ABAP Select data from SAP table CSUPPLIERINVOIDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSUPPLIERINVOIDS
*  INTO TABLE @DATA(IT_CSUPPLIERINVOIDS2).
*--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_CSUPPLIERINVOIDS INDEX 1 INTO DATA(WA_CSUPPLIERINVOIDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSUPPLIERINVOIDS>-MANDT = 1.
<CSUPPLIERINVOIDS>-COMPANYCODE = 1.
<CSUPPLIERINVOIDS>-COMPANYCODENAME = 1.
<CSUPPLIERINVOIDS>-PURCHASEORDER = 1.
<CSUPPLIERINVOIDS>-SUPPLIERINVOICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSUPPLIERINVOIDS-POSTINGDATE, sy-vline,
  WA_CSUPPLIERINVOIDS-INVOICEAMOUNTINTRANSACTIONCRCY, sy-vline,
  WA_CSUPPLIERINVOIDS-SUPPLIER, sy-vline,
  WA_CSUPPLIERINVOIDS-REPORTINGCURRENCY, sy-vline,
  WA_CSUPPLIERINVOIDS-ACCOUNTINGDOCUMENT, sy-vline,
  WA_CSUPPLIERINVOIDS-ACCOUNTINGDOCUMENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSUPPLIERINVOIDS 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_CSUPPLIERINVOIDS 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_CSUPPLIERINVOIDS INTO WA_CSUPPLIERINVOIDS.


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

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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CSUPPLIERINVOIDS-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSUPPLIERINVOIDS-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CLEARINGDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSUPPLIERINVOIDS-CLEARINGDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSUPPLIERINVOIDS-CLEARINGDOCUMENTNUMBER.
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_CSUPPLIERINVOIDS_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
PURCHASEORDER TYPE STRING,
SUPPLIERINVOICE TYPE STRING,
POSTINGDATE TYPE STRING,
INVOICEAMOUNTINTRANSACTIONCRCY TYPE STRING,
SUPPLIER TYPE STRING,
REPORTINGCURRENCY TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
ACCOUNTINGDOCUMENTTYPENAME TYPE STRING,
INVOICEAMOUNTININVOICEDOCCRCY TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
FISCALYEAR TYPE STRING,
POSTINGPERIOD TYPE STRING,
FISCALYEARPERIOD TYPE STRING,
SUPPLIERACCOUNTGROUP TYPE STRING,
SUPPLIERACCOUNTGROUPNAME TYPE STRING,
SUPPLIERNAME TYPE STRING,
ACCOUNTINGDOCEXTERNALREFERENCE TYPE STRING,
ITEMDESCRIPTION TYPE STRING,
DOCUMENTDATE TYPE STRING,
CLEARINGDOCUMENTNUMBER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATEDBYUSERNAME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
CHANGEDBYUSERNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSUPPLIERINVOIDS_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_CSUPPLIERINVOIDS_STR-MANDT sy-vline 
WA_CSUPPLIERINVOIDS_STR-COMPANYCODE sy-vline 
WA_CSUPPLIERINVOIDS_STR-COMPANYCODENAME sy-vline 
WA_CSUPPLIERINVOIDS_STR-PURCHASEORDER sy-vline 
WA_CSUPPLIERINVOIDS_STR-SUPPLIERINVOICE sy-vline 
WA_CSUPPLIERINVOIDS_STR-POSTINGDATE sy-vline 
WA_CSUPPLIERINVOIDS_STR-INVOICEAMOUNTINTRANSACTIONCRCY sy-vline 
WA_CSUPPLIERINVOIDS_STR-SUPPLIER sy-vline 
WA_CSUPPLIERINVOIDS_STR-REPORTINGCURRENCY sy-vline 
WA_CSUPPLIERINVOIDS_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_CSUPPLIERINVOIDS_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_CSUPPLIERINVOIDS_STR-ACCOUNTINGDOCUMENTTYPENAME sy-vline 
WA_CSUPPLIERINVOIDS_STR-INVOICEAMOUNTININVOICEDOCCRCY sy-vline 
WA_CSUPPLIERINVOIDS_STR-DOCUMENTCURRENCY sy-vline 
WA_CSUPPLIERINVOIDS_STR-FISCALYEAR sy-vline 
WA_CSUPPLIERINVOIDS_STR-POSTINGPERIOD sy-vline 
WA_CSUPPLIERINVOIDS_STR-FISCALYEARPERIOD sy-vline 
WA_CSUPPLIERINVOIDS_STR-SUPPLIERACCOUNTGROUP sy-vline 
WA_CSUPPLIERINVOIDS_STR-SUPPLIERACCOUNTGROUPNAME sy-vline 
WA_CSUPPLIERINVOIDS_STR-SUPPLIERNAME sy-vline 
WA_CSUPPLIERINVOIDS_STR-ACCOUNTINGDOCEXTERNALREFERENCE sy-vline 
WA_CSUPPLIERINVOIDS_STR-ITEMDESCRIPTION sy-vline 
WA_CSUPPLIERINVOIDS_STR-DOCUMENTDATE sy-vline 
WA_CSUPPLIERINVOIDS_STR-CLEARINGDOCUMENTNUMBER sy-vline 
WA_CSUPPLIERINVOIDS_STR-CREATEDBYUSER sy-vline 
WA_CSUPPLIERINVOIDS_STR-CREATEDBYUSERNAME sy-vline 
WA_CSUPPLIERINVOIDS_STR-LASTCHANGEDBYUSER sy-vline 
WA_CSUPPLIERINVOIDS_STR-CHANGEDBYUSERNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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