ABAP Select data from SAP table VBCORECDSVIEWS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VBCORECDSVIEWS
*  INTO TABLE @DATA(IT_VBCORECDSVIEWS2).
*--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_VBCORECDSVIEWS INDEX 1 INTO DATA(WA_VBCORECDSVIEWS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VBCORECDSVIEWS>-DDLSOURCENAME = 1.
<VBCORECDSVIEWS>-DDLSOURCENAMETEXT = 1.
<VBCORECDSVIEWS>-SQLVIEWNAME = 1.
<VBCORECDSVIEWS>-CDSNAME = 1.
<VBCORECDSVIEWS>-CDSVIEWTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VBCORECDSVIEWS-APPLICATIONCOMPONENT, sy-vline,
  WA_VBCORECDSVIEWS-APPLICATIONCOMPONENTNAME, sy-vline,
  WA_VBCORECDSVIEWS-CDSVIEWPACKAGE, sy-vline,
  WA_VBCORECDSVIEWS-CDSVIEWSOURCESYSTEM, sy-vline,
  WA_VBCORECDSVIEWS-CDSTYPE, sy-vline,
  WA_VBCORECDSVIEWS-CDSVIEWCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VBCORECDSVIEWS 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_VBCORECDSVIEWS 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_VBCORECDSVIEWS INTO WA_VBCORECDSVIEWS.


*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_VBCORECDSVIEWS_STR, 
DDLSOURCENAME TYPE STRING,
DDLSOURCENAMETEXT TYPE STRING,
SQLVIEWNAME TYPE STRING,
CDSNAME TYPE STRING,
CDSVIEWTYPE TYPE STRING,
APPLICATIONCOMPONENT TYPE STRING,
APPLICATIONCOMPONENTNAME TYPE STRING,
CDSVIEWPACKAGE TYPE STRING,
CDSVIEWSOURCESYSTEM TYPE STRING,
CDSTYPE TYPE STRING,
CDSVIEWCATEGORY TYPE STRING,
CDSRELEASESTATUS TYPE STRING,
DEPRECATEDSTATUS TYPE STRING,
CDSPRIVATE TYPE STRING,
CDSORIGINKEY TYPE STRING,
SUPPORTEDCAPABILITY TYPE STRING,
NUMBEROFCAPABILITIES TYPE STRING,
MODELINGPATTERN TYPE STRING,
SOURCETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VBCORECDSVIEWS_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_VBCORECDSVIEWS_STR-DDLSOURCENAME sy-vline 
WA_VBCORECDSVIEWS_STR-DDLSOURCENAMETEXT sy-vline 
WA_VBCORECDSVIEWS_STR-SQLVIEWNAME sy-vline 
WA_VBCORECDSVIEWS_STR-CDSNAME sy-vline 
WA_VBCORECDSVIEWS_STR-CDSVIEWTYPE sy-vline 
WA_VBCORECDSVIEWS_STR-APPLICATIONCOMPONENT sy-vline 
WA_VBCORECDSVIEWS_STR-APPLICATIONCOMPONENTNAME sy-vline 
WA_VBCORECDSVIEWS_STR-CDSVIEWPACKAGE sy-vline 
WA_VBCORECDSVIEWS_STR-CDSVIEWSOURCESYSTEM sy-vline 
WA_VBCORECDSVIEWS_STR-CDSTYPE sy-vline 
WA_VBCORECDSVIEWS_STR-CDSVIEWCATEGORY sy-vline 
WA_VBCORECDSVIEWS_STR-CDSRELEASESTATUS sy-vline 
WA_VBCORECDSVIEWS_STR-DEPRECATEDSTATUS sy-vline 
WA_VBCORECDSVIEWS_STR-CDSPRIVATE sy-vline 
WA_VBCORECDSVIEWS_STR-CDSORIGINKEY sy-vline 
WA_VBCORECDSVIEWS_STR-SUPPORTEDCAPABILITY sy-vline 
WA_VBCORECDSVIEWS_STR-NUMBEROFCAPABILITIES sy-vline 
WA_VBCORECDSVIEWS_STR-MODELINGPATTERN sy-vline 
WA_VBCORECDSVIEWS_STR-SOURCETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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