ABAP Select data from SAP table KKAGTKKAZ1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKAGTKKAZ1 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 KKAGTKKAZ1. 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 KKAGTKKAZ1 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_KKAGTKKAZ1 TYPE STANDARD TABLE OF KKAGTKKAZ1,
      WA_KKAGTKKAZ1 TYPE KKAGTKKAZ1,
      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: <KKAGTKKAZ1> TYPE KKAGTKKAZ1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKAGTKKAZ1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKAGTKKAZ1
  INTO TABLE IT_KKAGTKKAZ1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKAGTKKAZ1
*  INTO TABLE @DATA(IT_KKAGTKKAZ12).
*--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_KKAGTKKAZ1 INDEX 1 INTO DATA(WA_KKAGTKKAZ12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKAGTKKAZ1 ASSIGNING <KKAGTKKAZ1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKAGTKKAZ1>-MANDT = 1.
<KKAGTKKAZ1>-KOKRS = 1.
<KKAGTKKAZ1>-KTOPL = 1.
<KKAGTKKAZ1>-VERSA = 1.
<KKAGTKKAZ1>-ABGSL = 1.

ENDLOOP.

LOOP AT IT_KKAGTKKAZ1 INTO WA_KKAGTKKAZ1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKAGTKKAZ1-KOAMK, sy-vline,
  WA_KKAGTKKAZ1-KRKMK, sy-vline,
  WA_KKAGTKKAZ1-KSTMK, sy-vline,
  WA_KKAGTKKAZ1-LARMK, sy-vline,
  WA_KKAGTKKAZ1-PRZMK, sy-vline,
  WA_KKAGTKKAZ1-BEKMK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKAGTKKAZ1 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_KKAGTKKAZ1 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_KKAGTKKAZ1 INTO WA_KKAGTKKAZ1.


*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_KKAGTKKAZ1-VERSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ1-VERSA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KKAPJ, internal->external for field ZGLAB
CALL FUNCTION 'CONVERSION_EXIT_KKAPJ_OUTPUT'
  EXPORTING
    input =                      WA_KKAGTKKAZ1-ZGLAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ1-ZGLAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KKAPJ, internal->external for field ZGLAB_END
CALL FUNCTION 'CONVERSION_EXIT_KKAPJ_OUTPUT'
  EXPORTING
    input =                      WA_KKAGTKKAZ1-ZGLAB_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKAGTKKAZ1-ZGLAB_END.
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_KKAGTKKAZ1_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
KTOPL TYPE STRING,
VERSA TYPE STRING,
ABGSL TYPE STRING,
KOAMK TYPE STRING,
KRKMK TYPE STRING,
KSTMK TYPE STRING,
LARMK TYPE STRING,
PRZMK TYPE STRING,
BEKMK TYPE STRING,
VFKMK TYPE STRING,
KYRS1 TYPE STRING,
BEMMK TYPE STRING,
ZGLAB TYPE STRING,
ZIDAP TYPE STRING,
ZIDAW TYPE STRING,
ZIDNF TYPE STRING,
AWRPZ TYPE STRING,
NAFPZ TYPE STRING,
ZGLAB_END TYPE STRING,
KOAMK_POS_MOD TYPE STRING,
KOAMK_POS TYPE STRING,
KRKMK_POS TYPE STRING,
KSTMK_POS TYPE STRING,
LARMK_POS TYPE STRING,
PRZMK_POS TYPE STRING,
KYRS1_POS TYPE STRING,
BEMMK_POS TYPE STRING,
KOAMK_LOW TYPE STRING,
KOAMK_HIGH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKAGTKKAZ1_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_KKAGTKKAZ1_STR-MANDT sy-vline 
WA_KKAGTKKAZ1_STR-KOKRS sy-vline 
WA_KKAGTKKAZ1_STR-KTOPL sy-vline 
WA_KKAGTKKAZ1_STR-VERSA sy-vline 
WA_KKAGTKKAZ1_STR-ABGSL sy-vline 
WA_KKAGTKKAZ1_STR-KOAMK sy-vline 
WA_KKAGTKKAZ1_STR-KRKMK sy-vline 
WA_KKAGTKKAZ1_STR-KSTMK sy-vline 
WA_KKAGTKKAZ1_STR-LARMK sy-vline 
WA_KKAGTKKAZ1_STR-PRZMK sy-vline 
WA_KKAGTKKAZ1_STR-BEKMK sy-vline 
WA_KKAGTKKAZ1_STR-VFKMK sy-vline 
WA_KKAGTKKAZ1_STR-KYRS1 sy-vline 
WA_KKAGTKKAZ1_STR-BEMMK sy-vline 
WA_KKAGTKKAZ1_STR-ZGLAB sy-vline 
WA_KKAGTKKAZ1_STR-ZIDAP sy-vline 
WA_KKAGTKKAZ1_STR-ZIDAW sy-vline 
WA_KKAGTKKAZ1_STR-ZIDNF sy-vline 
WA_KKAGTKKAZ1_STR-AWRPZ sy-vline 
WA_KKAGTKKAZ1_STR-NAFPZ sy-vline 
WA_KKAGTKKAZ1_STR-ZGLAB_END sy-vline 
WA_KKAGTKKAZ1_STR-KOAMK_POS_MOD sy-vline 
WA_KKAGTKKAZ1_STR-KOAMK_POS sy-vline 
WA_KKAGTKKAZ1_STR-KRKMK_POS sy-vline 
WA_KKAGTKKAZ1_STR-KSTMK_POS sy-vline 
WA_KKAGTKKAZ1_STR-LARMK_POS sy-vline 
WA_KKAGTKKAZ1_STR-PRZMK_POS sy-vline 
WA_KKAGTKKAZ1_STR-KYRS1_POS sy-vline 
WA_KKAGTKKAZ1_STR-BEMMK_POS sy-vline 
WA_KKAGTKKAZ1_STR-KOAMK_LOW sy-vline 
WA_KKAGTKKAZ1_STR-KOAMK_HIGH sy-vline      INTO ld_text SEPARATED BY SPACE.

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