ABAP Select data from SAP table VCHCLF_S_CSTIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VCHCLF_S_CSTIC
*  INTO TABLE @DATA(IT_VCHCLF_S_CSTIC2).
*--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_VCHCLF_S_CSTIC INDEX 1 INTO DATA(WA_VCHCLF_S_CSTIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VCHCLF_S_CSTIC>-CONTEXT_ID = 1.
<VCHCLF_S_CSTIC>-INSTANCE_ID = 1.
<VCHCLF_S_CSTIC>-GROUP_ID = 1.
<VCHCLF_S_CSTIC>-CSTIC_ID = 1.
<VCHCLF_S_CSTIC>-NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VCHCLF_S_CSTIC-DESCRIPTION, sy-vline,
  WA_VCHCLF_S_CSTIC-CSTIC_FORMAT, sy-vline,
  WA_VCHCLF_S_CSTIC-IS_MANDATORY, sy-vline,
  WA_VCHCLF_S_CSTIC-VALUE_COUNT, sy-vline,
  WA_VCHCLF_S_CSTIC-ADDITIONAL_VALUES_ALLOWED, sy-vline,
  WA_VCHCLF_S_CSTIC-TEMPLATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VCHCLF_S_CSTIC 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_VCHCLF_S_CSTIC 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_VCHCLF_S_CSTIC INTO WA_VCHCLF_S_CSTIC.


*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 LUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VCHCLF_S_CSTIC-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCHCLF_S_CSTIC-UNIT.
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_VCHCLF_S_CSTIC_STR, 
CONTEXT_ID TYPE STRING,
INSTANCE_ID TYPE STRING,
GROUP_ID TYPE STRING,
CSTIC_ID TYPE STRING,
NAME TYPE STRING,
DESCRIPTION TYPE STRING,
CSTIC_FORMAT TYPE STRING,
IS_MANDATORY TYPE STRING,
VALUE_COUNT TYPE STRING,
ADDITIONAL_VALUES_ALLOWED TYPE STRING,
TEMPLATE TYPE STRING,
USE_TEMPLATE TYPE STRING,
HAS_ASSIGNED_VALUE TYPE STRING,
ASSIGNED_VALUE_ID TYPE STRING,
IS_INCONSISTENT TYPE STRING,
HAS_VALUE_CONTRADICTION TYPE STRING,
HAS_LONG_TEXT TYPE STRING,
UNIT TYPE STRING,
NUMBER_OF_CHARACTERS TYPE STRING,
IS_HIDDEN TYPE STRING,
IS_READ_ONLY TYPE STRING,
IS_SINGLE_VALUED TYPE STRING,
IS_INTERVAL_ALLOWED TYPE STRING,
DOMAIN_HAS_INTERVAL_VALUES TYPE STRING,
CHANGE_TIMESTAMP TYPE STRING,
DEP_OBJ_NUMBER TYPE STRING,
HAS_DEFAULT_VALUES TYPE STRING,
HAS_ONLY_OBJ_DEP_VALUES TYPE STRING,
CURRENCY TYPE STRING,
HAS_VALUE_PROPOSAL TYPE STRING,
PROPOSAL_CONFIDENCE TYPE STRING,
SORT_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VCHCLF_S_CSTIC_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_VCHCLF_S_CSTIC_STR-CONTEXT_ID sy-vline 
WA_VCHCLF_S_CSTIC_STR-INSTANCE_ID sy-vline 
WA_VCHCLF_S_CSTIC_STR-GROUP_ID sy-vline 
WA_VCHCLF_S_CSTIC_STR-CSTIC_ID sy-vline 
WA_VCHCLF_S_CSTIC_STR-NAME sy-vline 
WA_VCHCLF_S_CSTIC_STR-DESCRIPTION sy-vline 
WA_VCHCLF_S_CSTIC_STR-CSTIC_FORMAT sy-vline 
WA_VCHCLF_S_CSTIC_STR-IS_MANDATORY sy-vline 
WA_VCHCLF_S_CSTIC_STR-VALUE_COUNT sy-vline 
WA_VCHCLF_S_CSTIC_STR-ADDITIONAL_VALUES_ALLOWED sy-vline 
WA_VCHCLF_S_CSTIC_STR-TEMPLATE sy-vline 
WA_VCHCLF_S_CSTIC_STR-USE_TEMPLATE sy-vline 
WA_VCHCLF_S_CSTIC_STR-HAS_ASSIGNED_VALUE sy-vline 
WA_VCHCLF_S_CSTIC_STR-ASSIGNED_VALUE_ID sy-vline 
WA_VCHCLF_S_CSTIC_STR-IS_INCONSISTENT sy-vline 
WA_VCHCLF_S_CSTIC_STR-HAS_VALUE_CONTRADICTION sy-vline 
WA_VCHCLF_S_CSTIC_STR-HAS_LONG_TEXT sy-vline 
WA_VCHCLF_S_CSTIC_STR-UNIT sy-vline 
WA_VCHCLF_S_CSTIC_STR-NUMBER_OF_CHARACTERS sy-vline 
WA_VCHCLF_S_CSTIC_STR-IS_HIDDEN sy-vline 
WA_VCHCLF_S_CSTIC_STR-IS_READ_ONLY sy-vline 
WA_VCHCLF_S_CSTIC_STR-IS_SINGLE_VALUED sy-vline 
WA_VCHCLF_S_CSTIC_STR-IS_INTERVAL_ALLOWED sy-vline 
WA_VCHCLF_S_CSTIC_STR-DOMAIN_HAS_INTERVAL_VALUES sy-vline 
WA_VCHCLF_S_CSTIC_STR-CHANGE_TIMESTAMP sy-vline 
WA_VCHCLF_S_CSTIC_STR-DEP_OBJ_NUMBER sy-vline 
WA_VCHCLF_S_CSTIC_STR-HAS_DEFAULT_VALUES sy-vline 
WA_VCHCLF_S_CSTIC_STR-HAS_ONLY_OBJ_DEP_VALUES sy-vline 
WA_VCHCLF_S_CSTIC_STR-CURRENCY sy-vline 
WA_VCHCLF_S_CSTIC_STR-HAS_VALUE_PROPOSAL sy-vline 
WA_VCHCLF_S_CSTIC_STR-PROPOSAL_CONFIDENCE sy-vline 
WA_VCHCLF_S_CSTIC_STR-SORT_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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