ABAP Select data from SAP table KCK996 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KCK996 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 KCK996. 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 KCK996 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_KCK996 TYPE STANDARD TABLE OF KCK996,
      WA_KCK996 TYPE KCK996,
      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: <KCK996> TYPE KCK996.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KCK996.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KCK996
  INTO TABLE IT_KCK996.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KCK996
*  INTO TABLE @DATA(IT_KCK9962).
*--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_KCK996 INDEX 1 INTO DATA(WA_KCK9962).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KCK996 ASSIGNING <KCK996>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KCK996>-MANDT = 1.
<KCK996>-RECNR = 1.
<KCK996>-VERSIO = 1.
<KCK996>-PLACTI = 1.
<KCK996>-YEARB = 1.

ENDLOOP.

LOOP AT IT_KCK996 INTO WA_KCK996.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KCK996-PERDE, sy-vline,
  WA_KCK996-KEYFIG, sy-vline,
  WA_KCK996-COBJID, sy-vline,
  WA_KCK996-LANGU, sy-vline,
  WA_KCK996-BUKRS1, sy-vline,
  WA_KCK996-CNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KCK996 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_KCK996 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_KCK996 INTO WA_KCK996.


*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 VERSIO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KCK996-VERSIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCK996-VERSIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YEARB
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KCK996-YEARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCK996-YEARB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KCK996-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCK996-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTNM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KCK996-CUSTNM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCK996-CUSTNM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KCK996-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCK996-MATNR.
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_KCK996_STR, 
MANDT TYPE STRING,
RECNR TYPE STRING,
VERSIO TYPE STRING,
PLACTI TYPE STRING,
YEARB TYPE STRING,
PERDE TYPE STRING,
KEYFIG TYPE STRING,
COBJID TYPE STRING,
LANGU TYPE STRING,
BUKRS1 TYPE STRING,
CNTRY TYPE STRING,
CUSTNM TYPE STRING,
ESPART TYPE STRING,
MATNR TYPE STRING,
BZIRK TYPE STRING,
XCUKY TYPE STRING,
XMAYO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KCK996_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_KCK996_STR-MANDT sy-vline 
WA_KCK996_STR-RECNR sy-vline 
WA_KCK996_STR-VERSIO sy-vline 
WA_KCK996_STR-PLACTI sy-vline 
WA_KCK996_STR-YEARB sy-vline 
WA_KCK996_STR-PERDE sy-vline 
WA_KCK996_STR-KEYFIG sy-vline 
WA_KCK996_STR-COBJID sy-vline 
WA_KCK996_STR-LANGU sy-vline 
WA_KCK996_STR-BUKRS1 sy-vline 
WA_KCK996_STR-CNTRY sy-vline 
WA_KCK996_STR-CUSTNM sy-vline 
WA_KCK996_STR-ESPART sy-vline 
WA_KCK996_STR-MATNR sy-vline 
WA_KCK996_STR-BZIRK sy-vline 
WA_KCK996_STR-XCUKY sy-vline 
WA_KCK996_STR-XMAYO sy-vline      INTO ld_text SEPARATED BY SPACE.

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