ABAP Select data from SAP table MMPUR_PREQUISITION_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_PREQUISITION_ITEM
*  INTO TABLE @DATA(IT_MMPUR_PREQUISITION_ITEM2).
*--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_MMPUR_PREQUISITION_ITEM INDEX 1 INTO DATA(WA_MMPUR_PREQUISITION_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_PREQUISITION_ITEM>-PURCHASEREQUISITION = 1.
<MMPUR_PREQUISITION_ITEM>-PURCHASEREQUISITIONITEM = 1.
<MMPUR_PREQUISITION_ITEM>-PURCHASINGDOCUMENT = 1.
<MMPUR_PREQUISITION_ITEM>-PURCHASINGDOCUMENTITEM = 1.
<MMPUR_PREQUISITION_ITEM>-PURREQNRELEASESTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_PREQUISITION_ITEM-PURCHASEREQUISITIONTYPE, sy-vline,
  WA_MMPUR_PREQUISITION_ITEM-PURCHASINGDOCUMENTSUBTYPE, sy-vline,
  WA_MMPUR_PREQUISITION_ITEM-PURCHASINGDOCUMENTITEMCATEGORY, sy-vline,
  WA_MMPUR_PREQUISITION_ITEM-PURCHASEREQUISITIONITEMTEXT, sy-vline,
  WA_MMPUR_PREQUISITION_ITEM-ACCOUNTASSIGNMENTCATEGORY, sy-vline,
  WA_MMPUR_PREQUISITION_ITEM-MATERIAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_PREQUISITION_ITEM 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_MMPUR_PREQUISITION_ITEM 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_MMPUR_PREQUISITION_ITEM INTO WA_MMPUR_PREQUISITION_ITEM.


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

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

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

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

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

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

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

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

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

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

*Conversion exit NUMCV, internal->external for field MATERIALREVISIONLEVEL
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PREQUISITION_ITEM-MATERIALREVISIONLEVEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PREQUISITION_ITEM-MATERIALREVISIONLEVEL.
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_MMPUR_PREQUISITION_ITEM_STR, 
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
PURREQNRELEASESTATUS TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASINGDOCUMENTSUBTYPE TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
PURCHASEREQUISITIONITEMTEXT TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
MATERIAL TYPE STRING,
MATERIALGROUP TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
BASEUNIT TYPE STRING,
PURCHASEREQUISITIONPRICE TYPE STRING,
PURREQNPRICEQUANTITY TYPE STRING,
MATERIALGOODSRECEIPTDURATION TYPE STRING,
RELEASECODE TYPE STRING,
PURCHASEREQUISITIONRELEASEDATE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PLANT TYPE STRING,
SOURCEOFSUPPLYISASSIGNED TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
ORDEREDQUANTITY TYPE STRING,
DELIVERYDATE TYPE STRING,
CREATIONDATE TYPE STRING,
PROCESSINGSTATUS TYPE STRING,
PURCHASINGINFORECORD TYPE STRING,
SUPPLIER TYPE STRING,
ISDELETED TYPE STRING,
FIXEDSUPPLIER TYPE STRING,
REQUISITIONERNAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
PURREQCREATIONDATE TYPE STRING,
MANUALDELIVERYADDRESSID TYPE STRING,
PURREQNITEMCURRENCY TYPE STRING,
MATERIALPLANNEDDELIVERYDURN TYPE STRING,
DELIVDATECATEGORY TYPE STRING,
MULTIPLEACCTASSGMTDISTRIBUTION TYPE STRING,
STORAGELOCATION TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURREQNSOURCEOFSUPPLYTYPE TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
CONSUMPTIONPOSTING TYPE STRING,
PURREQNORIGIN TYPE STRING,
ISPURREQNBLOCKED TYPE STRING,
ITEMDELIVERYADDRESSID TYPE STRING,
LANGUAGE TYPE STRING,
ISCLOSED TYPE STRING,
RELEASEISNOTCOMPLETED TYPE STRING,
PURCHASEREQUISITIONSTATUS TYPE STRING,
RELEASESTRATEGY TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
BATCH TYPE STRING,
MATERIALREVISIONLEVEL TYPE STRING,
MINREMAININGSHELFLIFE TYPE STRING,
GOODSRECEIPTISEXPECTED TYPE STRING,
INVOICEISEXPECTED TYPE STRING,
GOODSRECEIPTISNONVALUATED TYPE STRING,
REQUIREMENTTRACKING TYPE STRING,
MRPCONTROLLER TYPE STRING,
PURCHASEREQUISITIONISFIXED TYPE STRING,
PRODUCTTYPE TYPE STRING,
TAXCODE TYPE STRING,
EXPECTEDOVERALLLIMITAMOUNT TYPE STRING,
OVERALLLIMITAMOUNT TYPE STRING,
PERFORMANCEPERIODSTARTDATE TYPE STRING,
PERFORMANCEPERIODENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_PREQUISITION_ITEM_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_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITION sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURREQNRELEASESTATUS sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGDOCUMENTSUBTYPE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONITEMTEXT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MATERIAL sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MATERIALGROUP sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-REQUESTEDQUANTITY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-BASEUNIT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONPRICE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURREQNPRICEQUANTITY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MATERIALGOODSRECEIPTDURATION sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-RELEASECODE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONRELEASEDATE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGGROUP sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PLANT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-SOURCEOFSUPPLYISASSIGNED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-SUPPLYINGPLANT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-ORDEREDQUANTITY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-DELIVERYDATE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-CREATIONDATE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PROCESSINGSTATUS sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASINGINFORECORD sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-SUPPLIER sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-ISDELETED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-FIXEDSUPPLIER sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-REQUISITIONERNAME sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURREQCREATIONDATE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MANUALDELIVERYADDRESSID sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURREQNITEMCURRENCY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MATERIALPLANNEDDELIVERYDURN sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-DELIVDATECATEGORY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MULTIPLEACCTASSGMTDISTRIBUTION sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-STORAGELOCATION sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASECONTRACT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURREQNSOURCEOFSUPPLYTYPE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASECONTRACTITEM sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-CONSUMPTIONPOSTING sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURREQNORIGIN sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-ISPURREQNBLOCKED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-ITEMDELIVERYADDRESSID sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-LANGUAGE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-ISCLOSED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-RELEASEISNOTCOMPLETED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONSTATUS sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-RELEASESTRATEGY sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-BATCH sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MATERIALREVISIONLEVEL sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MINREMAININGSHELFLIFE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-GOODSRECEIPTISEXPECTED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-INVOICEISEXPECTED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-GOODSRECEIPTISNONVALUATED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-REQUIREMENTTRACKING sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-MRPCONTROLLER sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PURCHASEREQUISITIONISFIXED sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PRODUCTTYPE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-TAXCODE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-EXPECTEDOVERALLLIMITAMOUNT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-OVERALLLIMITAMOUNT sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PERFORMANCEPERIODSTARTDATE sy-vline 
WA_MMPUR_PREQUISITION_ITEM_STR-PERFORMANCEPERIODENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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