX_REGISTER INTO WA_J_1UF_TAX_REGISTER.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBZG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-REBZG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-REBZG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-REBZJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR_DIF
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR_DIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR_DIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR_SRC
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR_SRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR_SRC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR_TAX
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR_TAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR_TAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR_CLR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR_CLR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR_CLR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR_COR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR_COR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR_COR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR_NTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_TAX_REGISTER-DMBTR_NTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_TAX_REGISTER-DMBTR_NTR.
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_J_1UF_TAX_REGISTER_STR, 
BUKRS TYPE STRING,
ERR_GROUP TYPE STRING,
PARTN TYPE STRING,
DOC_TYPE_A TYPE STRING,
BLART TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
STATU TYPE STRING,
KOART TYPE STRING,
SHKZG TYPE STRING,
DMBTR TYPE STRING,
WAERS TYPE STRING,
AUGBL TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
REBZT TYPE STRING,
EBELN TYPE STRING,
XZAHL TYPE STRING,
DMBTR_DIF TYPE STRING,
DMBTR_SRC TYPE STRING,
DMBTR_TAX TYPE STRING,
DMBTR_CLR TYPE STRING,
DMBTR_COR TYPE STRING,
DMBTR_NTR TYPE STRING,
PATXT TYPE STRING,
UMSKS TYPE STRING,
ZUONR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1UF_TAX_REGISTER_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_J_1UF_TAX_REGISTER_STR-BUKRS sy-vline 
WA_J_1UF_TAX_REGISTER_STR-ERR_GROUP sy-vline 
WA_J_1UF_TAX_REGISTER_STR-PARTN sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DOC_TYPE_A sy-vline 
WA_J_1UF_TAX_REGISTER_STR-BLART sy-vline 
WA_J_1UF_TAX_REGISTER_STR-BELNR sy-vline 
WA_J_1UF_TAX_REGISTER_STR-GJAHR sy-vline 
WA_J_1UF_TAX_REGISTER_STR-BUDAT sy-vline 
WA_J_1UF_TAX_REGISTER_STR-STATU sy-vline 
WA_J_1UF_TAX_REGISTER_STR-KOART sy-vline 
WA_J_1UF_TAX_REGISTER_STR-SHKZG sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR sy-vline 
WA_J_1UF_TAX_REGISTER_STR-WAERS sy-vline 
WA_J_1UF_TAX_REGISTER_STR-AUGBL sy-vline 
WA_J_1UF_TAX_REGISTER_STR-REBZG sy-vline 
WA_J_1UF_TAX_REGISTER_STR-REBZJ sy-vline 
WA_J_1UF_TAX_REGISTER_STR-REBZZ sy-vline 
WA_J_1UF_TAX_REGISTER_STR-REBZT sy-vline 
WA_J_1UF_TAX_REGISTER_STR-EBELN sy-vline 
WA_J_1UF_TAX_REGISTER_STR-XZAHL sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR_DIF sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR_SRC sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR_TAX sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR_CLR sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR_COR sy-vline 
WA_J_1UF_TAX_REGISTER_STR-DMBTR_NTR sy-vline 
WA_J_1UF_TAX_REGISTER_STR-PATXT sy-vline 
WA_J_1UF_TAX_REGISTER_STR-UMSKS sy-vline 
WA_J_1UF_TAX_REGISTER_STR-ZUONR sy-vline      INTO ld_text SEPARATED BY SPACE.

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