ABAP Select data from SAP table KKAGTKKAZ3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKAGTKKAZ3 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 KKAGTKKAZ3. 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 KKAGTKKAZ3 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_KKAGTKKAZ3 TYPE STANDARD TABLE OF KKAGTKKAZ3,
      WA_KKAGTKKAZ3 TYPE KKAGTKKAZ3,
      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: <KKAGTKKAZ3> TYPE KKAGTKKAZ3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKAGTKKAZ3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKAGTKKAZ3
  INTO TABLE IT_KKAGTKKAZ3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKAGTKKAZ3
*  INTO TABLE @DATA(IT_KKAGTKKAZ32).
*--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_KKAGTKKAZ3 INDEX 1 INTO DATA(WA_KKAGTKKAZ32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKAGTKKAZ3 ASSIGNING <KKAGTKKAZ3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKAGTKKAZ3>-MANDT = 1.
<KKAGTKKAZ3>-KOKRS = 1.
<KKAGTKKAZ3>-KTOPL = 1.
<KKAGTKKAZ3>-VERSA = 1.
<KKAGTKKAZ3>-ABGSL = 1.

ENDLOOP.

LOOP AT IT_KKAGTKKAZ3 INTO WA_KKAGTKKAZ3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKAGTKKAZ3-ZGLAB, sy-vline,
  WA_KKAGTKKAZ3-ZGLAB_END, sy-vline,
  WA_KKAGTKKAZ3-ZGLAB_INT4, sy-vline,
  WA_KKAGTKKAZ3-ZGLAB_END_INT4, sy-vline,
  WA_KKAGTKKAZ3-KOAMK, sy-vline,
  WA_KKAGTKKAZ3-KOAMK_POS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKAGTKKAZ3 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_KKAGTKKAZ3 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_KKAGTKKAZ3 INTO WA_KKAGTKKAZ3.


*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 VERSA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAGTKKAZ3-VERSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ3-VERSA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KKAPJ, internal->external for field ZGLAB
CALL FUNCTION 'CONVERSION_EXIT_KKAPJ_OUTPUT'
  EXPORTING
    input =                      WA_KKAGTKKAZ3-ZGLAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ3-ZGLAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KKAPJ, internal->external for field ZGLAB_END
CALL FUNCTION 'CONVERSION_EXIT_KKAPJ_OUTPUT'
  EXPORTING
    input =                      WA_KKAGTKKAZ3-ZGLAB_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ3-ZGLAB_END.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKAGTKKAZ3-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ3-KSTAR.
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_KKAGTKKAZ3_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
KTOPL TYPE STRING,
VERSA TYPE STRING,
ABGSL TYPE STRING,
ZGLAB TYPE STRING,
ZGLAB_END TYPE STRING,
ZGLAB_INT4 TYPE STRING,
ZGLAB_END_INT4 TYPE STRING,
KOAMK TYPE STRING,
KOAMK_POS TYPE STRING,
KSTAR TYPE STRING,
KRKMK TYPE STRING,
KRKMK_POS TYPE STRING,
KSTMK TYPE STRING,
KSTMK_POS TYPE STRING,
LARMK TYPE STRING,
LARMK_POS TYPE STRING,
PRZMK TYPE STRING,
PRZMK_POS TYPE STRING,
BEKMK TYPE STRING,
VFKMK TYPE STRING,
KYRS1 TYPE STRING,
KYRS1_POS TYPE STRING,
BEMMK TYPE STRING,
BEMMK_POS TYPE STRING,
ZIDAP TYPE STRING,
ZIDAW TYPE STRING,
ZIDNF TYPE STRING,
AWRPZ TYPE STRING,
NAFPZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKAGTKKAZ3_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_KKAGTKKAZ3_STR-MANDT sy-vline 
WA_KKAGTKKAZ3_STR-KOKRS sy-vline 
WA_KKAGTKKAZ3_STR-KTOPL sy-vline 
WA_KKAGTKKAZ3_STR-VERSA sy-vline 
WA_KKAGTKKAZ3_STR-ABGSL sy-vline 
WA_KKAGTKKAZ3_STR-ZGLAB sy-vline 
WA_KKAGTKKAZ3_STR-ZGLAB_END sy-vline 
WA_KKAGTKKAZ3_STR-ZGLAB_INT4 sy-vline 
WA_KKAGTKKAZ3_STR-ZGLAB_END_INT4 sy-vline 
WA_KKAGTKKAZ3_STR-KOAMK sy-vline 
WA_KKAGTKKAZ3_STR-KOAMK_POS sy-vline 
WA_KKAGTKKAZ3_STR-KSTAR sy-vline 
WA_KKAGTKKAZ3_STR-KRKMK sy-vline 
WA_KKAGTKKAZ3_STR-KRKMK_POS sy-vline 
WA_KKAGTKKAZ3_STR-KSTMK sy-vline 
WA_KKAGTKKAZ3_STR-KSTMK_POS sy-vline 
WA_KKAGTKKAZ3_STR-LARMK sy-vline 
WA_KKAGTKKAZ3_STR-LARMK_POS sy-vline 
WA_KKAGTKKAZ3_STR-PRZMK sy-vline 
WA_KKAGTKKAZ3_STR-PRZMK_POS sy-vline 
WA_KKAGTKKAZ3_STR-BEKMK sy-vline 
WA_KKAGTKKAZ3_STR-VFKMK sy-vline 
WA_KKAGTKKAZ3_STR-KYRS1 sy-vline 
WA_KKAGTKKAZ3_STR-KYRS1_POS sy-vline 
WA_KKAGTKKAZ3_STR-BEMMK sy-vline 
WA_KKAGTKKAZ3_STR-BEMMK_POS sy-vline 
WA_KKAGTKKAZ3_STR-ZIDAP sy-vline 
WA_KKAGTKKAZ3_STR-ZIDAW sy-vline 
WA_KKAGTKKAZ3_STR-ZIDNF sy-vline 
WA_KKAGTKKAZ3_STR-AWRPZ sy-vline 
WA_KKAGTKKAZ3_STR-NAFPZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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