ABAP Select data from SAP table CDESK_CALLBACK_ALL_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDESK_CALLBACK_ALL_DATA
*  INTO TABLE @DATA(IT_CDESK_CALLBACK_ALL_DATA2).
*--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_CDESK_CALLBACK_ALL_DATA INDEX 1 INTO DATA(WA_CDESK_CALLBACK_ALL_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDESK_CALLBACK_ALL_DATA>-INDEX = 1.
<CDESK_CALLBACK_ALL_DATA>-HOWTOGET = 1.
<CDESK_CALLBACK_ALL_DATA>-ATTNAME = 1.
<CDESK_CALLBACK_ALL_DATA>-ATTVALUE = 1.
<CDESK_CALLBACK_ALL_DATA>-INDEXADV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDESK_CALLBACK_ALL_DATA-HOWTOGETADV, sy-vline,
  WA_CDESK_CALLBACK_ALL_DATA-ATTNAMEADV, sy-vline,
  WA_CDESK_CALLBACK_ALL_DATA-ATTVALUEADV, sy-vline,
  WA_CDESK_CALLBACK_ALL_DATA-DOKAR, sy-vline,
  WA_CDESK_CALLBACK_ALL_DATA-SAPATTRIBUTCLASS, sy-vline,
  WA_CDESK_CALLBACK_ALL_DATA-SAPATTRIBUTNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDESK_CALLBACK_ALL_DATA 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_CDESK_CALLBACK_ALL_DATA 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_CDESK_CALLBACK_ALL_DATA INTO WA_CDESK_CALLBACK_ALL_DATA.


*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_CDESK_CALLBACK_ALL_DATA_STR, 
INDEX TYPE STRING,
HOWTOGET TYPE STRING,
ATTNAME TYPE STRING,
ATTVALUE TYPE STRING,
INDEXADV TYPE STRING,
HOWTOGETADV TYPE STRING,
ATTNAMEADV TYPE STRING,
ATTVALUEADV TYPE STRING,
DOKAR TYPE STRING,
SAPATTRIBUTCLASS TYPE STRING,
SAPATTRIBUTNAME TYPE STRING,
LINENR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDESK_CALLBACK_ALL_DATA_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_CDESK_CALLBACK_ALL_DATA_STR-INDEX sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-HOWTOGET sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-ATTNAME sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-ATTVALUE sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-INDEXADV sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-HOWTOGETADV sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-ATTNAMEADV sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-ATTVALUEADV sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-DOKAR sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-SAPATTRIBUTCLASS sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-SAPATTRIBUTNAME sy-vline 
WA_CDESK_CALLBACK_ALL_DATA_STR-LINENR sy-vline      INTO ld_text SEPARATED BY SPACE.

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