ABAP Select data from SAP table WDR_UIEL_ADAPTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WDR_UIEL_ADAPTER
*  INTO TABLE @DATA(IT_WDR_UIEL_ADAPTER2).
*--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_WDR_UIEL_ADAPTER INDEX 1 INTO DATA(WA_WDR_UIEL_ADAPTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WDR_UIEL_ADAPTER>-LIBRARY_NAME = 1.
<WDR_UIEL_ADAPTER>-ADAPTER_NAME = 1.
<WDR_UIEL_ADAPTER>-TYPE_ID = 1.
<WDR_UIEL_ADAPTER>-EXT_ADAPTER_LIB = 1.
<WDR_UIEL_ADAPTER>-EXT_ADAPTER_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WDR_UIEL_ADAPTER-UR_INTERFACE, sy-vline,
  WA_WDR_UIEL_ADAPTER-IS_ABSTRACT, sy-vline,
  WA_WDR_UIEL_ADAPTER-DEFINITION_NAME, sy-vline,
  WA_WDR_UIEL_ADAPTER-CUSTOM_RENDERER, sy-vline,
  WA_WDR_UIEL_ADAPTER-CUSTOM_METHOD, sy-vline,
  WA_WDR_UIEL_ADAPTER-IS_PRIVATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WDR_UIEL_ADAPTER 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_WDR_UIEL_ADAPTER 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_WDR_UIEL_ADAPTER INTO WA_WDR_UIEL_ADAPTER.


*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_WDR_UIEL_ADAPTER_STR, 
LIBRARY_NAME TYPE STRING,
ADAPTER_NAME TYPE STRING,
TYPE_ID TYPE STRING,
EXT_ADAPTER_LIB TYPE STRING,
EXT_ADAPTER_NAME TYPE STRING,
UR_INTERFACE TYPE STRING,
IS_ABSTRACT TYPE STRING,
DEFINITION_NAME TYPE STRING,
CUSTOM_RENDERER TYPE STRING,
CUSTOM_METHOD TYPE STRING,
IS_PRIVATE TYPE STRING,
ALLOW_DELTA_SYNC TYPE STRING,
HAS_FINALIZE_UCA TYPE STRING,
HAS_POSTREND_UCA TYPE STRING,
ID_GEN_ENTITY TYPE STRING,
LABEL_SUPPORT TYPE STRING,
IS_MAIN_ADAPTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WDR_UIEL_ADAPTER_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_WDR_UIEL_ADAPTER_STR-LIBRARY_NAME sy-vline 
WA_WDR_UIEL_ADAPTER_STR-ADAPTER_NAME sy-vline 
WA_WDR_UIEL_ADAPTER_STR-TYPE_ID sy-vline 
WA_WDR_UIEL_ADAPTER_STR-EXT_ADAPTER_LIB sy-vline 
WA_WDR_UIEL_ADAPTER_STR-EXT_ADAPTER_NAME sy-vline 
WA_WDR_UIEL_ADAPTER_STR-UR_INTERFACE sy-vline 
WA_WDR_UIEL_ADAPTER_STR-IS_ABSTRACT sy-vline 
WA_WDR_UIEL_ADAPTER_STR-DEFINITION_NAME sy-vline 
WA_WDR_UIEL_ADAPTER_STR-CUSTOM_RENDERER sy-vline 
WA_WDR_UIEL_ADAPTER_STR-CUSTOM_METHOD sy-vline 
WA_WDR_UIEL_ADAPTER_STR-IS_PRIVATE sy-vline 
WA_WDR_UIEL_ADAPTER_STR-ALLOW_DELTA_SYNC sy-vline 
WA_WDR_UIEL_ADAPTER_STR-HAS_FINALIZE_UCA sy-vline 
WA_WDR_UIEL_ADAPTER_STR-HAS_POSTREND_UCA sy-vline 
WA_WDR_UIEL_ADAPTER_STR-ID_GEN_ENTITY sy-vline 
WA_WDR_UIEL_ADAPTER_STR-LABEL_SUPPORT sy-vline 
WA_WDR_UIEL_ADAPTER_STR-IS_MAIN_ADAPTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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