ABAP Select data from SAP table WIC_CUSTOMER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WIC_CUSTOMER
*  INTO TABLE @DATA(IT_WIC_CUSTOMER2).
*--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_WIC_CUSTOMER INDEX 1 INTO DATA(WA_WIC_CUSTOMER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WIC_CUSTOMER>-TITLE_P = 1.
<WIC_CUSTOMER>-FIRSTNAME = 1.
<WIC_CUSTOMER>-LASTNAME = 1.
<WIC_CUSTOMER>-MIDDLENAME = 1.
<WIC_CUSTOMER>-SECONDNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WIC_CUSTOMER-DATE_BIRTH, sy-vline,
  WA_WIC_CUSTOMER-CITY, sy-vline,
  WA_WIC_CUSTOMER-DISTRICT, sy-vline,
  WA_WIC_CUSTOMER-POSTL_COD1, sy-vline,
  WA_WIC_CUSTOMER-POSTL_COD2, sy-vline,
  WA_WIC_CUSTOMER-PO_BOX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WIC_CUSTOMER 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_WIC_CUSTOMER 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_WIC_CUSTOMER INTO WA_WIC_CUSTOMER.


*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 PDATE, internal->external for field DATE_BIRTH
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_WIC_CUSTOMER-DATE_BIRTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WIC_CUSTOMER-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_WIC_CUSTOMER-E_MAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WIC_CUSTOMER-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_WIC_CUSTOMER-LANGU_P
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WIC_CUSTOMER-LANGU_P.
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_WIC_CUSTOMER_STR, 
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,
NO_NAME TYPE STRING,
NO_VALID_D TYPE STRING,
NO_CITY TYPE STRING,
NO_COUNTRY TYPE STRING,
NO_REGION TYPE STRING,
NO_EMAIL TYPE STRING,
DATE_FORMAT TYPE STRING,
CREATE_CHANGE TYPE STRING,
COUNTRY_DESCR TYPE STRING,
COMPANY_NAME1 TYPE STRING,
COMPANY_NAME2 TYPE STRING,
COMPANY_NAME3 TYPE STRING,
COMPANY_NAME4 TYPE STRING,
COMPANY_C_O_NAME TYPE STRING,
NO_NAME_COMPANY TYPE STRING,
ADDR_TYPE TYPE STRING,
DIFFER_SHIP_TO TYPE STRING,
CHANGE_SHIPTO TYPE STRING,
CHANGE_BILLTO TYPE STRING,
NO_REGISTRATION TYPE STRING,
SHIP_EQUAL_BILL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WIC_CUSTOMER_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_WIC_CUSTOMER_STR-TITLE_P sy-vline 
WA_WIC_CUSTOMER_STR-FIRSTNAME sy-vline 
WA_WIC_CUSTOMER_STR-LASTNAME sy-vline 
WA_WIC_CUSTOMER_STR-MIDDLENAME sy-vline 
WA_WIC_CUSTOMER_STR-SECONDNAME sy-vline 
WA_WIC_CUSTOMER_STR-DATE_BIRTH sy-vline 
WA_WIC_CUSTOMER_STR-CITY sy-vline 
WA_WIC_CUSTOMER_STR-DISTRICT sy-vline 
WA_WIC_CUSTOMER_STR-POSTL_COD1 sy-vline 
WA_WIC_CUSTOMER_STR-POSTL_COD2 sy-vline 
WA_WIC_CUSTOMER_STR-PO_BOX sy-vline 
WA_WIC_CUSTOMER_STR-PO_BOX_CIT sy-vline 
WA_WIC_CUSTOMER_STR-STREET sy-vline 
WA_WIC_CUSTOMER_STR-HOUSE_NO sy-vline 
WA_WIC_CUSTOMER_STR-BUILDING sy-vline 
WA_WIC_CUSTOMER_STR-FLOOR sy-vline 
WA_WIC_CUSTOMER_STR-ROOM_NO sy-vline 
WA_WIC_CUSTOMER_STR-COUNTRY sy-vline 
WA_WIC_CUSTOMER_STR-COUNTRYISO sy-vline 
WA_WIC_CUSTOMER_STR-REGION sy-vline 
WA_WIC_CUSTOMER_STR-TEL1_NUMBR sy-vline 
WA_WIC_CUSTOMER_STR-TEL1_EXT sy-vline 
WA_WIC_CUSTOMER_STR-FAX_NUMBER sy-vline 
WA_WIC_CUSTOMER_STR-FAX_EXTENS sy-vline 
WA_WIC_CUSTOMER_STR-E_MAIL sy-vline 
WA_WIC_CUSTOMER_STR-LANGU_P sy-vline 
WA_WIC_CUSTOMER_STR-LANGUP_ISO sy-vline 
WA_WIC_CUSTOMER_STR-CURRENCY sy-vline 
WA_WIC_CUSTOMER_STR-CURRENCY_ISO sy-vline 
WA_WIC_CUSTOMER_STR-TITLE_KEY sy-vline 
WA_WIC_CUSTOMER_STR-ONLY_CHANGE_COMADDRESS sy-vline 
WA_WIC_CUSTOMER_STR-NO_NAME sy-vline 
WA_WIC_CUSTOMER_STR-NO_VALID_D sy-vline 
WA_WIC_CUSTOMER_STR-NO_CITY sy-vline 
WA_WIC_CUSTOMER_STR-NO_COUNTRY sy-vline 
WA_WIC_CUSTOMER_STR-NO_REGION sy-vline 
WA_WIC_CUSTOMER_STR-NO_EMAIL sy-vline 
WA_WIC_CUSTOMER_STR-DATE_FORMAT sy-vline 
WA_WIC_CUSTOMER_STR-CREATE_CHANGE sy-vline 
WA_WIC_CUSTOMER_STR-COUNTRY_DESCR sy-vline 
WA_WIC_CUSTOMER_STR-COMPANY_NAME1 sy-vline 
WA_WIC_CUSTOMER_STR-COMPANY_NAME2 sy-vline 
WA_WIC_CUSTOMER_STR-COMPANY_NAME3 sy-vline 
WA_WIC_CUSTOMER_STR-COMPANY_NAME4 sy-vline 
WA_WIC_CUSTOMER_STR-COMPANY_C_O_NAME sy-vline 
WA_WIC_CUSTOMER_STR-NO_NAME_COMPANY sy-vline 
WA_WIC_CUSTOMER_STR-ADDR_TYPE sy-vline 
WA_WIC_CUSTOMER_STR-DIFFER_SHIP_TO sy-vline 
WA_WIC_CUSTOMER_STR-CHANGE_SHIPTO sy-vline 
WA_WIC_CUSTOMER_STR-CHANGE_BILLTO sy-vline 
WA_WIC_CUSTOMER_STR-NO_REGISTRATION sy-vline 
WA_WIC_CUSTOMER_STR-SHIP_EQUAL_BILL sy-vline      INTO ld_text SEPARATED BY SPACE.

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