ABAP Select data from SAP table PURDOCINFONTWK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PURDOCINFONTWK
*  INTO TABLE @DATA(IT_PURDOCINFONTWK2).
*--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_PURDOCINFONTWK INDEX 1 INTO DATA(WA_PURDOCINFONTWK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PURDOCINFONTWK>-MANDT = 1.
<PURDOCINFONTWK>-PURCHASINGDOCUMENT = 1.
<PURDOCINFONTWK>-PURCHASINGDOCUMENTITEM = 1.
<PURDOCINFONTWK>-FORMATTEDPURCHASINGDOCITEM = 1.
<PURDOCINFONTWK>-PURCHASINGDOCUMENTITEMTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PURDOCINFONTWK-ASSEMBLY, sy-vline,
  WA_PURDOCINFONTWK-ASSEMBLYNAME, sy-vline,
  WA_PURDOCINFONTWK-PLANT, sy-vline,
  WA_PURDOCINFONTWK-PLANTNAME, sy-vline,
  WA_PURDOCINFONTWK-SUBCONTRACTOR, sy-vline,
  WA_PURDOCINFONTWK-SUBCONTRACTORNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PURDOCINFONTWK 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_PURDOCINFONTWK 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_PURDOCINFONTWK INTO WA_PURDOCINFONTWK.


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

*Conversion exit MATN1, internal->external for field ASSEMBLY
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PURDOCINFONTWK-ASSEMBLY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PURDOCINFONTWK-ASSEMBLY.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATERIALCOMPONENT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PURDOCINFONTWK-MATERIALCOMPONENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PURDOCINFONTWK-MATERIALCOMPONENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field PURCHASEORDERQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PURDOCINFONTWK-PURCHASEORDERQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PURDOCINFONTWK-PURCHASEORDERQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PURDOCINFONTWK-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PURDOCINFONTWK-BASEUNIT.
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_PURDOCINFONTWK_STR, 
MANDT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
FORMATTEDPURCHASINGDOCITEM TYPE STRING,
PURCHASINGDOCUMENTITEMTEXT TYPE STRING,
ASSEMBLY TYPE STRING,
ASSEMBLYNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
SUBCONTRACTOR TYPE STRING,
SUBCONTRACTORNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
STORAGELOCATION TYPE STRING,
STORAGELOCATIONNAME TYPE STRING,
REQUIREMENTTRACKING TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTCATEGORYNAME TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
SCHEDAGRMTVALIDITYSTATUS TYPE STRING,
STATUSDESCRIPTION TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
PURCHASEORDERTYPENAME TYPE STRING,
ORDERQUANTITY TYPE STRING,
NETAMOUNT TYPE STRING,
TARGETAMOUNT TYPE STRING,
RELEASEDQUANTITY TYPE STRING,
RELEASEDAMOUNT TYPE STRING,
GOODSRECEIPTQTY TYPE STRING,
GOODSRECEIPTAMOUNTINCOCODECRCY TYPE STRING,
STILLTOBEDELIVEREDQUANTITY TYPE STRING,
STILLTOBEDELIVEREDVALUE TYPE STRING,
SCHEDULELINEDELIVERYDATE TYPE STRING,
OPENPURCHASEORDERQUANTITY TYPE STRING,
DELIVERYSTATUS TYPE STRING,
DELIVERYSTATUSDESCRIPTION TYPE STRING,
MATERIALCOMPONENT TYPE STRING,
MATERIALNAME TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SHIPPINGSTATUS TYPE STRING,
SHIPPINGSTATUSTEXT TYPE STRING,
REQUIREMENTDATE TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
PURCHASEORDERQUANTITYUNIT TYPE STRING,
