ABAP Select data from SAP table ITVCL_OPERATION3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ITVCL_OPERATION3 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 ITVCL_OPERATION3. 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 ITVCL_OPERATION3 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_ITVCL_OPERATION3 TYPE STANDARD TABLE OF ITVCL_OPERATION3,
      WA_ITVCL_OPERATION3 TYPE ITVCL_OPERATION3,
      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: <ITVCL_OPERATION3> TYPE ITVCL_OPERATION3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ITVCL_OPERATION3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ITVCL_OPERATION3
  INTO TABLE IT_ITVCL_OPERATION3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITVCL_OPERATION3
*  INTO TABLE @DATA(IT_ITVCL_OPERATION32).
*--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_ITVCL_OPERATION3 INDEX 1 INTO DATA(WA_ITVCL_OPERATION32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ITVCL_OPERATION3 ASSIGNING <ITVCL_OPERATION3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITVCL_OPERATION3>-RTYPE = 1.
<ITVCL_OPERATION3>-NAME1 = 1.
<ITVCL_OPERATION3>-NAME2 = 1.
<ITVCL_OPERATION3>-DTOFB = 1.
<ITVCL_OPERATION3>-MUNIF = 1.

ENDLOOP.

LOOP AT IT_ITVCL_OPERATION3 INTO WA_ITVCL_OPERATION3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITVCL_OPERATION3-PROVINC, sy-vline,
  WA_ITVCL_OPERATION3-FCNTRY, sy-vline,
  WA_ITVCL_OPERATION3-CNAME, sy-vline,
  WA_ITVCL_OPERATION3-CADDR, sy-vline,
  WA_ITVCL_OPERATION3-CLAND1, sy-vline,
  WA_ITVCL_OPERATION3-CADDR2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITVCL_OPERATION3 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_ITVCL_OPERATION3 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_ITVCL_OPERATION3 INTO WA_ITVCL_OPERATION3.


*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_ITVCL_OPERATION3_STR, 
RTYPE TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
DTOFB TYPE STRING,
MUNIF TYPE STRING,
PROVINC TYPE STRING,
FCNTRY TYPE STRING,
CNAME TYPE STRING,
CADDR TYPE STRING,
CLAND1 TYPE STRING,
CADDR2 TYPE STRING,
BUDAT TYPE STRING,
BELNR TYPE STRING,
PMETH TYPE STRING,
HWBAS TYPE STRING,
HWSTE TYPE STRING,
OPTYPE TYPE STRING,
FILLER TYPE STRING,
CONCHAR TYPE STRING,
CRLF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITVCL_OPERATION3_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_ITVCL_OPERATION3_STR-RTYPE sy-vline 
WA_ITVCL_OPERATION3_STR-NAME1 sy-vline 
WA_ITVCL_OPERATION3_STR-NAME2 sy-vline 
WA_ITVCL_OPERATION3_STR-DTOFB sy-vline 
WA_ITVCL_OPERATION3_STR-MUNIF sy-vline 
WA_ITVCL_OPERATION3_STR-PROVINC sy-vline 
WA_ITVCL_OPERATION3_STR-FCNTRY sy-vline 
WA_ITVCL_OPERATION3_STR-CNAME sy-vline 
WA_ITVCL_OPERATION3_STR-CADDR sy-vline 
WA_ITVCL_OPERATION3_STR-CLAND1 sy-vline 
WA_ITVCL_OPERATION3_STR-CADDR2 sy-vline 
WA_ITVCL_OPERATION3_STR-BUDAT sy-vline 
WA_ITVCL_OPERATION3_STR-BELNR sy-vline 
WA_ITVCL_OPERATION3_STR-PMETH sy-vline 
WA_ITVCL_OPERATION3_STR-HWBAS sy-vline 
WA_ITVCL_OPERATION3_STR-HWSTE sy-vline 
WA_ITVCL_OPERATION3_STR-OPTYPE sy-vline 
WA_ITVCL_OPERATION3_STR-FILLER sy-vline 
WA_ITVCL_OPERATION3_STR-CONCHAR sy-vline 
WA_ITVCL_OPERATION3_STR-CRLF sy-vline      INTO ld_text SEPARATED BY SPACE.

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