ABAP Select data from SAP table COMT_IPC_FIND_KB_FILTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMT_IPC_FIND_KB_FILTER
*  INTO TABLE @DATA(IT_COMT_IPC_FIND_KB_FILTER2).
*--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_COMT_IPC_FIND_KB_FILTER INDEX 1 INTO DATA(WA_COMT_IPC_FIND_KB_FILTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMT_IPC_FIND_KB_FILTER>-KB_KEY = 1.
<COMT_IPC_FIND_KB_FILTER>-NAME = 1.
<COMT_IPC_FIND_KB_FILTER>-LOGSYS = 1.
<COMT_IPC_FIND_KB_FILTER>-VERSION = 1.
<COMT_IPC_FIND_KB_FILTER>-KB_HEADER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMT_IPC_FIND_KB_FILTER-KB_KEY, sy-vline,
  WA_COMT_IPC_FIND_KB_FILTER-NAME, sy-vline,
  WA_COMT_IPC_FIND_KB_FILTER-LOGSYS, sy-vline,
  WA_COMT_IPC_FIND_KB_FILTER-VERSION, sy-vline,
  WA_COMT_IPC_FIND_KB_FILTER-KB_HIERARCHY, sy-vline,
  WA_COMT_IPC_FIND_KB_FILTER-KB_USAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMT_IPC_FIND_KB_FILTER 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_COMT_IPC_FIND_KB_FILTER 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_COMT_IPC_FIND_KB_FILTER INTO WA_COMT_IPC_FIND_KB_FILTER.


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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_IPC_FIND_KB_FILTER-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_IPC_FIND_KB_FILTER-LOGSYS.
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_COMT_IPC_FIND_KB_FILTER_STR, 
KB_KEY TYPE STRING,
NAME TYPE STRING,
LOGSYS TYPE STRING,
VERSION TYPE STRING,
KB_HEADER TYPE STRING,
KB_KEY TYPE STRING,
NAME TYPE STRING,
LOGSYS TYPE STRING,
VERSION TYPE STRING,
KB_HIERARCHY TYPE STRING,
KB_USAGE TYPE STRING,
ORGTYPE TYPE STRING,
ORGID TYPE STRING,
ACTIVE TYPE STRING,
FROMDATE TYPE STRING,
TODATE TYPE STRING,
CREATOR TYPE STRING,
CHANGER TYPE STRING,
CHANGEDATE TYPE STRING,
BUILD TYPE STRING,
STATUS TYPE STRING,
KBID TYPE STRING,
PROFILE TYPE STRING,
CATEGORY TYPE STRING,
HIERARCHY_VERSION TYPE STRING,
KB_PROFILE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMT_IPC_FIND_KB_FILTER_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_COMT_IPC_FIND_KB_FILTER_STR-KB_KEY sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-NAME sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-LOGSYS sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-VERSION sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-KB_HEADER sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-KB_KEY sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-NAME sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-LOGSYS sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-VERSION sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-KB_HIERARCHY sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-KB_USAGE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-ORGTYPE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-ORGID sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-ACTIVE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-FROMDATE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-TODATE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-CREATOR sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-CHANGER sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-CHANGEDATE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-BUILD sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-STATUS sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-KBID sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-PROFILE sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-CATEGORY sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-HIERARCHY_VERSION sy-vline 
WA_COMT_IPC_FIND_KB_FILTER_STR-KB_PROFILE sy-vline      INTO ld_text SEPARATED BY SPACE.

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