ABAP Select data from SAP table CPURREQNFLLWI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPURREQNFLLWI
*  INTO TABLE @DATA(IT_CPURREQNFLLWI2).
*--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_CPURREQNFLLWI INDEX 1 INTO DATA(WA_CPURREQNFLLWI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPURREQNFLLWI>-MANDT = 1.
<CPURREQNFLLWI>-PURREQNFLLWONDOCDRFTHDRUUID = 1.
<CPURREQNFLLWI>-PURREQNFLLWONDOCDRFTITMUUID = 1.
<CPURREQNFLLWI>-PROCMTHUBPURCHASEREQUISITION = 1.
<CPURREQNFLLWI>-PROCMTHUBPURREQUISITIONITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPURREQNFLLWI-PROCMTHUBPURGDOCITMCATEGORY, sy-vline,
  WA_CPURREQNFLLWI-ITEMCATEGORYNAME, sy-vline,
  WA_CPURREQNFLLWI-PROCMTHUBPRODUCT, sy-vline,
  WA_CPURREQNFLLWI-PROCMTHUBPRODUCTGROUP, sy-vline,
  WA_CPURREQNFLLWI-PURCHASEREQUISITIONITEMTEXT, sy-vline,
  WA_CPURREQNFLLWI-REQUESTEDQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPURREQNFLLWI 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_CPURREQNFLLWI 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_CPURREQNFLLWI INTO WA_CPURREQNFLLWI.


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

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

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

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

*Conversion exit CUNIT, internal->external for field PROCMTHUBORDERPRICEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPURREQNFLLWI-PROCMTHUBORDERPRICEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPURREQNFLLWI-PROCMTHUBORDERPRICEUNIT.
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_CPURREQNFLLWI_STR, 
MANDT TYPE STRING,
PURREQNFLLWONDOCDRFTHDRUUID TYPE STRING,
PURREQNFLLWONDOCDRFTITMUUID TYPE STRING,
PROCMTHUBPURCHASEREQUISITION TYPE STRING,
PROCMTHUBPURREQUISITIONITEM TYPE STRING,
PROCMTHUBPURGDOCITMCATEGORY TYPE STRING,
ITEMCATEGORYNAME TYPE STRING,
PROCMTHUBPRODUCT TYPE STRING,
PROCMTHUBPRODUCTGROUP TYPE STRING,
PURCHASEREQUISITIONITEMTEXT TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
BASEUNIT TYPE STRING,
FORMATTEDPURREQUISITIONITEM TYPE STRING,
PROCMTHUBPLANT TYPE STRING,
PROCMTHUBPLANTNAME TYPE STRING,
PURCHASEREQUISITIONPRICE TYPE STRING,
PURREQNITEMCURRENCY TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PROCUREMENTHUBSOURCESYSTEM TYPE STRING,
PROCMTHUBMATERIALNAME TYPE STRING,
PROCMTHUBDELIVERYDATE TYPE STRING,
PROCMTHUBORDERQUANTITY TYPE STRING,
PROCMTHUBORDERQUANTITYUNIT TYPE STRING,
PROCMTHUBNETPRICEAMOUNT TYPE STRING,
PROCMTHUBDOCUMENTCURRENCY TYPE STRING,
PROCMTHUBNETPRICEQUANTITY TYPE STRING,
PROCMTHUBORDERPRICEUNIT TYPE STRING,
PROCMTHUBTAXCODE TYPE STRING,
INVOICEISGOODSRECEIPTBASED TYPE STRING,
ISEDITABLE TYPE STRING,
PURREQNISVALDINCNTRLREQNPROCG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPURREQNFLLWI_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_CPURREQNFLLWI_STR-MANDT sy-vline 
WA_CPURREQNFLLWI_STR-PURREQNFLLWONDOCDRFTHDRUUID sy-vline 
WA_CPURREQNFLLWI_STR-PURREQNFLLWONDOCDRFTITMUUID sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPURCHASEREQUISITION sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPURREQUISITIONITEM sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPURGDOCITMCATEGORY sy-vline 
WA_CPURREQNFLLWI_STR-ITEMCATEGORYNAME sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPRODUCT sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPRODUCTGROUP sy-vline 
WA_CPURREQNFLLWI_STR-PURCHASEREQUISITIONITEMTEXT sy-vline 
WA_CPURREQNFLLWI_STR-REQUESTEDQUANTITY sy-vline 
WA_CPURREQNFLLWI_STR-BASEUNIT sy-vline 
WA_CPURREQNFLLWI_STR-FORMATTEDPURREQUISITIONITEM sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPLANT sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBPLANTNAME sy-vline 
WA_CPURREQNFLLWI_STR-PURCHASEREQUISITIONPRICE sy-vline 
WA_CPURREQNFLLWI_STR-PURREQNITEMCURRENCY sy-vline 
WA_CPURREQNFLLWI_STR-LASTCHANGEDATETIME sy-vline 
WA_CPURREQNFLLWI_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBMATERIALNAME sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBDELIVERYDATE sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBORDERQUANTITY sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBORDERQUANTITYUNIT sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBNETPRICEAMOUNT sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBDOCUMENTCURRENCY sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBNETPRICEQUANTITY sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBORDERPRICEUNIT sy-vline 
WA_CPURREQNFLLWI_STR-PROCMTHUBTAXCODE sy-vline 
WA_CPURREQNFLLWI_STR-INVOICEISGOODSRECEIPTBASED sy-vline 
WA_CPURREQNFLLWI_STR-ISEDITABLE sy-vline 
WA_CPURREQNFLLWI_STR-PURREQNISVALDINCNTRLREQNPROCG sy-vline      INTO ld_text SEPARATED BY SPACE.

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