ABAP Select data from SAP table I_CUSTOMER_CDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM I_CUSTOMER_CDS
*  INTO TABLE @DATA(IT_I_CUSTOMER_CDS2).
*--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_I_CUSTOMER_CDS INDEX 1 INTO DATA(WA_I_CUSTOMER_CDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<I_CUSTOMER_CDS>-MANDT = 1.
<I_CUSTOMER_CDS>-CUSTOMER = 1.
<I_CUSTOMER_CDS>-CUSTOMERNAME = 1.
<I_CUSTOMER_CDS>-CUSTOMERFULLNAME = 1.
<I_CUSTOMER_CDS>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_I_CUSTOMER_CDS-CREATIONDATE, sy-vline,
  WA_I_CUSTOMER_CDS-ADDRESSID, sy-vline,
  WA_I_CUSTOMER_CDS-CUSTOMERCLASSIFICATION, sy-vline,
  WA_I_CUSTOMER_CDS-VATREGISTRATION, sy-vline,
  WA_I_CUSTOMER_CDS-CUSTOMERACCOUNTGROUP, sy-vline,
  WA_I_CUSTOMER_CDS-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_I_CUSTOMER_CDS 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_I_CUSTOMER_CDS 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_I_CUSTOMER_CDS INTO WA_I_CUSTOMER_CDS.


*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_I_CUSTOMER_CDS-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I_CUSTOMER_CDS-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TRADINGPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I_CUSTOMER_CDS-TRADINGPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I_CUSTOMER_CDS-TRADINGPARTNER.
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_I_CUSTOMER_CDS_STR, 
MANDT TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMERNAME TYPE STRING,
CUSTOMERFULLNAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
ADDRESSID TYPE STRING,
CUSTOMERCLASSIFICATION TYPE STRING,
VATREGISTRATION TYPE STRING,
CUSTOMERACCOUNTGROUP TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
DELIVERYISBLOCKED TYPE STRING,
POSTINGISBLOCKED TYPE STRING,
BILLINGISBLOCKEDFORCUSTOMER TYPE STRING,
ORDERISBLOCKEDFORCUSTOMER TYPE STRING,
INTERNATIONALLOCATIONNUMBER1 TYPE STRING,
ISONETIMEACCOUNT TYPE STRING,
TAXJURISDICTION TYPE STRING,
INDUSTRY TYPE STRING,
TAXNUMBERTYPE TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
TAXNUMBER3 TYPE STRING,
TAXNUMBER4 TYPE STRING,
TAXNUMBER5 TYPE STRING,
TAXNUMBER6 TYPE STRING,
CUSTOMERCORPORATEGROUP TYPE STRING,
SUPPLIER TYPE STRING,
NIELSENREGION TYPE STRING,
INDUSTRYCODE1 TYPE STRING,
INDUSTRYCODE2 TYPE STRING,
INDUSTRYCODE3 TYPE STRING,
INDUSTRYCODE4 TYPE STRING,
INDUSTRYCODE5 TYPE STRING,
COUNTRY TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
CITYNAME TYPE STRING,
POSTALCODE TYPE STRING,
STREETNAME TYPE STRING,
SORTFIELD TYPE STRING,
FAXNUMBER TYPE STRING,
BR_SUFRAMACODE TYPE STRING,
REGION TYPE STRING,
TELEPHONENUMBER1 TYPE STRING,
TELEPHONENUMBER2 TYPE STRING,
ALTERNATIVEPAYERACCOUNT TYPE STRING,
DATAMEDIUMEXCHANGEINDICATOR TYPE STRING,
VATLIABILITY TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
RESPONSIBLETYPE TYPE STRING,
FISCALADDRESS TYPE STRING,
NFPARTNERISNATURALPERSON TYPE STRING,
DELETIONINDICATOR TYPE STRING,
LANGUAGE TYPE STRING,
TRADINGPARTNER TYPE STRING,
DELIVERYDATETYPERULE TYPE STRING,
EXPRESSTRAINSTATIONNAME TYPE STRING,
TRAINSTATIONNAME TYPE STRING,
INTERNATIONALLOCATIONNUMBER2 TYPE STRING,
INTERNATIONALLOCATIONNUMBER3 TYPE STRING,
CITYCODE TYPE STRING,
COUNTY TYPE STRING,
CUSTOMERHASUNLOADINGPOINT TYPE STRING,
CUSTOMERWORKINGTIMECALENDAR TYPE STRING,
ISCOMPETITOR TYPE STRING,
TAXINVOICEREPRESENTATIVENAME TYPE STRING,
BUSINESSTYPE TYPE STRING,
INDUSTRYTYPE TYPE STRING,
TW_COLLVBILLINGISSUPPORTED TYPE STRING,
ALTERNATIVEPAYEEISALLOWED TYPE STRING,
FREEDEFINEDATTRIBUTE01 TYPE STRING,
FREEDEFINEDATTRIBUTE02 TYPE STRING,
FREEDEFINEDATTRIBUTE03 TYPE STRING,
FREEDEFINEDATTRIBUTE04 TYPE STRING,
FREEDEFINEDATTRIBUTE05 TYPE STRING,
FREEDEFINEDATTRIBUTE06 TYPE STRING,
FREEDEFINEDATTRIBUTE07 TYPE STRING,
FREEDEFINEDATTRIBUTE08 TYPE STRING,
FREEDEFINEDATTRIBUTE09 TYPE STRING,
FREEDEFINEDATTRIBUTE10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_I_CUSTOMER_CDS_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_I_CUSTOMER_CDS_STR-MANDT sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMER sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERNAME sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERFULLNAME sy-vline 
WA_I_CUSTOMER_CDS_STR-CREATEDBYUSER sy-vline 
