ABAP Select data from SAP table KAZY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KAZY
*  INTO TABLE @DATA(IT_KAZY2).
*--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_KAZY INDEX 1 INTO DATA(WA_KAZY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KAZY>-MANDT = 1.
<KAZY>-KAPID = 1.
<KAZY>-VERSN = 1.
<KAZY>-DATUB = 1.
<KAZY>-ANZHL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KAZY-ANZSH, sy-vline,
  WA_KAZY-ANZTG, sy-vline,
  WA_KAZY-FABTG, sy-vline,
  WA_KAZY-NGRAD, sy-vline,
  WA_KAZY-SPROG, sy-vline,
  WA_KAZY-WOTAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KAZY 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_KAZY 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_KAZY INTO WA_KAZY.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_KAZY_STR, 
MANDT TYPE STRING,
KAPID TYPE STRING,
VERSN TYPE STRING,
DATUB TYPE STRING,
ANZHL TYPE STRING,
ANZSH TYPE STRING,
ANZTG TYPE STRING,
FABTG TYPE STRING,
NGRAD TYPE STRING,
SPROG TYPE STRING,
WOTAG TYPE STRING,
KKOPF TYPE STRING,
FIRST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KAZY_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_KAZY_STR-MANDT sy-vline 
WA_KAZY_STR-KAPID sy-vline 
WA_KAZY_STR-VERSN sy-vline 
WA_KAZY_STR-DATUB sy-vline 
WA_KAZY_STR-ANZHL sy-vline 
WA_KAZY_STR-ANZSH sy-vline 
WA_KAZY_STR-ANZTG sy-vline 
WA_KAZY_STR-FABTG sy-vline 
WA_KAZY_STR-NGRAD sy-vline 
WA_KAZY_STR-SPROG sy-vline 
WA_KAZY_STR-WOTAG sy-vline 
WA_KAZY_STR-KKOPF sy-vline 
WA_KAZY_STR-FIRST sy-vline      INTO ld_text SEPARATED BY SPACE.

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