BASEUNIT TYPE STRING,
PURCHASEORDERITEMCATEGORY TYPE STRING,
SUPPLIERISSUBCONTRACTOR TYPE STRING,
DIFFERENCEINDAYS TYPE STRING,
MRPAREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PURDOCINFONTWK_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_PURDOCINFONTWK_STR-MANDT sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENT sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_PURDOCINFONTWK_STR-FORMATTEDPURCHASINGDOCITEM sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENTITEMTEXT sy-vline 
WA_PURDOCINFONTWK_STR-ASSEMBLY sy-vline 
WA_PURDOCINFONTWK_STR-ASSEMBLYNAME sy-vline 
WA_PURDOCINFONTWK_STR-PLANT sy-vline 
WA_PURDOCINFONTWK_STR-PLANTNAME sy-vline 
WA_PURDOCINFONTWK_STR-SUBCONTRACTOR sy-vline 
WA_PURDOCINFONTWK_STR-SUBCONTRACTORNAME sy-vline 
WA_PURDOCINFONTWK_STR-MATERIALGROUP sy-vline 
WA_PURDOCINFONTWK_STR-MATERIALGROUPNAME sy-vline 
WA_PURDOCINFONTWK_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_PURDOCINFONTWK_STR-COMPANYCODE sy-vline 
WA_PURDOCINFONTWK_STR-COMPANYCODENAME sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGORGANIZATION sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGGROUP sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGGROUPNAME sy-vline 
WA_PURDOCINFONTWK_STR-STORAGELOCATION sy-vline 
WA_PURDOCINFONTWK_STR-STORAGELOCATIONNAME sy-vline 
WA_PURDOCINFONTWK_STR-REQUIREMENTTRACKING sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENTCATEGORYNAME sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_PURDOCINFONTWK_STR-SCHEDAGRMTVALIDITYSTATUS sy-vline 
WA_PURDOCINFONTWK_STR-STATUSDESCRIPTION sy-vline 
WA_PURDOCINFONTWK_STR-VALIDITYSTARTDATE sy-vline 
WA_PURDOCINFONTWK_STR-VALIDITYENDDATE sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASEORDERTYPE sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASEORDERTYPENAME sy-vline 
WA_PURDOCINFONTWK_STR-ORDERQUANTITY sy-vline 
WA_PURDOCINFONTWK_STR-NETAMOUNT sy-vline 
WA_PURDOCINFONTWK_STR-TARGETAMOUNT sy-vline 
WA_PURDOCINFONTWK_STR-RELEASEDQUANTITY sy-vline 
WA_PURDOCINFONTWK_STR-RELEASEDAMOUNT sy-vline 
WA_PURDOCINFONTWK_STR-GOODSRECEIPTQTY sy-vline 
WA_PURDOCINFONTWK_STR-GOODSRECEIPTAMOUNTINCOCODECRCY sy-vline 
WA_PURDOCINFONTWK_STR-STILLTOBEDELIVEREDQUANTITY sy-vline 
WA_PURDOCINFONTWK_STR-STILLTOBEDELIVEREDVALUE sy-vline 
WA_PURDOCINFONTWK_STR-SCHEDULELINEDELIVERYDATE sy-vline 
WA_PURDOCINFONTWK_STR-OPENPURCHASEORDERQUANTITY sy-vline 
WA_PURDOCINFONTWK_STR-DELIVERYSTATUS sy-vline 
WA_PURDOCINFONTWK_STR-DELIVERYSTATUSDESCRIPTION sy-vline 
WA_PURDOCINFONTWK_STR-MATERIALCOMPONENT sy-vline 
WA_PURDOCINFONTWK_STR-MATERIALNAME sy-vline 
WA_PURDOCINFONTWK_STR-SUPPLIER sy-vline 
WA_PURDOCINFONTWK_STR-SUPPLIERNAME sy-vline 
WA_PURDOCINFONTWK_STR-SHIPPINGSTATUS sy-vline 
WA_PURDOCINFONTWK_STR-SHIPPINGSTATUSTEXT sy-vline 
WA_PURDOCINFONTWK_STR-REQUIREMENTDATE sy-vline 
WA_PURDOCINFONTWK_STR-REQUIREDQUANTITY sy-vline 
WA_PURDOCINFONTWK_STR-DOCUMENTCURRENCY sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASEORDERQUANTITYUNIT sy-vline 
WA_PURDOCINFONTWK_STR-BASEUNIT sy-vline 
WA_PURDOCINFONTWK_STR-PURCHASEORDERITEMCATEGORY sy-vline 
WA_PURDOCINFONTWK_STR-SUPPLIERISSUBCONTRACTOR sy-vline 
WA_PURDOCINFONTWK_STR-DIFFERENCEINDAYS sy-vline 
WA_PURDOCINFONTWK_STR-MRPAREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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