ABAP Select data from SAP table KAZA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KAZA
*  INTO TABLE @DATA(IT_KAZA2).
*--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_KAZA INDEX 1 INTO DATA(WA_KAZA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KAZA>-KAPID = 1.
<KAZA>-VERSN = 1.
<KAZA>-DATUV = 1.
<KAZA>-DATUB = 1.
<KAZA>-FLAG_INTERVAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KAZA-ANZSH, sy-vline,
  WA_KAZA-ANZTG, sy-vline,
  WA_KAZA-SPROG, sy-vline,
  WA_KAZA-TPROG, sy-vline,
  WA_KAZA-TAGNR, sy-vline,
  WA_KAZA-WDAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KAZA 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_KAZA 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_KAZA INTO WA_KAZA.


*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 CUNIT, internal->external for field KAPEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KAZA-KAPEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAZA-KAPEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ANG_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KAZA-ANG_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KAZA-ANG_UNIT.
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_KAZA_STR, 
KAPID TYPE STRING,
VERSN TYPE STRING,
DATUV TYPE STRING,
DATUB TYPE STRING,
FLAG_INTERVAL TYPE STRING,
ANZSH TYPE STRING,
ANZTG TYPE STRING,
SPROG TYPE STRING,
TPROG TYPE STRING,
TAGNR TYPE STRING,
WDAY TYPE STRING,
SCHNR TYPE STRING,
ANZHL TYPE STRING,
BEGZT TYPE STRING,
ENDZT TYPE STRING,
FABTG TYPE STRING,
NGRAD TYPE STRING,
KKOPF TYPE STRING,
SEL_FLAG TYPE STRING,
EINZH TYPE STRING,
KAPAZ TYPE STRING,
KAPEH TYPE STRING,
PAUSE TYPE STRING,
ANG_MIN TYPE STRING,
ANG_MAX TYPE STRING,
ANG_UNIT TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
KAPAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KAZA_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_KAZA_STR-KAPID sy-vline 
WA_KAZA_STR-VERSN sy-vline 
WA_KAZA_STR-DATUV sy-vline 
WA_KAZA_STR-DATUB sy-vline 
WA_KAZA_STR-FLAG_INTERVAL sy-vline 
WA_KAZA_STR-ANZSH sy-vline 
WA_KAZA_STR-ANZTG sy-vline 
WA_KAZA_STR-SPROG sy-vline 
WA_KAZA_STR-TPROG sy-vline 
WA_KAZA_STR-TAGNR sy-vline 
WA_KAZA_STR-WDAY sy-vline 
WA_KAZA_STR-SCHNR sy-vline 
WA_KAZA_STR-ANZHL sy-vline 
WA_KAZA_STR-BEGZT sy-vline 
WA_KAZA_STR-ENDZT sy-vline 
WA_KAZA_STR-FABTG sy-vline 
WA_KAZA_STR-NGRAD sy-vline 
WA_KAZA_STR-KKOPF sy-vline 
WA_KAZA_STR-SEL_FLAG sy-vline 
WA_KAZA_STR-EINZH sy-vline 
WA_KAZA_STR-KAPAZ sy-vline 
WA_KAZA_STR-KAPEH sy-vline 
WA_KAZA_STR-PAUSE sy-vline 
WA_KAZA_STR-ANG_MIN sy-vline 
WA_KAZA_STR-ANG_MAX sy-vline 
WA_KAZA_STR-ANG_UNIT sy-vline 
WA_KAZA_STR-ARBPL sy-vline 
WA_KAZA_STR-WERKS sy-vline 
WA_KAZA_STR-KAPAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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