ABAP Select data from SAP table ASUPPLIER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ASUPPLIER
*  INTO TABLE @DATA(IT_ASUPPLIER2).
*--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_ASUPPLIER INDEX 1 INTO DATA(WA_ASUPPLIER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ASUPPLIER>-MANDT = 1.
<ASUPPLIER>-SUPPLIER = 1.
<ASUPPLIER>-ALTERNATIVEPAYEEACCOUNTNUMBER = 1.
<ASUPPLIER>-AUTHORIZATIONGROUP = 1.
<ASUPPLIER>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ASUPPLIER-CREATIONDATE, sy-vline,
  WA_ASUPPLIER-CUSTOMER, sy-vline,
  WA_ASUPPLIER-PAYMENTISBLOCKEDFORSUPPLIER, sy-vline,
  WA_ASUPPLIER-POSTINGISBLOCKED, sy-vline,
  WA_ASUPPLIER-PURCHASINGISBLOCKED, sy-vline,
  WA_ASUPPLIER-SUPPLIERACCOUNTGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ASUPPLIER 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_ASUPPLIER 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_ASUPPLIER INTO WA_ASUPPLIER.


*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 SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ASUPPLIER-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASUPPLIER-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field FISCALADDRESS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ASUPPLIER-FISCALADDRESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASUPPLIER-FISCALADDRESS.
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_ASUPPLIER_STR, 
MANDT TYPE STRING,
SUPPLIER TYPE STRING,
ALTERNATIVEPAYEEACCOUNTNUMBER TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CUSTOMER TYPE STRING,
PAYMENTISBLOCKEDFORSUPPLIER TYPE STRING,
POSTINGISBLOCKED TYPE STRING,
PURCHASINGISBLOCKED TYPE STRING,
SUPPLIERACCOUNTGROUP TYPE STRING,
SUPPLIERFULLNAME TYPE STRING,
SUPPLIERNAME TYPE STRING,
VATREGISTRATION TYPE STRING,
BIRTHDATE TYPE STRING,
CONCATENATEDINTERNATIONALLOCNO TYPE STRING,
DELETIONINDICATOR TYPE STRING,
FISCALADDRESS TYPE STRING,
INDUSTRY TYPE STRING,
INTERNATIONALLOCATIONNUMBER1 TYPE STRING,
INTERNATIONALLOCATIONNUMBER2 TYPE STRING,
INTERNATIONALLOCATIONNUMBER3 TYPE STRING,
ISNATURALPERSON TYPE STRING,
RESPONSIBLETYPE TYPE STRING,
SUPLRQLTYINPROCMTCERTFNVALIDTO TYPE STRING,
SUPLRQUALITYMANAGEMENTSYSTEM TYPE STRING,
SUPPLIERCORPORATEGROUP TYPE STRING,
SUPPLIERPROCUREMENTBLOCK TYPE STRING,
TAXNUMBER1 TYPE STRING,
TAXNUMBER2 TYPE STRING,
TAXNUMBER3 TYPE STRING,
TAXNUMBER4 TYPE STRING,
TAXNUMBER5 TYPE STRING,
TAXNUMBERRESPONSIBLE TYPE STRING,
TAXNUMBERTYPE TYPE STRING,
SUPLRPROOFOFDELIVRLVTCODE TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
BR_TAXISSPLIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ASUPPLIER_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_ASUPPLIER_STR-MANDT sy-vline 
WA_ASUPPLIER_STR-SUPPLIER sy-vline 
WA_ASUPPLIER_STR-ALTERNATIVEPAYEEACCOUNTNUMBER sy-vline 
WA_ASUPPLIER_STR-AUTHORIZATIONGROUP sy-vline 
WA_ASUPPLIER_STR-CREATEDBYUSER sy-vline 
WA_ASUPPLIER_STR-CREATIONDATE sy-vline 
WA_ASUPPLIER_STR-CUSTOMER sy-vline 
WA_ASUPPLIER_STR-PAYMENTISBLOCKEDFORSUPPLIER sy-vline 
WA_ASUPPLIER_STR-POSTINGISBLOCKED sy-vline 
WA_ASUPPLIER_STR-PURCHASINGISBLOCKED sy-vline 
WA_ASUPPLIER_STR-SUPPLIERACCOUNTGROUP sy-vline 
WA_ASUPPLIER_STR-SUPPLIERFULLNAME sy-vline 
WA_ASUPPLIER_STR-SUPPLIERNAME sy-vline 
WA_ASUPPLIER_STR-VATREGISTRATION sy-vline 
WA_ASUPPLIER_STR-BIRTHDATE sy-vline 
WA_ASUPPLIER_STR-CONCATENATEDINTERNATIONALLOCNO sy-vline 
WA_ASUPPLIER_STR-DELETIONINDICATOR sy-vline 
WA_ASUPPLIER_STR-FISCALADDRESS sy-vline 
WA_ASUPPLIER_STR-INDUSTRY sy-vline 
WA_ASUPPLIER_STR-INTERNATIONALLOCATIONNUMBER1 sy-vline 
WA_ASUPPLIER_STR-INTERNATIONALLOCATIONNUMBER2 sy-vline 
WA_ASUPPLIER_STR-INTERNATIONALLOCATIONNUMBER3 sy-vline 
WA_ASUPPLIER_STR-ISNATURALPERSON sy-vline 
WA_ASUPPLIER_STR-RESPONSIBLETYPE sy-vline 
WA_ASUPPLIER_STR-SUPLRQLTYINPROCMTCERTFNVALIDTO sy-vline 
WA_ASUPPLIER_STR-SUPLRQUALITYMANAGEMENTSYSTEM sy-vline 
WA_ASUPPLIER_STR-SUPPLIERCORPORATEGROUP sy-vline 
WA_ASUPPLIER_STR-SUPPLIERPROCUREMENTBLOCK sy-vline 
WA_ASUPPLIER_STR-TAXNUMBER1 sy-vline 
WA_ASUPPLIER_STR-TAXNUMBER2 sy-vline 
WA_ASUPPLIER_STR-TAXNUMBER3 sy-vline 
WA_ASUPPLIER_STR-TAXNUMBER4 sy-vline 
WA_ASUPPLIER_STR-TAXNUMBER5 sy-vline 
WA_ASUPPLIER_STR-TAXNUMBERRESPONSIBLE sy-vline 
WA_ASUPPLIER_STR-TAXNUMBERTYPE sy-vline 
WA_ASUPPLIER_STR-SUPLRPROOFOFDELIVRLVTCODE sy-vline 
WA_ASUPPLIER_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_ASUPPLIER_STR-BR_TAXISSPLIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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