ABAP Select data from SAP table WDR_TEST_CUST_EXT_NEW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WDR_TEST_CUST_EXT_NEW 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_TEST_CUST_EXT_NEW. 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_TEST_CUST_EXT_NEW 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_TEST_CUST_EXT_NEW TYPE STANDARD TABLE OF WDR_TEST_CUST_EXT_NEW,
      WA_WDR_TEST_CUST_EXT_NEW TYPE WDR_TEST_CUST_EXT_NEW,
      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_TEST_CUST_EXT_NEW> TYPE WDR_TEST_CUST_EXT_NEW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WDR_TEST_CUST_EXT_NEW
*  INTO TABLE @DATA(IT_WDR_TEST_CUST_EXT_NEW2).
*--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_TEST_CUST_EXT_NEW INDEX 1 INTO DATA(WA_WDR_TEST_CUST_EXT_NEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WDR_TEST_CUST_EXT_NEW>-MANDT = 1.
<WDR_TEST_CUST_EXT_NEW>-CARRID = 1.
<WDR_TEST_CUST_EXT_NEW>-CONNID = 1.
<WDR_TEST_CUST_EXT_NEW>-FLDATE = 1.
<WDR_TEST_CUST_EXT_NEW>-PRICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WDR_TEST_CUST_EXT_NEW-CURRENCY, sy-vline,
  WA_WDR_TEST_CUST_EXT_NEW-PLANETYPE, sy-vline,
  WA_WDR_TEST_CUST_EXT_NEW-SEATSMAX, sy-vline,
  WA_WDR_TEST_CUST_EXT_NEW-SEATSOCC, sy-vline,
  WA_WDR_TEST_CUST_EXT_NEW-PAYMENTSUM, sy-vline,
  WA_WDR_TEST_CUST_EXT_NEW-SEATSMAX_B, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WDR_TEST_CUST_EXT_NEW 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_TEST_CUST_EXT_NEW 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_TEST_CUST_EXT_NEW INTO WA_WDR_TEST_CUST_EXT_NEW.


*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_TEST_CUST_EXT_NEW_STR, 
MANDT TYPE STRING,
CARRID TYPE STRING,
CONNID TYPE STRING,
FLDATE TYPE STRING,
PRICE TYPE STRING,
CURRENCY TYPE STRING,
PLANETYPE TYPE STRING,
SEATSMAX TYPE STRING,
SEATSOCC TYPE STRING,
PAYMENTSUM TYPE STRING,
SEATSMAX_B TYPE STRING,
SEATSOCC_B TYPE STRING,
SEATSMAX_F TYPE STRING,
SEATSOCC_F TYPE STRING,
FIRST_NAME TYPE STRING,
LAST_NAME TYPE STRING,
IS_SINGLE TYPE STRING,
CITY TYPE STRING,
ZIP_CODE TYPE STRING,
START_MONTH TYPE STRING,
ADD_CONNID TYPE STRING,
CANCEL_MODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WDR_TEST_CUST_EXT_NEW_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_TEST_CUST_EXT_NEW_STR-MANDT sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-CARRID sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-CONNID sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-FLDATE sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-PRICE sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-CURRENCY sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-PLANETYPE sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-SEATSMAX sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-SEATSOCC sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-PAYMENTSUM sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-SEATSMAX_B sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-SEATSOCC_B sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-SEATSMAX_F sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-SEATSOCC_F sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-FIRST_NAME sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-LAST_NAME sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-IS_SINGLE sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-CITY sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-ZIP_CODE sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-START_MONTH sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-ADD_CONNID sy-vline 
WA_WDR_TEST_CUST_EXT_NEW_STR-CANCEL_MODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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