ABAP Select data from SAP table /UI2/V_CDM_CONV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /UI2/V_CDM_CONV 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 /UI2/V_CDM_CONV. 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 /UI2/V_CDM_CONV 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_/UI2/V_CDM_CONV TYPE STANDARD TABLE OF /UI2/V_CDM_CONV,
      WA_/UI2/V_CDM_CONV TYPE /UI2/V_CDM_CONV,
      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: </UI2/V_CDM_CONV> TYPE /UI2/V_CDM_CONV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/UI2/V_CDM_CONV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /UI2/V_CDM_CONV
  INTO TABLE IT_/UI2/V_CDM_CONV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /UI2/V_CDM_CONV
*  INTO TABLE @DATA(IT_/UI2/V_CDM_CONV2).
*--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_/UI2/V_CDM_CONV INDEX 1 INTO DATA(WA_/UI2/V_CDM_CONV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/UI2/V_CDM_CONV ASSIGNING </UI2/V_CDM_CONV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</UI2/V_CDM_CONV>-ID = 1.
</UI2/V_CDM_CONV>-NAMESPACE = 1.
</UI2/V_CDM_CONV>-NAME = 1.
</UI2/V_CDM_CONV>-TYPE = 1.
</UI2/V_CDM_CONV>-LAYER_TYPE = 1.

ENDLOOP.

LOOP AT IT_/UI2/V_CDM_CONV INTO WA_/UI2/V_CDM_CONV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/UI2/V_CDM_CONV-AGGREGATION_MODE, sy-vline,
  WA_/UI2/V_CDM_CONV-APP_DESCR_ID, sy-vline,
  WA_/UI2/V_CDM_CONV-CHANGE_ID, sy-vline,
  WA_/UI2/V_CDM_CONV-DEVCLASS_TARGET, sy-vline,
  WA_/UI2/V_CDM_CONV-UPDATED_CONVERT, sy-vline,
  WA_/UI2/V_CDM_CONV-TRKORR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/UI2/V_CDM_CONV 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_/UI2/V_CDM_CONV 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_/UI2/V_CDM_CONV INTO WA_/UI2/V_CDM_CONV.


*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_/UI2/V_CDM_CONV_STR, 
ID TYPE STRING,
NAMESPACE TYPE STRING,
NAME TYPE STRING,
TYPE TYPE STRING,
LAYER_TYPE TYPE STRING,
AGGREGATION_MODE TYPE STRING,
APP_DESCR_ID TYPE STRING,
CHANGE_ID TYPE STRING,
DEVCLASS_TARGET TYPE STRING,
UPDATED_CONVERT TYPE STRING,
TRKORR TYPE STRING,
SO_OBJECT TYPE STRING,
SO_ACTION TYPE STRING,
LOG_JSON TYPE STRING,
DEVICE_DESKTOP TYPE STRING,
DEVICE_TABLET TYPE STRING,
DEVICE_PHONE TYPE STRING,
DESCR_TITLE TYPE STRING,
DESCR_SUBTITLE TYPE STRING,
DESCR_INFO TYPE STRING,
DESCR_KEYWORDS TYPE STRING,
MAPPING_SIGNATURE TYPE STRING,
APP_TYPE TYPE STRING,
TILE_ID TYPE STRING,
TM_ID TYPE STRING,
TILE_REF_ID TYPE STRING,
TM_REF_ID TYPE STRING,
DEVCLASS_ORG TYPE STRING,
CATALOG_ID TYPE STRING,
TILE_REF_CATALOG TYPE STRING,
TM_REF_CATALOG TYPE STRING,
ICON_URL TYPE STRING,
TILE_PARAMETERS TYPE STRING,
UPDATED_CONVORG TYPE STRING,
RUN_GUID TYPE STRING,
CONVERTED_AT TYPE STRING,
CONVERTED_BY TYPE STRING,
APP_TYPE_INFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/UI2/V_CDM_CONV_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_/UI2/V_CDM_CONV_STR-ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-NAMESPACE sy-vline 
WA_/UI2/V_CDM_CONV_STR-NAME sy-vline 
WA_/UI2/V_CDM_CONV_STR-TYPE sy-vline 
WA_/UI2/V_CDM_CONV_STR-LAYER_TYPE sy-vline 
WA_/UI2/V_CDM_CONV_STR-AGGREGATION_MODE sy-vline 
WA_/UI2/V_CDM_CONV_STR-APP_DESCR_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-CHANGE_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-DEVCLASS_TARGET sy-vline 
WA_/UI2/V_CDM_CONV_STR-UPDATED_CONVERT sy-vline 
WA_/UI2/V_CDM_CONV_STR-TRKORR sy-vline 
WA_/UI2/V_CDM_CONV_STR-SO_OBJECT sy-vline 
WA_/UI2/V_CDM_CONV_STR-SO_ACTION sy-vline 
WA_/UI2/V_CDM_CONV_STR-LOG_JSON sy-vline 
WA_/UI2/V_CDM_CONV_STR-DEVICE_DESKTOP sy-vline 
WA_/UI2/V_CDM_CONV_STR-DEVICE_TABLET sy-vline 
WA_/UI2/V_CDM_CONV_STR-DEVICE_PHONE sy-vline 
WA_/UI2/V_CDM_CONV_STR-DESCR_TITLE sy-vline 
WA_/UI2/V_CDM_CONV_STR-DESCR_SUBTITLE sy-vline 
WA_/UI2/V_CDM_CONV_STR-DESCR_INFO sy-vline 
WA_/UI2/V_CDM_CONV_STR-DESCR_KEYWORDS sy-vline 
WA_/UI2/V_CDM_CONV_STR-MAPPING_SIGNATURE sy-vline 
WA_/UI2/V_CDM_CONV_STR-APP_TYPE sy-vline 
WA_/UI2/V_CDM_CONV_STR-TILE_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-TM_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-TILE_REF_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-TM_REF_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-DEVCLASS_ORG sy-vline 
WA_/UI2/V_CDM_CONV_STR-CATALOG_ID sy-vline 
WA_/UI2/V_CDM_CONV_STR-TILE_REF_CATALOG sy-vline 
WA_/UI2/V_CDM_CONV_STR-TM_REF_CATALOG sy-vline 
WA_/UI2/V_CDM_CONV_STR-ICON_URL sy-vline 
WA_/UI2/V_CDM_CONV_STR-TILE_PARAMETERS sy-vline 
WA_/UI2/V_CDM_CONV_STR-UPDATED_CONVORG sy-vline 
WA_/UI2/V_CDM_CONV_STR-RUN_GUID sy-vline 
WA_/UI2/V_CDM_CONV_STR-CONVERTED_AT sy-vline 
WA_/UI2/V_CDM_CONV_STR-CONVERTED_BY sy-vline 
WA_/UI2/V_CDM_CONV_STR-APP_TYPE_INFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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