ABAP Select data from SAP table COMT_CFGM_EXT_CFG_PRODUCT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COMT_CFGM_EXT_CFG_PRODUCT 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_CFGM_EXT_CFG_PRODUCT. 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_CFGM_EXT_CFG_PRODUCT 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_CFGM_EXT_CFG_PRODUCT TYPE STANDARD TABLE OF COMT_CFGM_EXT_CFG_PRODUCT,
      WA_COMT_CFGM_EXT_CFG_PRODUCT TYPE COMT_CFGM_EXT_CFG_PRODUCT,
      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_CFGM_EXT_CFG_PRODUCT> TYPE COMT_CFGM_EXT_CFG_PRODUCT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMT_CFGM_EXT_CFG_PRODUCT
*  INTO TABLE @DATA(IT_COMT_CFGM_EXT_CFG_PRODUCT2).
*--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_CFGM_EXT_CFG_PRODUCT INDEX 1 INTO DATA(WA_COMT_CFGM_EXT_CFG_PRODUCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMT_CFGM_EXT_CFG_PRODUCT>-EXT_CONFIG = 1.
<COMT_CFGM_EXT_CFG_PRODUCT>-HEADER = 1.
<COMT_CFGM_EXT_CFG_PRODUCT>-ROOT_ID = 1.
<COMT_CFGM_EXT_CFG_PRODUCT>-SCE = 1.
<COMT_CFGM_EXT_CFG_PRODUCT>-NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMT_CFGM_EXT_CFG_PRODUCT-VERSION, sy-vline,
  WA_COMT_CFGM_EXT_CFG_PRODUCT-LOGSYS, sy-vline,
  WA_COMT_CFGM_EXT_CFG_PRODUCT-PROFILE, sy-vline,
  WA_COMT_CFGM_EXT_CFG_PRODUCT-LANGUAGE, sy-vline,
  WA_COMT_CFGM_EXT_CFG_PRODUCT-COMPLETE, sy-vline,
  WA_COMT_CFGM_EXT_CFG_PRODUCT-CONSISTENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMT_CFGM_EXT_CFG_PRODUCT 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_CFGM_EXT_CFG_PRODUCT 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_CFGM_EXT_CFG_PRODUCT INTO WA_COMT_CFGM_EXT_CFG_PRODUCT.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_CFGM_EXT_CFG_PRODUCT-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_CFGM_EXT_CFG_PRODUCT-LANGUAGE.
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_CFGM_EXT_CFG_PRODUCT_STR, 
EXT_CONFIG TYPE STRING,
HEADER TYPE STRING,
ROOT_ID TYPE STRING,
SCE TYPE STRING,
NAME TYPE STRING,
VERSION TYPE STRING,
LOGSYS TYPE STRING,
PROFILE TYPE STRING,
LANGUAGE TYPE STRING,
COMPLETE TYPE STRING,
CONSISTENT TYPE STRING,
INFO TYPE STRING,
BUILD TYPE STRING,
PART_OF TYPE STRING,
INSTANCES TYPE STRING,
VALUES TYPE STRING,
VARIANT_CONDITIONS TYPE STRING,
EXT_IDS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMT_CFGM_EXT_CFG_PRODUCT_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_CFGM_EXT_CFG_PRODUCT_STR-EXT_CONFIG sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-HEADER sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-ROOT_ID sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-SCE sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-NAME sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-VERSION sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-LOGSYS sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-PROFILE sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-LANGUAGE sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-COMPLETE sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-CONSISTENT sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-INFO sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-BUILD sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-PART_OF sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-INSTANCES sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-VALUES sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-VARIANT_CONDITIONS sy-vline 
WA_COMT_CFGM_EXT_CFG_PRODUCT_STR-EXT_IDS sy-vline      INTO ld_text SEPARATED BY SPACE.

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