ABAP Select data from SAP table AVIK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVIK
*  INTO TABLE @DATA(IT_AVIK2).
*--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_AVIK INDEX 1 INTO DATA(WA_AVIK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVIK>-MANDT = 1.
<AVIK>-BUKRS = 1.
<AVIK>-KOART = 1.
<AVIK>-KONTO = 1.
<AVIK>-AVSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVIK-XAUSG, sy-vline,
  WA_AVIK-VBLNR, sy-vline,
  WA_AVIK-EIKTO, sy-vline,
  WA_AVIK-WAERS, sy-vline,
  WA_AVIK-ZALDT, sy-vline,
  WA_AVIK-RWBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVIK 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_AVIK 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_AVIK INTO WA_AVIK.


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

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

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

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

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

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

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_AVIK-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIK-KURSF.
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_AVIK_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
KOART TYPE STRING,
KONTO TYPE STRING,
AVSID TYPE STRING,
XAUSG TYPE STRING,
VBLNR TYPE STRING,
EIKTO TYPE STRING,
WAERS TYPE STRING,
ZALDT TYPE STRING,
RWBTR TYPE STRING,
RWSKT TYPE STRING,
WEFAE TYPE STRING,
RZAWE TYPE STRING,
ZBNKL TYPE STRING,
ZBNKN TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
AVTXT TYPE STRING,
AVSRT TYPE STRING,
TCODE TYPE STRING,
CPUTM TYPE STRING,
ASTAT TYPE STRING,
XACON TYPE STRING,
XKEEP TYPE STRING,
XUNIQ TYPE STRING,
VRSDG TYPE STRING,
SREGL TYPE STRING,
XBENR TYPE STRING,
XBTYP TYPE STRING,
VGREF TYPE STRING,
PAKOA TYPE STRING,
PAKTO TYPE STRING,
BVDAT TYPE STRING,
BUTIM TYPE STRING,
SPESK TYPE STRING,
VORGC TYPE STRING,
TEXTS TYPE STRING,
ZBNKS TYPE STRING,
ZBSWI TYPE STRING,
KURSF TYPE STRING,
JPDAT TYPE STRING,
CHECT TYPE STRING,
XCONF TYPE STRING,
AVRT2 TYPE STRING,
ZBPRN TYPE STRING,
VALUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVIK_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_AVIK_STR-MANDT sy-vline 
WA_AVIK_STR-BUKRS sy-vline 
WA_AVIK_STR-KOART sy-vline 
WA_AVIK_STR-KONTO sy-vline 
WA_AVIK_STR-AVSID sy-vline 
WA_AVIK_STR-XAUSG sy-vline 
WA_AVIK_STR-VBLNR sy-vline 
WA_AVIK_STR-EIKTO sy-vline 
WA_AVIK_STR-WAERS sy-vline 
WA_AVIK_STR-ZALDT sy-vline 
WA_AVIK_STR-RWBTR sy-vline 
WA_AVIK_STR-RWSKT sy-vline 
WA_AVIK_STR-WEFAE sy-vline 
WA_AVIK_STR-RZAWE sy-vline 
WA_AVIK_STR-ZBNKL sy-vline 
WA_AVIK_STR-ZBNKN sy-vline 
WA_AVIK_STR-ERNAM sy-vline 
WA_AVIK_STR-ERDAT sy-vline 
WA_AVIK_STR-AEDAT sy-vline 
WA_AVIK_STR-AENAM sy-vline 
WA_AVIK_STR-AVTXT sy-vline 
WA_AVIK_STR-AVSRT sy-vline 
WA_AVIK_STR-TCODE sy-vline 
WA_AVIK_STR-CPUTM sy-vline 
WA_AVIK_STR-ASTAT sy-vline 
WA_AVIK_STR-XACON sy-vline 
WA_AVIK_STR-XKEEP sy-vline 
WA_AVIK_STR-XUNIQ sy-vline 
WA_AVIK_STR-VRSDG sy-vline 
WA_AVIK_STR-SREGL sy-vline 
WA_AVIK_STR-XBENR sy-vline 
WA_AVIK_STR-XBTYP sy-vline 
WA_AVIK_STR-VGREF sy-vline 
WA_AVIK_STR-PAKOA sy-vline 
WA_AVIK_STR-PAKTO sy-vline 
WA_AVIK_STR-BVDAT sy-vline 
WA_AVIK_STR-BUTIM sy-vline 
WA_AVIK_STR-SPESK sy-vline 
WA_AVIK_STR-VORGC sy-vline 
WA_AVIK_STR-TEXTS sy-vline 
WA_AVIK_STR-ZBNKS sy-vline 
WA_AVIK_STR-ZBSWI sy-vline 
WA_AVIK_STR-KURSF sy-vline 
WA_AVIK_STR-JPDAT sy-vline 
WA_AVIK_STR-CHECT sy-vline 
WA_AVIK_STR-XCONF sy-vline 
WA_AVIK_STR-AVRT2 sy-vline 
WA_AVIK_STR-ZBPRN sy-vline 
WA_AVIK_STR-VALUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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