ABAP Select data from SAP table CSUPINVLSTHDR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSUPINVLSTHDR
*  INTO TABLE @DATA(IT_CSUPINVLSTHDR2).
*--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_CSUPINVLSTHDR INDEX 1 INTO DATA(WA_CSUPINVLSTHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSUPINVLSTHDR>-MANDT = 1.
<CSUPINVLSTHDR>-SUPPLIERINVOICE = 1.
<CSUPINVLSTHDR>-FISCALYEAR = 1.
<CSUPINVLSTHDR>-SUPPLIERINVOICEWTHNFISCALYEAR = 1.
<CSUPINVLSTHDR>-SUPPLIERINVOICEUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSUPINVLSTHDR-INVOICINGPARTY, sy-vline,
  WA_CSUPINVLSTHDR-INVOICINGPARTYNAME, sy-vline,
  WA_CSUPINVLSTHDR-COMPANYCODE, sy-vline,
  WA_CSUPINVLSTHDR-DOCUMENTDATE, sy-vline,
  WA_CSUPINVLSTHDR-POSTINGDATE, sy-vline,
  WA_CSUPINVLSTHDR-DOCUMENTCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSUPINVLSTHDR 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_CSUPINVLSTHDR 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_CSUPINVLSTHDR INTO WA_CSUPINVLSTHDR.


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

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

*Conversion exit ALPHA, internal->external for field INVOICINGPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSUPINVLSTHDR-INVOICINGPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSUPINVLSTHDR-INVOICINGPARTY.
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_CSUPINVLSTHDR_STR, 
MANDT TYPE STRING,
SUPPLIERINVOICE TYPE STRING,
FISCALYEAR TYPE STRING,
SUPPLIERINVOICEWTHNFISCALYEAR TYPE STRING,
SUPPLIERINVOICEUUID TYPE STRING,
INVOICINGPARTY TYPE STRING,
INVOICINGPARTYNAME TYPE STRING,
COMPANYCODE TYPE STRING,
DOCUMENTDATE TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
SUPPLIERINVOICEORIGIN TYPE STRING,
DUECALCULATIONBASEDATE TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
SUPPLIERINVOICEIDBYINVCGPARTY TYPE STRING,
CREATEDBYUSER TYPE STRING,
DOCUMENTHEADERTEXT TYPE STRING,
CASHDISCOUNT1DUEDATE TYPE STRING,
COMPANYCODENAME TYPE STRING,
ISBLOCKED TYPE STRING,
INVOICEGROSSAMOUNT TYPE STRING,
SUPPLIERINVOICESTATUS TYPE STRING,
INVOICESTATUSANDORIGIN TYPE STRING,
SUPPLIERINVOICESTATUSDESC TYPE STRING,
SUPPLIERINVOICEORIGINDESC TYPE STRING,
INVOICESTATUSANDORIGINDESC TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSUPINVLSTHDR_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_CSUPINVLSTHDR_STR-MANDT sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICE sy-vline 
WA_CSUPINVLSTHDR_STR-FISCALYEAR sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICEWTHNFISCALYEAR sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICEUUID sy-vline 
WA_CSUPINVLSTHDR_STR-INVOICINGPARTY sy-vline 
WA_CSUPINVLSTHDR_STR-INVOICINGPARTYNAME sy-vline 
WA_CSUPINVLSTHDR_STR-COMPANYCODE sy-vline 
WA_CSUPINVLSTHDR_STR-DOCUMENTDATE sy-vline 
WA_CSUPINVLSTHDR_STR-POSTINGDATE sy-vline 
WA_CSUPINVLSTHDR_STR-DOCUMENTCURRENCY sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICEORIGIN sy-vline 
WA_CSUPINVLSTHDR_STR-DUECALCULATIONBASEDATE sy-vline 
WA_CSUPINVLSTHDR_STR-CASHDISCOUNT1DAYS sy-vline 
WA_CSUPINVLSTHDR_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICEIDBYINVCGPARTY sy-vline 
WA_CSUPINVLSTHDR_STR-CREATEDBYUSER sy-vline 
WA_CSUPINVLSTHDR_STR-DOCUMENTHEADERTEXT sy-vline 
WA_CSUPINVLSTHDR_STR-CASHDISCOUNT1DUEDATE sy-vline 
WA_CSUPINVLSTHDR_STR-COMPANYCODENAME sy-vline 
WA_CSUPINVLSTHDR_STR-ISBLOCKED sy-vline 
WA_CSUPINVLSTHDR_STR-INVOICEGROSSAMOUNT sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICESTATUS sy-vline 
WA_CSUPINVLSTHDR_STR-INVOICESTATUSANDORIGIN sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICESTATUSDESC sy-vline 
WA_CSUPINVLSTHDR_STR-SUPPLIERINVOICEORIGINDESC sy-vline 
WA_CSUPINVLSTHDR_STR-INVOICESTATUSANDORIGINDESC sy-vline 
WA_CSUPINVLSTHDR_STR-ISENDOFPURPOSEBLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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