ABAP Select data from SAP table AVZSKOKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVZSKOKO
*  INTO TABLE @DATA(IT_AVZSKOKO2).
*--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_AVZSKOKO INDEX 1 INTO DATA(WA_AVZSKOKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVZSKOKO>-MANDT = 1.
<AVZSKOKO>-RANL = 1.
<AVZSKOKO>-DGUEL_KK = 1.
<AVZSKOKO>-SANLF = 1.
<AVZSKOKO>-SSTATI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVZSKOKO-KZAHLAKT, sy-vline,
  WA_AVZSKOKO-BZAHLAKT, sy-vline,
  WA_AVZSKOKO-DREST, sy-vline,
  WA_AVZSKOKO-SZAHLDIV, sy-vline,
  WA_AVZSKOKO-DDBAB, sy-vline,
  WA_AVZSKOKO-RDIVNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVZSKOKO 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_AVZSKOKO 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_AVZSKOKO INTO WA_AVZSKOKO.


*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 RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AVZSKOKO-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVZSKOKO-RANL.
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_AVZSKOKO_STR, 
MANDT TYPE STRING,
RANL TYPE STRING,
DGUEL_KK TYPE STRING,
SANLF TYPE STRING,
SSTATI TYPE STRING,
KZAHLAKT TYPE STRING,
BZAHLAKT TYPE STRING,
DREST TYPE STRING,
SZAHLDIV TYPE STRING,
DDBAB TYPE STRING,
RDIVNR TYPE STRING,
BAUSGLCH TYPE STRING,
SWHRAUSG TYPE STRING,
DXGUELT TYPE STRING,
DTSCHAB TYPE STRING,
DXTAUSCH TYPE STRING,
ATCHNEN TYPE STRING,
ATSHZAE TYPE STRING,
PWANLRAB TYPE STRING,
JTHESAU TYPE STRING,
DBFRB TYPE STRING,
DBFRV TYPE STRING,
BBPRU TYPE STRING,
RWBZP TYPE STRING,
RWBZP_T TYPE STRING,
DBHAB TYPE STRING,
DBHAV TYPE STRING,
BBVHN TYPE STRING,
BBVHZ TYPE STRING,
BVNJA TYPE STRING,
KREAK TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVZSKOKO_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_AVZSKOKO_STR-MANDT sy-vline 
WA_AVZSKOKO_STR-RANL sy-vline 
WA_AVZSKOKO_STR-DGUEL_KK sy-vline 
WA_AVZSKOKO_STR-SANLF sy-vline 
WA_AVZSKOKO_STR-SSTATI sy-vline 
WA_AVZSKOKO_STR-KZAHLAKT sy-vline 
WA_AVZSKOKO_STR-BZAHLAKT sy-vline 
WA_AVZSKOKO_STR-DREST sy-vline 
WA_AVZSKOKO_STR-SZAHLDIV sy-vline 
WA_AVZSKOKO_STR-DDBAB sy-vline 
WA_AVZSKOKO_STR-RDIVNR sy-vline 
WA_AVZSKOKO_STR-BAUSGLCH sy-vline 
WA_AVZSKOKO_STR-SWHRAUSG sy-vline 
WA_AVZSKOKO_STR-DXGUELT sy-vline 
WA_AVZSKOKO_STR-DTSCHAB sy-vline 
WA_AVZSKOKO_STR-DXTAUSCH sy-vline 
WA_AVZSKOKO_STR-ATCHNEN sy-vline 
WA_AVZSKOKO_STR-ATSHZAE sy-vline 
WA_AVZSKOKO_STR-PWANLRAB sy-vline 
WA_AVZSKOKO_STR-JTHESAU sy-vline 
WA_AVZSKOKO_STR-DBFRB sy-vline 
WA_AVZSKOKO_STR-DBFRV sy-vline 
WA_AVZSKOKO_STR-BBPRU sy-vline 
WA_AVZSKOKO_STR-RWBZP sy-vline 
WA_AVZSKOKO_STR-RWBZP_T sy-vline 
WA_AVZSKOKO_STR-DBHAB sy-vline 
WA_AVZSKOKO_STR-DBHAV sy-vline 
WA_AVZSKOKO_STR-BBVHN sy-vline 
WA_AVZSKOKO_STR-BBVHZ sy-vline 
WA_AVZSKOKO_STR-BVNJA sy-vline 
WA_AVZSKOKO_STR-KREAK sy-vline 
WA_AVZSKOKO_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.