ABAP Select data from SAP table ISCENTRALPURCHASEORDERTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCENTRALPURCHASEORDERTP
*  INTO TABLE @DATA(IT_ISCENTRALPURCHASEORDERTP2).
*--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_ISCENTRALPURCHASEORDERTP INDEX 1 INTO DATA(WA_ISCENTRALPURCHASEORDERTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCENTRALPURCHASEORDERTP>-KEY = 1.
<ISCENTRALPURCHASEORDERTP>-PARENT_KEY = 1.
<ISCENTRALPURCHASEORDERTP>-ROOT_KEY = 1.
<ISCENTRALPURCHASEORDERTP>-PURCHASEORDER = 1.
<ISCENTRALPURCHASEORDERTP>-EXTSOURCESYSTEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCENTRALPURCHASEORDERTP-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_ISCENTRALPURCHASEORDERTP-PURCHASEORDERTYPE, sy-vline,
  WA_ISCENTRALPURCHASEORDERTP-PURCHASEORDERSUBTYPE, sy-vline,
  WA_ISCENTRALPURCHASEORDERTP-PURCHASINGDOCUMENTORIGIN, sy-vline,
  WA_ISCENTRALPURCHASEORDERTP-CREATEDBYUSER, sy-vline,
  WA_ISCENTRALPURCHASEORDERTP-CREATEDBYUSERFULLNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCENTRALPURCHASEORDERTP 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_ISCENTRALPURCHASEORDERTP 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_ISCENTRALPURCHASEORDERTP INTO WA_ISCENTRALPURCHASEORDERTP.


*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_ISCENTRALPURCHASEORDERTP-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCENTRALPURCHASEORDERTP-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXCRT, internal->external for field EXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISCENTRALPURCHASEORDERTP-EXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCENTRALPURCHASEORDERTP-EXCHANGERATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MANUALSUPPLIERADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCENTRALPURCHASEORDERTP-MANUALSUPPLIERADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCENTRALPURCHASEORDERTP-MANUALSUPPLIERADDRESSID.
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_ISCENTRALPURCHASEORDERTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PURCHASEORDER TYPE STRING,
EXTSOURCESYSTEM TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
PURCHASEORDERSUBTYPE TYPE STRING,
PURCHASINGDOCUMENTORIGIN TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATEDBYUSERFULLNAME TYPE STRING,
CREATIONDATE TYPE STRING,
PURCHASEORDERDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
LANGUAGE TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
RELEASEISNOTCOMPLETED TYPE STRING,
PURCHASINGPROCESSINGSTATUS TYPE STRING,
PURCHASINGCOMPLETENESSSTATUS TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERRESPSALESPERSONNAME TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
SUPPLYINGSUPPLIER TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
INVOICINGPARTY TYPE STRING,
PAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
NETPAYMENTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
INCOTERMSVERSION TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
ISINTRASTATREPORTINGRELEVANT TYPE STRING,
ISINTRASTATREPORTINGEXCLUDED TYPE STRING,
DELIVERYDOCUMENTCONDITION TYPE STRING,
PRICINGPROCEDURE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
EXCHANGERATE TYPE STRING,
EXCHANGERATEFOREDIT TYPE STRING,
EXCHANGERATEISFIXED TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
MANUALSUPPLIERADDRESSID TYPE STRING,
HASNOTE TYPE STRING,
HASATTACHMENT TYPE STRING,
PURCHASEORDERNETAMOUNT TYPE STRING,
NUMBEROFOVERDUEPURORDERS TYPE STRING,
NUMBEROFOVERDUEPURORDITM TYPE STRING,
PURCHASEORDERSTATUS TYPE STRING,
PURCHASEORDERSTATUSNAME TYPE STRING,
APPROVERUSER TYPE STRING,
APPROVERNAME TYPE STRING,
SCHEDULELINEDELIVERYDATE TYPE STRING,
PURORDOUTPUTCTRLTYPE TYPE STRING,
PURCHASEORDEROUTPUTSTATUS TYPE STRING,
PURCHASEORDEROUTPUTSTATUSNAME TYPE STRING,
PURCHASEORDEROUTPUTDATETIME TYPE STRING,
WEIGHTEDRELEVANCE TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCENTRALPURCHASEORDERTP_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_ISCENTRALPURCHASEORDERTP_STR-KEY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PARENT_KEY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-ROOT_KEY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDER sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-EXTSOURCESYSTEM sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDERTYPE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDERSUBTYPE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGDOCUMENTORIGIN sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CREATEDBYUSER sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CREATEDBYUSERFULLNAME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CREATIONDATE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDERDATE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-VALIDITYSTARTDATE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-VALIDITYENDDATE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-LANGUAGE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-RELEASEISNOTCOMPLETED sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGPROCESSINGSTATUS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGCOMPLETENESSSTATUS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-COMPANYCODE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGORGANIZATION sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASINGGROUP sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-SUPPLIER sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-SUPPLIERRESPSALESPERSONNAME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-SUPPLIERPHONENUMBER sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-SUPPLYINGSUPPLIER sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-SUPPLYINGPLANT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-INVOICINGPARTY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PAYMENTTERMS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CASHDISCOUNT1DAYS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CASHDISCOUNT2DAYS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-NETPAYMENTDAYS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-INCOTERMSVERSION sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-INCOTERMSLOCATION1 sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-INCOTERMSLOCATION2 sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-ISINTRASTATREPORTINGRELEVANT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-ISINTRASTATREPORTINGEXCLUDED sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DELIVERYDOCUMENTCONDITION sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PRICINGPROCEDURE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DOCUMENTCURRENCY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-EXCHANGERATE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-EXCHANGERATEFOREDIT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-EXCHANGERATEISFIXED sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-LASTCHANGEDATETIME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-MANUALSUPPLIERADDRESSID sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-HASNOTE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-HASATTACHMENT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDERNETAMOUNT sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-NUMBEROFOVERDUEPURORDERS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-NUMBEROFOVERDUEPURORDITM sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDERSTATUS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDERSTATUSNAME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-APPROVERUSER sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-APPROVERNAME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-SCHEDULELINEDELIVERYDATE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURORDOUTPUTCTRLTYPE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDEROUTPUTSTATUS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDEROUTPUTSTATUSNAME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-PURCHASEORDEROUTPUTDATETIME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-WEIGHTEDRELEVANCE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-ISENDOFPURPOSEBLOCKED sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-HASACTIVEENTITY sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISCENTRALPURCHASEORDERTP_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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