ABAP Select data from SAP table COMM_CFGDEPVAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMM_CFGDEPVAR
*  INTO TABLE @DATA(IT_COMM_CFGDEPVAR2).
*--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_COMM_CFGDEPVAR INDEX 1 INTO DATA(WA_COMM_CFGDEPVAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMM_CFGDEPVAR>-MANDT = 1.
<COMM_CFGDEPVAR>-KBID = 1.
<COMM_CFGDEPVAR>-NETID = 1.
<COMM_CFGDEPVAR>-NETSTATNR = 1.
<COMM_CFGDEPVAR>-DEPID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMM_CFGDEPVAR-DEPSTATNR, sy-vline,
  WA_COMM_CFGDEPVAR-SYMBOLID, sy-vline,
  WA_COMM_CFGDEPVAR-OBJID, sy-vline,
  WA_COMM_CFGDEPVAR-OBJKBID, sy-vline,
  WA_COMM_CFGDEPVAR-CHARID, sy-vline,
  WA_COMM_CFGDEPVAR-CHARKBID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMM_CFGDEPVAR 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_COMM_CFGDEPVAR 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_COMM_CFGDEPVAR INTO WA_COMM_CFGDEPVAR.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_COMM_CFGDEPVAR_STR, 
MANDT TYPE STRING,
KBID TYPE STRING,
NETID TYPE STRING,
NETSTATNR TYPE STRING,
DEPID TYPE STRING,
DEPSTATNR TYPE STRING,
SYMBOLID TYPE STRING,
OBJID TYPE STRING,
OBJKBID TYPE STRING,
CHARID TYPE STRING,
CHARKBID TYPE STRING,
SPTYPE TYPE STRING,
IOFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMM_CFGDEPVAR_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_COMM_CFGDEPVAR_STR-MANDT sy-vline 
WA_COMM_CFGDEPVAR_STR-KBID sy-vline 
WA_COMM_CFGDEPVAR_STR-NETID sy-vline 
WA_COMM_CFGDEPVAR_STR-NETSTATNR sy-vline 
WA_COMM_CFGDEPVAR_STR-DEPID sy-vline 
WA_COMM_CFGDEPVAR_STR-DEPSTATNR sy-vline 
WA_COMM_CFGDEPVAR_STR-SYMBOLID sy-vline 
WA_COMM_CFGDEPVAR_STR-OBJID sy-vline 
WA_COMM_CFGDEPVAR_STR-OBJKBID sy-vline 
WA_COMM_CFGDEPVAR_STR-CHARID sy-vline 
WA_COMM_CFGDEPVAR_STR-CHARKBID sy-vline 
WA_COMM_CFGDEPVAR_STR-SPTYPE sy-vline 
WA_COMM_CFGDEPVAR_STR-IOFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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