WA_I_CUSTOMER_CDS_STR-CREATIONDATE sy-vline 
WA_I_CUSTOMER_CDS_STR-ADDRESSID sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERCLASSIFICATION sy-vline 
WA_I_CUSTOMER_CDS_STR-VATREGISTRATION sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERACCOUNTGROUP sy-vline 
WA_I_CUSTOMER_CDS_STR-AUTHORIZATIONGROUP sy-vline 
WA_I_CUSTOMER_CDS_STR-DELIVERYISBLOCKED sy-vline 
WA_I_CUSTOMER_CDS_STR-POSTINGISBLOCKED sy-vline 
WA_I_CUSTOMER_CDS_STR-BILLINGISBLOCKEDFORCUSTOMER sy-vline 
WA_I_CUSTOMER_CDS_STR-ORDERISBLOCKEDFORCUSTOMER sy-vline 
WA_I_CUSTOMER_CDS_STR-INTERNATIONALLOCATIONNUMBER1 sy-vline 
WA_I_CUSTOMER_CDS_STR-ISONETIMEACCOUNT sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXJURISDICTION sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRY sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBERTYPE sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBER1 sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBER2 sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBER3 sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBER4 sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBER5 sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXNUMBER6 sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERCORPORATEGROUP sy-vline 
WA_I_CUSTOMER_CDS_STR-SUPPLIER sy-vline 
WA_I_CUSTOMER_CDS_STR-NIELSENREGION sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRYCODE1 sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRYCODE2 sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRYCODE3 sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRYCODE4 sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRYCODE5 sy-vline 
WA_I_CUSTOMER_CDS_STR-COUNTRY sy-vline 
WA_I_CUSTOMER_CDS_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_I_CUSTOMER_CDS_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_I_CUSTOMER_CDS_STR-CITYNAME sy-vline 
WA_I_CUSTOMER_CDS_STR-POSTALCODE sy-vline 
WA_I_CUSTOMER_CDS_STR-STREETNAME sy-vline 
WA_I_CUSTOMER_CDS_STR-SORTFIELD sy-vline 
WA_I_CUSTOMER_CDS_STR-FAXNUMBER sy-vline 
WA_I_CUSTOMER_CDS_STR-BR_SUFRAMACODE sy-vline 
WA_I_CUSTOMER_CDS_STR-REGION sy-vline 
WA_I_CUSTOMER_CDS_STR-TELEPHONENUMBER1 sy-vline 
WA_I_CUSTOMER_CDS_STR-TELEPHONENUMBER2 sy-vline 
WA_I_CUSTOMER_CDS_STR-ALTERNATIVEPAYERACCOUNT sy-vline 
WA_I_CUSTOMER_CDS_STR-DATAMEDIUMEXCHANGEINDICATOR sy-vline 
WA_I_CUSTOMER_CDS_STR-VATLIABILITY sy-vline 
WA_I_CUSTOMER_CDS_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_I_CUSTOMER_CDS_STR-RESPONSIBLETYPE sy-vline 
WA_I_CUSTOMER_CDS_STR-FISCALADDRESS sy-vline 
WA_I_CUSTOMER_CDS_STR-NFPARTNERISNATURALPERSON sy-vline 
WA_I_CUSTOMER_CDS_STR-DELETIONINDICATOR sy-vline 
WA_I_CUSTOMER_CDS_STR-LANGUAGE sy-vline 
WA_I_CUSTOMER_CDS_STR-TRADINGPARTNER sy-vline 
WA_I_CUSTOMER_CDS_STR-DELIVERYDATETYPERULE sy-vline 
WA_I_CUSTOMER_CDS_STR-EXPRESSTRAINSTATIONNAME sy-vline 
WA_I_CUSTOMER_CDS_STR-TRAINSTATIONNAME sy-vline 
WA_I_CUSTOMER_CDS_STR-INTERNATIONALLOCATIONNUMBER2 sy-vline 
WA_I_CUSTOMER_CDS_STR-INTERNATIONALLOCATIONNUMBER3 sy-vline 
WA_I_CUSTOMER_CDS_STR-CITYCODE sy-vline 
WA_I_CUSTOMER_CDS_STR-COUNTY sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERHASUNLOADINGPOINT sy-vline 
WA_I_CUSTOMER_CDS_STR-CUSTOMERWORKINGTIMECALENDAR sy-vline 
WA_I_CUSTOMER_CDS_STR-ISCOMPETITOR sy-vline 
WA_I_CUSTOMER_CDS_STR-TAXINVOICEREPRESENTATIVENAME sy-vline 
WA_I_CUSTOMER_CDS_STR-BUSINESSTYPE sy-vline 
WA_I_CUSTOMER_CDS_STR-INDUSTRYTYPE sy-vline 
WA_I_CUSTOMER_CDS_STR-TW_COLLVBILLINGISSUPPORTED sy-vline 
WA_I_CUSTOMER_CDS_STR-ALTERNATIVEPAYEEISALLOWED sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE01 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE02 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE03 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE04 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE05 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE06 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE07 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE08 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE09 sy-vline 
WA_I_CUSTOMER_CDS_STR-FREEDEFINEDATTRIBUTE10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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