ABAP Select data from SAP table WSSD_CUST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSSD_CUST
*  INTO TABLE @DATA(IT_WSSD_CUST2).
*--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_WSSD_CUST INDEX 1 INTO DATA(WA_WSSD_CUST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSSD_CUST>-CUSTOMER = 1.
<WSSD_CUST>-CUST_TYPE = 1.
<WSSD_CUST>-NAME = 1.
<WSSD_CUST>-NAME_2 = 1.
<WSSD_CUST>-NAME_3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSSD_CUST-NAME_4, sy-vline,
  WA_WSSD_CUST-TITLE_P, sy-vline,
  WA_WSSD_CUST-FIRSTNAME, sy-vline,
  WA_WSSD_CUST-LASTNAME, sy-vline,
  WA_WSSD_CUST-MIDDLENAME, sy-vline,
  WA_WSSD_CUST-SECONDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSSD_CUST 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_WSSD_CUST 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_WSSD_CUST INTO WA_WSSD_CUST.


*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.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WSSD_CUST-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSSD_CUST-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field DATE_BIRTH
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_WSSD_CUST-DATE_BIRTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSSD_CUST-DATE_BIRTH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field E_MAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_WSSD_CUST-E_MAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSSD_CUST-E_MAIL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU_P
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_WSSD_CUST-LANGU_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSSD_CUST-LANGU_P.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRESS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WSSD_CUST-ADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSSD_CUST-ADDRESS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WSSD_CUST_STR, 
CUSTOMER TYPE STRING,
CUST_TYPE TYPE STRING,
NAME TYPE STRING,
NAME_2 TYPE STRING,
NAME_3 TYPE STRING,
NAME_4 TYPE STRING,
TITLE_P TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
MIDDLENAME TYPE STRING,
SECONDNAME TYPE STRING,
DATE_BIRTH TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
POSTL_COD1 TYPE STRING,
POSTL_COD2 TYPE STRING,
PO_BOX TYPE STRING,
PO_BOX_CIT TYPE STRING,
STREET TYPE STRING,
HOUSE_NO TYPE STRING,
BUILDING TYPE STRING,
FLOOR TYPE STRING,
ROOM_NO TYPE STRING,
COUNTRY TYPE STRING,
COUNTRYISO TYPE STRING,
REGION TYPE STRING,
TEL1_NUMBR TYPE STRING,
TEL1_EXT TYPE STRING,
FAX_NUMBER TYPE STRING,
FAX_EXTENS TYPE STRING,
E_MAIL TYPE STRING,
LANGU_P TYPE STRING,
LANGUP_ISO TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
TITLE_KEY TYPE STRING,
ONLY_CHANGE_COMADDRESS TYPE STRING,
ACC_1_TIME TYPE STRING,
ADDRESS TYPE STRING,
CONSUMER_DEAR6 TYPE STRING,
CUSTOMER_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSSD_CUST_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_WSSD_CUST_STR-CUSTOMER sy-vline 
WA_WSSD_CUST_STR-CUST_TYPE sy-vline 
WA_WSSD_CUST_STR-NAME sy-vline 
WA_WSSD_CUST_STR-NAME_2 sy-vline 
WA_WSSD_CUST_STR-NAME_3 sy-vline 
WA_WSSD_CUST_STR-NAME_4 sy-vline 
WA_WSSD_CUST_STR-TITLE_P sy-vline 
WA_WSSD_CUST_STR-FIRSTNAME sy-vline 
WA_WSSD_CUST_STR-LASTNAME sy-vline 
WA_WSSD_CUST_STR-MIDDLENAME sy-vline 
WA_WSSD_CUST_STR-SECONDNAME sy-vline 
WA_WSSD_CUST_STR-DATE_BIRTH sy-vline 
WA_WSSD_CUST_STR-CITY sy-vline 
WA_WSSD_CUST_STR-DISTRICT sy-vline 
WA_WSSD_CUST_STR-POSTL_COD1 sy-vline 
WA_WSSD_CUST_STR-POSTL_COD2 sy-vline 
WA_WSSD_CUST_STR-PO_BOX sy-vline 
WA_WSSD_CUST_STR-PO_BOX_CIT sy-vline 
WA_WSSD_CUST_STR-STREET sy-vline 
WA_WSSD_CUST_STR-HOUSE_NO sy-vline 
WA_WSSD_CUST_STR-BUILDING sy-vline 
WA_WSSD_CUST_STR-FLOOR sy-vline 
WA_WSSD_CUST_STR-ROOM_NO sy-vline 
WA_WSSD_CUST_STR-COUNTRY sy-vline 
WA_WSSD_CUST_STR-COUNTRYISO sy-vline 
WA_WSSD_CUST_STR-REGION sy-vline 
WA_WSSD_CUST_STR-TEL1_NUMBR sy-vline 
WA_WSSD_CUST_STR-TEL1_EXT sy-vline 
WA_WSSD_CUST_STR-FAX_NUMBER sy-vline 
WA_WSSD_CUST_STR-FAX_EXTENS sy-vline 
WA_WSSD_CUST_STR-E_MAIL sy-vline 
WA_WSSD_CUST_STR-LANGU_P sy-vline 
WA_WSSD_CUST_STR-LANGUP_ISO sy-vline 
WA_WSSD_CUST_STR-CURRENCY sy-vline 
WA_WSSD_CUST_STR-CURRENCY_ISO sy-vline 
WA_WSSD_CUST_STR-TITLE_KEY sy-vline 
WA_WSSD_CUST_STR-ONLY_CHANGE_COMADDRESS sy-vline 
WA_WSSD_CUST_STR-ACC_1_TIME sy-vline 
WA_WSSD_CUST_STR-ADDRESS sy-vline 
WA_WSSD_CUST_STR-CONSUMER_DEAR6 sy-vline 
WA_WSSD_CUST_STR-CUSTOMER_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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