ABAP Select data from SAP table KKS06 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKS06 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 KKS06. 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 KKS06 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_KKS06 TYPE STANDARD TABLE OF KKS06,
      WA_KKS06 TYPE KKS06,
      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: <KKS06> TYPE KKS06.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKS06.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKS06
  INTO TABLE IT_KKS06.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKS06
*  INTO TABLE @DATA(IT_KKS062).
*--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_KKS06 INDEX 1 INTO DATA(WA_KKS062).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKS06 ASSIGNING <KKS06>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKS06>-GJAHR = 1.
<KKS06>-POPER = 1.
<KKS06>-FDPER = 1.
<KKS06>-LDPER = 1.
<KKS06>-AJAHR = 1.

ENDLOOP.

LOOP AT IT_KKS06 INTO WA_KKS06.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKS06-ABPER, sy-vline,
  WA_KKS06-EJAHR, sy-vline,
  WA_KKS06-EBPER, sy-vline,
  WA_KKS06-LJAHR, sy-vline,
  WA_KKS06-LBPER, sy-vline,
  WA_KKS06-TJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKS06 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_KKS06 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_KKS06 INTO WA_KKS06.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKS06-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKS06-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field AJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKS06-AJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKS06-AJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field EJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKS06-EJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKS06-EJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKS06-LJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKS06-LJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKS06-TJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKS06-TJAHR.
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_KKS06_STR, 
GJAHR TYPE STRING,
POPER TYPE STRING,
FDPER TYPE STRING,
LDPER TYPE STRING,
AJAHR TYPE STRING,
ABPER TYPE STRING,
EJAHR TYPE STRING,
EBPER TYPE STRING,
LJAHR TYPE STRING,
LBPER TYPE STRING,
TJAHR TYPE STRING,
TBPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKS06_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_KKS06_STR-GJAHR sy-vline 
WA_KKS06_STR-POPER sy-vline 
WA_KKS06_STR-FDPER sy-vline 
WA_KKS06_STR-LDPER sy-vline 
WA_KKS06_STR-AJAHR sy-vline 
WA_KKS06_STR-ABPER sy-vline 
WA_KKS06_STR-EJAHR sy-vline 
WA_KKS06_STR-EBPER sy-vline 
WA_KKS06_STR-LJAHR sy-vline 
WA_KKS06_STR-LBPER sy-vline 
WA_KKS06_STR-TJAHR sy-vline 
WA_KKS06_STR-TBPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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