ABAP Select data from SAP table V_CGIEXREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_CGIEXREL
*  INTO TABLE @DATA(IT_V_CGIEXREL2).
*--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_V_CGIEXREL INDEX 1 INTO DATA(WA_V_CGIEXREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_CGIEXREL>-MANDT = 1.
<V_CGIEXREL>-PROFIL_ID = 1.
<V_CGIEXREL>-EX_OBJ_OTYPE = 1.
<V_CGIEXREL>-OTYPE = 1.
<V_CGIEXREL>-APPLOBJ_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_CGIEXREL-ROLE, sy-vline,
  WA_V_CGIEXREL-DIRECT1, sy-vline,
  WA_V_CGIEXREL-DIRECT1FOLDER, sy-vline,
  WA_V_CGIEXREL-DIRECT1UNFOLD, sy-vline,
  WA_V_CGIEXREL-DIRECT1HIDE, sy-vline,
  WA_V_CGIEXREL-DIRECT2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_CGIEXREL 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_V_CGIEXREL 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_V_CGIEXREL INTO WA_V_CGIEXREL.


*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_V_CGIEXREL_STR, 
MANDT TYPE STRING,
PROFIL_ID TYPE STRING,
EX_OBJ_OTYPE TYPE STRING,
OTYPE TYPE STRING,
APPLOBJ_TYPE TYPE STRING,
ROLE TYPE STRING,
DIRECT1 TYPE STRING,
DIRECT1FOLDER TYPE STRING,
DIRECT1UNFOLD TYPE STRING,
DIRECT1HIDE TYPE STRING,
DIRECT2 TYPE STRING,
DIRECT2FOLDER TYPE STRING,
DIRECT2UNFOLD TYPE STRING,
DIRECT2HIDE TYPE STRING,
PROFIL_NAME TYPE STRING,
IPPE_300_FLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_CGIEXREL_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_V_CGIEXREL_STR-MANDT sy-vline 
WA_V_CGIEXREL_STR-PROFIL_ID sy-vline 
WA_V_CGIEXREL_STR-EX_OBJ_OTYPE sy-vline 
WA_V_CGIEXREL_STR-OTYPE sy-vline 
WA_V_CGIEXREL_STR-APPLOBJ_TYPE sy-vline 
WA_V_CGIEXREL_STR-ROLE sy-vline 
WA_V_CGIEXREL_STR-DIRECT1 sy-vline 
WA_V_CGIEXREL_STR-DIRECT1FOLDER sy-vline 
WA_V_CGIEXREL_STR-DIRECT1UNFOLD sy-vline 
WA_V_CGIEXREL_STR-DIRECT1HIDE sy-vline 
WA_V_CGIEXREL_STR-DIRECT2 sy-vline 
WA_V_CGIEXREL_STR-DIRECT2FOLDER sy-vline 
WA_V_CGIEXREL_STR-DIRECT2UNFOLD sy-vline 
WA_V_CGIEXREL_STR-DIRECT2HIDE sy-vline 
WA_V_CGIEXREL_STR-PROFIL_NAME sy-vline 
WA_V_CGIEXREL_STR-IPPE_300_FLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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