ABAP Select data from SAP table IPURCONTRAPI into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IPURCONTRAPI 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 IPURCONTRAPI. 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 IPURCONTRAPI 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_IPURCONTRAPI TYPE STANDARD TABLE OF IPURCONTRAPI,
      WA_IPURCONTRAPI TYPE IPURCONTRAPI,
      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: <IPURCONTRAPI> TYPE IPURCONTRAPI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPURCONTRAPI
*  INTO TABLE @DATA(IT_IPURCONTRAPI2).
*--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_IPURCONTRAPI INDEX 1 INTO DATA(WA_IPURCONTRAPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPURCONTRAPI>-MANDT = 1.
<IPURCONTRAPI>-PURCHASECONTRACT = 1.
<IPURCONTRAPI>-PURCHASECONTRACTTYPE = 1.
<IPURCONTRAPI>-PURCHASINGDOCUMENTCATEGORY = 1.
<IPURCONTRAPI>-CREATIONDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPURCONTRAPI-SUPPLIER, sy-vline,
  WA_IPURCONTRAPI-COMPANYCODE, sy-vline,
  WA_IPURCONTRAPI-PURCHASINGORGANIZATION, sy-vline,
  WA_IPURCONTRAPI-PURCHASINGGROUP, sy-vline,
  WA_IPURCONTRAPI-DOCUMENTCURRENCY, sy-vline,
  WA_IPURCONTRAPI-INCOTERMSCLASSIFICATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPURCONTRAPI 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_IPURCONTRAPI 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_IPURCONTRAPI INTO WA_IPURCONTRAPI.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIERADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPURCONTRAPI-SUPPLIERADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPURCONTRAPI-SUPPLIERADDRESSID.
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_IPURCONTRAPI_STR, 
MANDT TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTTYPE TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
CREATIONDATE TYPE STRING,
SUPPLIER TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
PAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
NETPAYMENTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
PURCHASECONTRACTTARGETAMOUNT TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
RELEASECODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
SUPPLYINGSUPPLIER TYPE STRING,
INVOICINGPARTY TYPE STRING,
EXCHANGERATE TYPE STRING,
EXCHANGERATEISFIXED TYPE STRING,
QUOTATIONSUBMISSIONDATE TYPE STRING,
SUPPLIERQUOTATION TYPE STRING,
CORRESPNCEXTERNALREFERENCE TYPE STRING,
CORRESPNCINTERNALREFERENCE TYPE STRING,
SUPPLIERRESPSALESPERSONNAME TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
INCOTERMSVERSION TYPE STRING,
INCOTERMSLOCATION1 TYPE STRING,
INCOTERMSLOCATION2 TYPE STRING,
RELEASEISNOTCOMPLETED TYPE STRING,
SUPPLIERADDRESSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPURCONTRAPI_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_IPURCONTRAPI_STR-MANDT sy-vline 
WA_IPURCONTRAPI_STR-PURCHASECONTRACT sy-vline 
WA_IPURCONTRAPI_STR-PURCHASECONTRACTTYPE sy-vline 
WA_IPURCONTRAPI_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_IPURCONTRAPI_STR-CREATIONDATE sy-vline 
WA_IPURCONTRAPI_STR-SUPPLIER sy-vline 
WA_IPURCONTRAPI_STR-COMPANYCODE sy-vline 
WA_IPURCONTRAPI_STR-PURCHASINGORGANIZATION sy-vline 
WA_IPURCONTRAPI_STR-PURCHASINGGROUP sy-vline 
WA_IPURCONTRAPI_STR-DOCUMENTCURRENCY sy-vline 
WA_IPURCONTRAPI_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_IPURCONTRAPI_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_IPURCONTRAPI_STR-PAYMENTTERMS sy-vline 
WA_IPURCONTRAPI_STR-CASHDISCOUNT1DAYS sy-vline 
WA_IPURCONTRAPI_STR-CASHDISCOUNT2DAYS sy-vline 
WA_IPURCONTRAPI_STR-NETPAYMENTDAYS sy-vline 
WA_IPURCONTRAPI_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_IPURCONTRAPI_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_IPURCONTRAPI_STR-PURCHASECONTRACTTARGETAMOUNT sy-vline 
WA_IPURCONTRAPI_STR-VALIDITYSTARTDATE sy-vline 
WA_IPURCONTRAPI_STR-VALIDITYENDDATE sy-vline 
WA_IPURCONTRAPI_STR-RELEASECODE sy-vline 
WA_IPURCONTRAPI_STR-CREATEDBYUSER sy-vline 
WA_IPURCONTRAPI_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_IPURCONTRAPI_STR-SUPPLYINGSUPPLIER sy-vline 
WA_IPURCONTRAPI_STR-INVOICINGPARTY sy-vline 
WA_IPURCONTRAPI_STR-EXCHANGERATE sy-vline 
WA_IPURCONTRAPI_STR-EXCHANGERATEISFIXED sy-vline 
WA_IPURCONTRAPI_STR-QUOTATIONSUBMISSIONDATE sy-vline 
WA_IPURCONTRAPI_STR-SUPPLIERQUOTATION sy-vline 
WA_IPURCONTRAPI_STR-CORRESPNCEXTERNALREFERENCE sy-vline 
WA_IPURCONTRAPI_STR-CORRESPNCINTERNALREFERENCE sy-vline 
WA_IPURCONTRAPI_STR-SUPPLIERRESPSALESPERSONNAME sy-vline 
WA_IPURCONTRAPI_STR-SUPPLIERPHONENUMBER sy-vline 
WA_IPURCONTRAPI_STR-INCOTERMSVERSION sy-vline 
WA_IPURCONTRAPI_STR-INCOTERMSLOCATION1 sy-vline 
WA_IPURCONTRAPI_STR-INCOTERMSLOCATION2 sy-vline 
WA_IPURCONTRAPI_STR-RELEASEISNOTCOMPLETED sy-vline 
WA_IPURCONTRAPI_STR-SUPPLIERADDRESSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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