ABAP Select data from SAP table IWLFSUPLRSTLST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWLFSUPLRSTLST
*  INTO TABLE @DATA(IT_IWLFSUPLRSTLST2).
*--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_IWLFSUPLRSTLST INDEX 1 INTO DATA(WA_IWLFSUPLRSTLST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWLFSUPLRSTLST>-MANDT = 1.
<IWLFSUPLRSTLST>-SUPLRSETTLMTLIST = 1.
<IWLFSUPLRSTLST>-SETTLMTDOCTYPE = 1.
<IWLFSUPLRSTLST>-SETTLMTDOCCAT = 1.
<IWLFSUPLRSTLST>-SETTLMTPROCESSTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWLFSUPLRSTLST-LOGISTICSDATAENTRYCAT, sy-vline,
  WA_IWLFSUPLRSTLST-SUPPLIERPRICINGPROCEDURE, sy-vline,
  WA_IWLFSUPLRSTLST-POSTINGDATE, sy-vline,
  WA_IWLFSUPLRSTLST-SETTLMTMGMTACCTGTRANSFSTS, sy-vline,
  WA_IWLFSUPLRSTLST-INVOICINGPARTY, sy-vline,
  WA_IWLFSUPLRSTLST-PAYEEPARTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWLFSUPLRSTLST 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_IWLFSUPLRSTLST 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_IWLFSUPLRSTLST INTO WA_IWLFSUPLRSTLST.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ALTERNATIVEINVOICINGPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IWLFSUPLRSTLST-ALTERNATIVEINVOICINGPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWLFSUPLRSTLST-ALTERNATIVEINVOICINGPARTY.
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_IWLFSUPLRSTLST_STR, 
MANDT TYPE STRING,
SUPLRSETTLMTLIST TYPE STRING,
SETTLMTDOCTYPE TYPE STRING,
SETTLMTDOCCAT TYPE STRING,
SETTLMTPROCESSTYPE TYPE STRING,
LOGISTICSDATAENTRYCAT TYPE STRING,
SUPPLIERPRICINGPROCEDURE TYPE STRING,
POSTINGDATE TYPE STRING,
SETTLMTMGMTACCTGTRANSFSTS TYPE STRING,
INVOICINGPARTY TYPE STRING,
PAYEEPARTY TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
SUPLRSETTLMTCOMPANYCODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
LASTCHANGEDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
SUPLRSETTLMTLISTCURRENCY TYPE STRING,
EXCHANGERATE TYPE STRING,
EXCHANGERATEISFIXED TYPE STRING,
EXCHANGERATEDATE TYPE STRING,
SUPPLIERTOTALGROSSAMOUNT TYPE STRING,
SUPPLIERTOTALNETAMOUNT TYPE STRING,
SUPPLIERPAYMENTTERMS TYPE STRING,
SUPPLIERCASHDISCOUNT1DAYS TYPE STRING,
SUPPLIERCASHDISCOUNT2DAYS TYPE STRING,
SUPPLIERNETPAYMENTDAYS TYPE STRING,
SUPPLIERCASHDISCOUNT1PERCENT TYPE STRING,
SUPPLIERCASHDISCOUNT2PERCENT TYPE STRING,
SUPPLIERPAYMENTMETHOD TYPE STRING,
SUPLRTOTELIGIBLEAMTFORCSHDISC TYPE STRING,
SUPLRSETTLMTLISTISCANCELED TYPE STRING,
CANCLDSUPLRSETTLMTLIST TYPE STRING,
SUPPLIERADDITIONALVALUEDAYS TYPE STRING,
SUPPLIERFIXEDVALUEDATE TYPE STRING,
SUPPLIERTOTALTAXAMOUNT TYPE STRING,
SUPPLYINGCOUNTRY TYPE STRING,
STATECENTRALBANKPAYMENTREASON TYPE STRING,
CREDITCONTROLAREA TYPE STRING,
SETTLMTDOCACTIVITYREASON TYPE STRING,
PAYMENTREFERENCE TYPE STRING,
SUPPLIERPAYMENTCURRENCY TYPE STRING,
SUPPLIERPAYTCURRENCYEXCHRATE TYPE STRING,
SETTLMTAPPLSTS TYPE STRING,
EXCHANGERATETYPE TYPE STRING,
ONETIMESUPPLIERADDRESSID TYPE STRING,
FISCALPERIOD TYPE STRING,
SUPLRSETTLMTLISTINCMPLTNSRSN TYPE STRING,
ALTERNATIVEINVOICINGPARTY TYPE STRING,
DOCINTRASTATRELEVANCE TYPE STRING,
TAXDEPARTURECOUNTRY TYPE STRING,
TAXDESTINATIONCOUNTRY TYPE STRING,
ISEUTRIANGULARDEAL TYPE STRING,
SUPPLIERVATREGISTRATION TYPE STRING,
INTRASTATDECLNGDSFLWCAT TYPE STRING,
INCOTERMSVERSION TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
SETTLMTDATE TYPE STRING,
SETTLMTBUSPROCVAR TYPE STRING,
SUPLRSETTLMTCOCODETAXCOUNTRY TYPE STRING,
SETTLMTBUSPROCCAT TYPE STRING,
SEPAMANDATE TYPE STRING,
SETTLMTAPPLSTSGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWLFSUPLRSTLST_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_IWLFSUPLRSTLST_STR-MANDT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRSETTLMTLIST sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTDOCTYPE sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTDOCCAT sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTPROCESSTYPE sy-vline 
WA_IWLFSUPLRSTLST_STR-LOGISTICSDATAENTRYCAT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERPRICINGPROCEDURE sy-vline 
WA_IWLFSUPLRSTLST_STR-POSTINGDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTMGMTACCTGTRANSFSTS sy-vline 
WA_IWLFSUPLRSTLST_STR-INVOICINGPARTY sy-vline 
WA_IWLFSUPLRSTLST_STR-PAYEEPARTY sy-vline 
WA_IWLFSUPLRSTLST_STR-PURCHASINGORGANIZATION sy-vline 
WA_IWLFSUPLRSTLST_STR-PURCHASINGGROUP sy-vline 
WA_IWLFSUPLRSTLST_STR-SALESORGANIZATION sy-vline 
WA_IWLFSUPLRSTLST_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_IWLFSUPLRSTLST_STR-DIVISION sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRSETTLMTCOMPANYCODE sy-vline 
WA_IWLFSUPLRSTLST_STR-CREATEDBYUSER sy-vline 
WA_IWLFSUPLRSTLST_STR-CREATIONDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-CREATIONTIME sy-vline 
WA_IWLFSUPLRSTLST_STR-LASTCHANGEDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-DOCUMENTDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-DOCUMENTREFERENCEID sy-vline 
WA_IWLFSUPLRSTLST_STR-ASSIGNMENTREFERENCE sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRSETTLMTLISTCURRENCY sy-vline 
WA_IWLFSUPLRSTLST_STR-EXCHANGERATE sy-vline 
WA_IWLFSUPLRSTLST_STR-EXCHANGERATEISFIXED sy-vline 
WA_IWLFSUPLRSTLST_STR-EXCHANGERATEDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERTOTALGROSSAMOUNT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERTOTALNETAMOUNT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERPAYMENTTERMS sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERCASHDISCOUNT1DAYS sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERCASHDISCOUNT2DAYS sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERNETPAYMENTDAYS sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERCASHDISCOUNT1PERCENT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERCASHDISCOUNT2PERCENT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERPAYMENTMETHOD sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRTOTELIGIBLEAMTFORCSHDISC sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRSETTLMTLISTISCANCELED sy-vline 
WA_IWLFSUPLRSTLST_STR-CANCLDSUPLRSETTLMTLIST sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERADDITIONALVALUEDAYS sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERFIXEDVALUEDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERTOTALTAXAMOUNT sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLYINGCOUNTRY sy-vline 
WA_IWLFSUPLRSTLST_STR-STATECENTRALBANKPAYMENTREASON sy-vline 
WA_IWLFSUPLRSTLST_STR-CREDITCONTROLAREA sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTDOCACTIVITYREASON sy-vline 
WA_IWLFSUPLRSTLST_STR-PAYMENTREFERENCE sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERPAYMENTCURRENCY sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERPAYTCURRENCYEXCHRATE sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTAPPLSTS sy-vline 
WA_IWLFSUPLRSTLST_STR-EXCHANGERATETYPE sy-vline 
WA_IWLFSUPLRSTLST_STR-ONETIMESUPPLIERADDRESSID sy-vline 
WA_IWLFSUPLRSTLST_STR-FISCALPERIOD sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRSETTLMTLISTINCMPLTNSRSN sy-vline 
WA_IWLFSUPLRSTLST_STR-ALTERNATIVEINVOICINGPARTY sy-vline 
WA_IWLFSUPLRSTLST_STR-DOCINTRASTATRELEVANCE sy-vline 
WA_IWLFSUPLRSTLST_STR-TAXDEPARTURECOUNTRY sy-vline 
WA_IWLFSUPLRSTLST_STR-TAXDESTINATIONCOUNTRY sy-vline 
WA_IWLFSUPLRSTLST_STR-ISEUTRIANGULARDEAL sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPPLIERVATREGISTRATION sy-vline 
WA_IWLFSUPLRSTLST_STR-INTRASTATDECLNGDSFLWCAT sy-vline 
WA_IWLFSUPLRSTLST_STR-INCOTERMSVERSION sy-vline 
WA_IWLFSUPLRSTLST_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_IWLFSUPLRSTLST_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_IWLFSUPLRSTLST_STR-INCOTERMSLOCATION1 sy-vline 
WA_IWLFSUPLRSTLST_STR-INCOTERMSLOCATION2 sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTBUSPROCVAR sy-vline 
WA_IWLFSUPLRSTLST_STR-SUPLRSETTLMTCOCODETAXCOUNTRY sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTBUSPROCCAT sy-vline 
WA_IWLFSUPLRSTLST_STR-SEPAMANDATE sy-vline 
WA_IWLFSUPLRSTLST_STR-SETTLMTAPPLSTSGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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