ABAP Select data from SAP table COMM_CFGDEP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COMM_CFGDEP 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_CFGDEP. 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_CFGDEP 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_CFGDEP TYPE STANDARD TABLE OF COMM_CFGDEP,
      WA_COMM_CFGDEP TYPE COMM_CFGDEP,
      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_CFGDEP> TYPE COMM_CFGDEP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMM_CFGDEP
*  INTO TABLE @DATA(IT_COMM_CFGDEP2).
*--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_CFGDEP INDEX 1 INTO DATA(WA_COMM_CFGDEP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMM_CFGDEP>-MANDT = 1.
<COMM_CFGDEP>-KBID = 1.
<COMM_CFGDEP>-DEPID = 1.
<COMM_CFGDEP>-STATNR = 1.
<COMM_CFGDEP>-ECMNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMM_CFGDEP-DEPNAME, sy-vline,
  WA_COMM_CFGDEP-DEPTYPE, sy-vline,
  WA_COMM_CFGDEP-NETID, sy-vline,
  WA_COMM_CFGDEP-STATUSID, sy-vline,
  WA_COMM_CFGDEP-PRIO, sy-vline,
  WA_COMM_CFGDEP-BLOBTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMM_CFGDEP 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_CFGDEP 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_CFGDEP INTO WA_COMM_CFGDEP.


*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_CFGDEP_STR, 
MANDT TYPE STRING,
KBID TYPE STRING,
DEPID TYPE STRING,
STATNR TYPE STRING,
ECMNR TYPE STRING,
DEPNAME TYPE STRING,
DEPTYPE TYPE STRING,
NETID TYPE STRING,
STATUSID TYPE STRING,
PRIO TYPE STRING,
BLOBTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMM_CFGDEP_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_CFGDEP_STR-MANDT sy-vline 
WA_COMM_CFGDEP_STR-KBID sy-vline 
WA_COMM_CFGDEP_STR-DEPID sy-vline 
WA_COMM_CFGDEP_STR-STATNR sy-vline 
WA_COMM_CFGDEP_STR-ECMNR sy-vline 
WA_COMM_CFGDEP_STR-DEPNAME sy-vline 
WA_COMM_CFGDEP_STR-DEPTYPE sy-vline 
WA_COMM_CFGDEP_STR-NETID sy-vline 
WA_COMM_CFGDEP_STR-STATUSID sy-vline 
WA_COMM_CFGDEP_STR-PRIO sy-vline 
WA_COMM_CFGDEP_STR-BLOBTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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