ABAP Select data from SAP table CNVC_SCNG_OBJL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVC_SCNG_OBJL
*  INTO TABLE @DATA(IT_CNVC_SCNG_OBJL2).
*--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_CNVC_SCNG_OBJL INDEX 1 INTO DATA(WA_CNVC_SCNG_OBJL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVC_SCNG_OBJL>-MANDT = 1.
<CNVC_SCNG_OBJL>-RUNID = 1.
<CNVC_SCNG_OBJL>-OBJTYP = 1.
<CNVC_SCNG_OBJL>-OBJNAM = 1.
<CNVC_SCNG_OBJL>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVC_SCNG_OBJL-STATUS, sy-vline,
  WA_CNVC_SCNG_OBJL-HAVE_OBJM, sy-vline,
  WA_CNVC_SCNG_OBJL-DATUM, sy-vline,
  WA_CNVC_SCNG_OBJL-UZEIT, sy-vline,
  WA_CNVC_SCNG_OBJL-X_COMMON, sy-vline,
  WA_CNVC_SCNG_OBJL-X_DELTA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVC_SCNG_OBJL 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_CNVC_SCNG_OBJL 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_CNVC_SCNG_OBJL INTO WA_CNVC_SCNG_OBJL.


*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_CNVC_SCNG_OBJL_STR, 
MANDT TYPE STRING,
RUNID TYPE STRING,
OBJTYP TYPE STRING,
OBJNAM TYPE STRING,
OBJID TYPE STRING,
STATUS TYPE STRING,
HAVE_OBJM TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
X_COMMON TYPE STRING,
X_DELTA TYPE STRING,
X_UNIQUE TYPE STRING,
COUNT_VERSIONS TYPE STRING,
VERSION01 TYPE STRING,
VERSION02 TYPE STRING,
VERSION03 TYPE STRING,
VERSION04 TYPE STRING,
VERSION05 TYPE STRING,
VERSION06 TYPE STRING,
VERSION07 TYPE STRING,
VERSION08 TYPE STRING,
VERSION09 TYPE STRING,
VERSION10 TYPE STRING,
VERSION11 TYPE STRING,
VERSION12 TYPE STRING,
VERSION13 TYPE STRING,
VERSION14 TYPE STRING,
VERSION15 TYPE STRING,
VERSION16 TYPE STRING,
VERSION17 TYPE STRING,
VERSION18 TYPE STRING,
VERSION19 TYPE STRING,
VERSION20 TYPE STRING,
VERSION21 TYPE STRING,
VERSION22 TYPE STRING,
VERSION23 TYPE STRING,
VERSION24 TYPE STRING,
VERSION25 TYPE STRING,
VERSION26 TYPE STRING,
VERSION27 TYPE STRING,
VERSION28 TYPE STRING,
VERSION29 TYPE STRING,
VERSION30 TYPE STRING,
VERSION31 TYPE STRING,
VERSION32 TYPE STRING,
TRKORR01 TYPE STRING,
TRKORR02 TYPE STRING,
TRKORR03 TYPE STRING,
TRKORR04 TYPE STRING,
TRKORR05 TYPE STRING,
TRKORR06 TYPE STRING,
TRKORR07 TYPE STRING,
TRKORR08 TYPE STRING,
TRKORR09 TYPE STRING,
TRKORR10 TYPE STRING,
TRKORR11 TYPE STRING,
TRKORR12 TYPE STRING,
TRKORR13 TYPE STRING,
TRKORR14 TYPE STRING,
TRKORR15 TYPE STRING,
TRKORR16 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVC_SCNG_OBJL_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_CNVC_SCNG_OBJL_STR-MANDT sy-vline 
WA_CNVC_SCNG_OBJL_STR-RUNID sy-vline 
WA_CNVC_SCNG_OBJL_STR-OBJTYP sy-vline 
WA_CNVC_SCNG_OBJL_STR-OBJNAM sy-vline 
WA_CNVC_SCNG_OBJL_STR-OBJID sy-vline 
WA_CNVC_SCNG_OBJL_STR-STATUS sy-vline 
WA_CNVC_SCNG_OBJL_STR-HAVE_OBJM sy-vline 
WA_CNVC_SCNG_OBJL_STR-DATUM sy-vline 
WA_CNVC_SCNG_OBJL_STR-UZEIT sy-vline 
WA_CNVC_SCNG_OBJL_STR-X_COMMON sy-vline 
WA_CNVC_SCNG_OBJL_STR-X_DELTA sy-vline 
WA_CNVC_SCNG_OBJL_STR-X_UNIQUE sy-vline 
WA_CNVC_SCNG_OBJL_STR-COUNT_VERSIONS sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION01 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION02 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION03 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION04 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION05 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION06 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION07 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION08 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION09 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION10 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION11 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION12 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION13 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION14 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION15 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION16 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION17 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION18 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION19 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION20 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION21 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION22 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION23 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION24 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION25 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION26 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION27 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION28 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION29 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION30 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION31 sy-vline 
WA_CNVC_SCNG_OBJL_STR-VERSION32 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR01 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR02 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR03 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR04 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR05 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR06 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR07 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR08 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR09 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR10 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR11 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR12 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR13 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR14 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR15 sy-vline 
WA_CNVC_SCNG_OBJL_STR-TRKORR16 sy-vline      INTO ld_text SEPARATED BY SPACE.

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