ABAP Select data from SAP table KCTV_VALUES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KCTV_VALUES
*  INTO TABLE @DATA(IT_KCTV_VALUES2).
*--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_KCTV_VALUES INDEX 1 INTO DATA(WA_KCTV_VALUES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KCTV_VALUES>-KOSTL = 1.
<KCTV_VALUES>-LSTAR = 1.
<KCTV_VALUES>-PRZNR = 1.
<KCTV_VALUES>-KSTAR = 1.
<KCTV_VALUES>-RESRC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KCTV_VALUES-STAGR, sy-vline,
  WA_KCTV_VALUES-WKFBTR, sy-vline,
  WA_KCTV_VALUES-WKVBTR, sy-vline,
  WA_KCTV_VALUES-MEFBTR, sy-vline,
  WA_KCTV_VALUES-MEVBTR, sy-vline,
  WA_KCTV_VALUES-XERROR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KCTV_VALUES 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_KCTV_VALUES 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_KCTV_VALUES INTO WA_KCTV_VALUES.


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

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

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

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

*Conversion exit AC152, internal->external for field WKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KCTV_VALUES-WKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCTV_VALUES-WKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKVBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KCTV_VALUES-WKVBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KCTV_VALUES-WKVBTR.
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_KCTV_VALUES_STR, 
KOSTL TYPE STRING,
LSTAR TYPE STRING,
PRZNR TYPE STRING,
KSTAR TYPE STRING,
RESRC TYPE STRING,
STAGR TYPE STRING,
WKFBTR TYPE STRING,
WKVBTR TYPE STRING,
MEFBTR TYPE STRING,
MEVBTR TYPE STRING,
XERROR TYPE STRING,
ROW_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KCTV_VALUES_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_KCTV_VALUES_STR-KOSTL sy-vline 
WA_KCTV_VALUES_STR-LSTAR sy-vline 
WA_KCTV_VALUES_STR-PRZNR sy-vline 
WA_KCTV_VALUES_STR-KSTAR sy-vline 
WA_KCTV_VALUES_STR-RESRC sy-vline 
WA_KCTV_VALUES_STR-STAGR sy-vline 
WA_KCTV_VALUES_STR-WKFBTR sy-vline 
WA_KCTV_VALUES_STR-WKVBTR sy-vline 
WA_KCTV_VALUES_STR-MEFBTR sy-vline 
WA_KCTV_VALUES_STR-MEVBTR sy-vline 
WA_KCTV_VALUES_STR-XERROR sy-vline 
WA_KCTV_VALUES_STR-ROW_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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