ABAP Select data from SAP table AVITAXR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AVITAXR 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 AVITAXR. 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 AVITAXR 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_AVITAXR TYPE STANDARD TABLE OF AVITAXR,
      WA_AVITAXR TYPE AVITAXR,
      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: <AVITAXR> TYPE AVITAXR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVITAXR
*  INTO TABLE @DATA(IT_AVITAXR2).
*--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_AVITAXR INDEX 1 INTO DATA(WA_AVITAXR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVITAXR>-MANDT = 1.
<AVITAXR>-SBERI = 1.
<AVITAXR>-AWTYP = 1.
<AVITAXR>-AWREF = 1.
<AVITAXR>-AWORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVITAXR-POSNR, sy-vline,
  WA_AVITAXR-DGPLAB, sy-vline,
  WA_AVITAXR-BZDAT, sy-vline,
  WA_AVITAXR-POPTSATZ, sy-vline,
  WA_AVITAXR-BAKHK, sy-vline,
  WA_AVITAXR-MWSKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVITAXR 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_AVITAXR 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_AVITAXR INTO WA_AVITAXR.


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

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_AVITAXR-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVITAXR-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_AVITAXR_STR, 
MANDT TYPE STRING,
SBERI TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
POSNR TYPE STRING,
DGPLAB TYPE STRING,
BZDAT TYPE STRING,
POPTSATZ TYPE STRING,
BAKHK TYPE STRING,
MWSKZ TYPE STRING,
BMWST TYPE STRING,
BABVS TYPE STRING,
BNAVS TYPE STRING,
SSTAT TYPE STRING,
JKUMB TYPE STRING,
SOLLID TYPE STRING,
SGJAHR TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
TXJCD TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVITAXR_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_AVITAXR_STR-MANDT sy-vline 
WA_AVITAXR_STR-SBERI sy-vline 
WA_AVITAXR_STR-AWTYP sy-vline 
WA_AVITAXR_STR-AWREF sy-vline 
WA_AVITAXR_STR-AWORG sy-vline 
WA_AVITAXR_STR-POSNR sy-vline 
WA_AVITAXR_STR-DGPLAB sy-vline 
WA_AVITAXR_STR-BZDAT sy-vline 
WA_AVITAXR_STR-POPTSATZ sy-vline 
WA_AVITAXR_STR-BAKHK sy-vline 
WA_AVITAXR_STR-MWSKZ sy-vline 
WA_AVITAXR_STR-BMWST sy-vline 
WA_AVITAXR_STR-BABVS sy-vline 
WA_AVITAXR_STR-BNAVS sy-vline 
WA_AVITAXR_STR-SSTAT sy-vline 
WA_AVITAXR_STR-JKUMB sy-vline 
WA_AVITAXR_STR-SOLLID sy-vline 
WA_AVITAXR_STR-SGJAHR sy-vline 
WA_AVITAXR_STR-BUKRS sy-vline 
WA_AVITAXR_STR-GJAHR sy-vline 
WA_AVITAXR_STR-TXJCD sy-vline 
WA_AVITAXR_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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