ABAP Select data from SAP table ITVCL_SUMMARY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ITVCL_SUMMARY 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_SUMMARY. 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_SUMMARY 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_SUMMARY TYPE STANDARD TABLE OF ITVCL_SUMMARY,
      WA_ITVCL_SUMMARY TYPE ITVCL_SUMMARY,
      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_SUMMARY> TYPE ITVCL_SUMMARY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITVCL_SUMMARY
*  INTO TABLE @DATA(IT_ITVCL_SUMMARY2).
*--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_SUMMARY INDEX 1 INTO DATA(WA_ITVCL_SUMMARY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITVCL_SUMMARY>-BUKRS = 1.
<ITVCL_SUMMARY>-BELNR = 1.
<ITVCL_SUMMARY>-GJAHR = 1.
<ITVCL_SUMMARY>-BUDAT = 1.
<ITVCL_SUMMARY>-BLDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITVCL_SUMMARY-BLART, sy-vline,
  WA_ITVCL_SUMMARY-XBLNR, sy-vline,
  WA_ITVCL_SUMMARY-REBZG, sy-vline,
  WA_ITVCL_SUMMARY-REBZJ, sy-vline,
  WA_ITVCL_SUMMARY-NUMMR, sy-vline,
  WA_ITVCL_SUMMARY-KOART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITVCL_SUMMARY 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_SUMMARY 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_SUMMARY INTO WA_ITVCL_SUMMARY.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ITVCL_SUMMARY-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITVCL_SUMMARY-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBZG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITVCL_SUMMARY-REBZG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITVCL_SUMMARY-REBZG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ITVCL_SUMMARY-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITVCL_SUMMARY-REBZJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NUMMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITVCL_SUMMARY-NUMMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITVCL_SUMMARY-NUMMR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWBAS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ITVCL_SUMMARY-HWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITVCL_SUMMARY-HWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ITVCL_SUMMARY-HWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITVCL_SUMMARY-HWSTE.
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_ITVCL_SUMMARY_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BLART TYPE STRING,
XBLNR TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
NUMMR TYPE STRING,
KOART TYPE STRING,
NAME1 TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
STRAS TYPE STRING,
STCEG TYPE STRING,
MWSKZ TYPE STRING,
KTOSL TYPE STRING,
HWBAS TYPE STRING,
HWSTE TYPE STRING,
PMETH TYPE STRING,
TRNTYP TYPE STRING,
STKZN TYPE STRING,
OP1_CM TYPE STRING,
CRE_MEMO TYPE STRING,
DBE_MEMO TYPE STRING,
CONTRACT TYPE STRING,
OPERATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITVCL_SUMMARY_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_SUMMARY_STR-BUKRS sy-vline 
WA_ITVCL_SUMMARY_STR-BELNR sy-vline 
WA_ITVCL_SUMMARY_STR-GJAHR sy-vline 
WA_ITVCL_SUMMARY_STR-BUDAT sy-vline 
WA_ITVCL_SUMMARY_STR-BLDAT sy-vline 
WA_ITVCL_SUMMARY_STR-BLART sy-vline 
WA_ITVCL_SUMMARY_STR-XBLNR sy-vline 
WA_ITVCL_SUMMARY_STR-REBZG sy-vline 
WA_ITVCL_SUMMARY_STR-REBZJ sy-vline 
WA_ITVCL_SUMMARY_STR-NUMMR sy-vline 
WA_ITVCL_SUMMARY_STR-KOART sy-vline 
WA_ITVCL_SUMMARY_STR-NAME1 sy-vline 
WA_ITVCL_SUMMARY_STR-ORT01 sy-vline 
WA_ITVCL_SUMMARY_STR-LAND1 sy-vline 
WA_ITVCL_SUMMARY_STR-STRAS sy-vline 
WA_ITVCL_SUMMARY_STR-STCEG sy-vline 
WA_ITVCL_SUMMARY_STR-MWSKZ sy-vline 
WA_ITVCL_SUMMARY_STR-KTOSL sy-vline 
WA_ITVCL_SUMMARY_STR-HWBAS sy-vline 
WA_ITVCL_SUMMARY_STR-HWSTE sy-vline 
WA_ITVCL_SUMMARY_STR-PMETH sy-vline 
WA_ITVCL_SUMMARY_STR-TRNTYP sy-vline 
WA_ITVCL_SUMMARY_STR-STKZN sy-vline 
WA_ITVCL_SUMMARY_STR-OP1_CM sy-vline 
WA_ITVCL_SUMMARY_STR-CRE_MEMO sy-vline 
WA_ITVCL_SUMMARY_STR-DBE_MEMO sy-vline 
WA_ITVCL_SUMMARY_STR-CONTRACT sy-vline 
WA_ITVCL_SUMMARY_STR-OPERATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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