ABAP Select data from SAP table ICFATTRIB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICFATTRIB
*  INTO TABLE @DATA(IT_ICFATTRIB2).
*--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_ICFATTRIB INDEX 1 INTO DATA(WA_ICFATTRIB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICFATTRIB>-CLIENT = 1.
<ICFATTRIB>-USERNAME = 1.
<ICFATTRIB>-CIPADDR = 1.
<ICFATTRIB>-ATTRIBUTE = 1.
<ICFATTRIB>-SERVER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICFATTRIB-URL, sy-vline,
  WA_ICFATTRIB-CUSERNAME, sy-vline,
  WA_ICFATTRIB-CHOST, sy-vline,
  WA_ICFATTRIB-CDATE, sy-vline,
  WA_ICFATTRIB-CTIME, sy-vline,
  WA_ICFATTRIB-TIMEOUT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICFATTRIB 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_ICFATTRIB 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_ICFATTRIB INTO WA_ICFATTRIB.


*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 IPADD, internal->external for field CIPV6ADDR
CALL FUNCTION 'CONVERSION_EXIT_IPADD_OUTPUT'
  EXPORTING
    input =                      WA_ICFATTRIB-CIPV6ADDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICFATTRIB-CIPV6ADDR.
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_ICFATTRIB_STR, 
CLIENT TYPE STRING,
USERNAME TYPE STRING,
CIPADDR TYPE STRING,
ATTRIBUTE TYPE STRING,
SERVER TYPE STRING,
URL TYPE STRING,
CUSERNAME TYPE STRING,
CHOST TYPE STRING,
CDATE TYPE STRING,
CTIME TYPE STRING,
TIMEOUT TYPE STRING,
DEBUGID TYPE STRING,
SYSTDEBUG TYPE STRING,
LIFE_DAY TYPE STRING,
LIFE_TIME TYPE STRING,
ATRAVAR TYPE STRING,
ATRAMESS TYPE STRING,
ATRAUSER TYPE STRING,
RECATTRIB TYPE STRING,
CALL_URL TYPE STRING,
ATRA_SINGLEREC TYPE STRING,
CIPV6ADDR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICFATTRIB_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_ICFATTRIB_STR-CLIENT sy-vline 
WA_ICFATTRIB_STR-USERNAME sy-vline 
WA_ICFATTRIB_STR-CIPADDR sy-vline 
WA_ICFATTRIB_STR-ATTRIBUTE sy-vline 
WA_ICFATTRIB_STR-SERVER sy-vline 
WA_ICFATTRIB_STR-URL sy-vline 
WA_ICFATTRIB_STR-CUSERNAME sy-vline 
WA_ICFATTRIB_STR-CHOST sy-vline 
WA_ICFATTRIB_STR-CDATE sy-vline 
WA_ICFATTRIB_STR-CTIME sy-vline 
WA_ICFATTRIB_STR-TIMEOUT sy-vline 
WA_ICFATTRIB_STR-DEBUGID sy-vline 
WA_ICFATTRIB_STR-SYSTDEBUG sy-vline 
WA_ICFATTRIB_STR-LIFE_DAY sy-vline 
WA_ICFATTRIB_STR-LIFE_TIME sy-vline 
WA_ICFATTRIB_STR-ATRAVAR sy-vline 
WA_ICFATTRIB_STR-ATRAMESS sy-vline 
WA_ICFATTRIB_STR-ATRAUSER sy-vline 
WA_ICFATTRIB_STR-RECATTRIB sy-vline 
WA_ICFATTRIB_STR-CALL_URL sy-vline 
WA_ICFATTRIB_STR-ATRA_SINGLEREC sy-vline 
WA_ICFATTRIB_STR-CIPV6ADDR sy-vline      INTO ld_text SEPARATED BY SPACE.

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