ABAP Select data from SAP table CPURREQN into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPURREQN
*  INTO TABLE @DATA(IT_CPURREQN2).
*--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_CPURREQN INDEX 1 INTO DATA(WA_CPURREQN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPURREQN>-MANDT = 1.
<CPURREQN>-PURCHASEREQUISITION = 1.
<CPURREQN>-PURCHASEREQUISITIONFOREDIT = 1.
<CPURREQN>-PURCHASEREQUISITIONTYPE = 1.
<CPURREQN>-PURCHASINGDOCUMENTTYPENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPURREQN-PURREQNDESCRIPTION, sy-vline,
  WA_CPURREQN-SOURCEDETERMINATION, sy-vline,
  WA_CPURREQN-NUMBEROFITEMS, sy-vline,
  WA_CPURREQN-PURCHASINGDOCUMENTSUBTYPE, sy-vline,
  WA_CPURREQN-LASTCHANGEDATETIME, sy-vline,
  WA_CPURREQN-PURREQNHASADVNCDUSRINTERFACE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPURREQN 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_CPURREQN 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_CPURREQN INTO WA_CPURREQN.


*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_CPURREQN-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPURREQN-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASEREQUISITIONFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CPURREQN-PURCHASEREQUISITIONFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPURREQN-PURCHASEREQUISITIONFOREDIT.
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_CPURREQN_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONFOREDIT TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
PURREQNDESCRIPTION TYPE STRING,
SOURCEDETERMINATION TYPE STRING,
NUMBEROFITEMS TYPE STRING,
PURCHASINGDOCUMENTSUBTYPE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PURREQNHASADVNCDUSRINTERFACE TYPE STRING,
PURREQNHEADERDESCRIPTION TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
PURREQNLIFECYCLESTATUS TYPE STRING,
PURREQNLIFECYCLESTATUSNAME TYPE STRING,
PURREQNISITEMCRTNSUPPORTED TYPE STRING,
PURREQNISLIMITITEMSUPPORTED TYPE STRING,
PURREQNISSTANDARDITEMSUPPORTED TYPE STRING,
PURREQNORIGIN TYPE STRING,
PURREQNORIGINDESC TYPE STRING,
WORKFLOWSCENARIODEFINITION TYPE STRING,
ISPURREQNOVRLREL TYPE STRING,
PURREQNHASCOMMITMENTITEM TYPE STRING,
PURREQNPRICEISHIDDEN TYPE STRING,
PURREQNISAPPLICABLEFORREWORK TYPE STRING,
PURREQNAPPROVERCOMMENTTEXT TYPE STRING,
PURREQNREWORKCOMMENTTEXT TYPE STRING,
PURREQNHDRCURRENCYSOURCEDESC TYPE STRING,
PURCHASINGITEMHASHIERARCHY TYPE STRING,
PURGDOCITEMHASHIERFOREDIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPURREQN_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_CPURREQN_STR-MANDT sy-vline 
WA_CPURREQN_STR-PURCHASEREQUISITION sy-vline 
WA_CPURREQN_STR-PURCHASEREQUISITIONFOREDIT sy-vline 
WA_CPURREQN_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_CPURREQN_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_CPURREQN_STR-PURREQNDESCRIPTION sy-vline 
WA_CPURREQN_STR-SOURCEDETERMINATION sy-vline 
WA_CPURREQN_STR-NUMBEROFITEMS sy-vline 
WA_CPURREQN_STR-PURCHASINGDOCUMENTSUBTYPE sy-vline 
WA_CPURREQN_STR-LASTCHANGEDATETIME sy-vline 
WA_CPURREQN_STR-PURREQNHASADVNCDUSRINTERFACE sy-vline 
WA_CPURREQN_STR-PURREQNHEADERDESCRIPTION sy-vline 
WA_CPURREQN_STR-TOTALNETAMOUNT sy-vline 
WA_CPURREQN_STR-CURRENCY sy-vline 
WA_CPURREQN_STR-PURREQNLIFECYCLESTATUS sy-vline 
WA_CPURREQN_STR-PURREQNLIFECYCLESTATUSNAME sy-vline 
WA_CPURREQN_STR-PURREQNISITEMCRTNSUPPORTED sy-vline 
WA_CPURREQN_STR-PURREQNISLIMITITEMSUPPORTED sy-vline 
WA_CPURREQN_STR-PURREQNISSTANDARDITEMSUPPORTED sy-vline 
WA_CPURREQN_STR-PURREQNORIGIN sy-vline 
WA_CPURREQN_STR-PURREQNORIGINDESC sy-vline 
WA_CPURREQN_STR-WORKFLOWSCENARIODEFINITION sy-vline 
WA_CPURREQN_STR-ISPURREQNOVRLREL sy-vline 
WA_CPURREQN_STR-PURREQNHASCOMMITMENTITEM sy-vline 
WA_CPURREQN_STR-PURREQNPRICEISHIDDEN sy-vline 
WA_CPURREQN_STR-PURREQNISAPPLICABLEFORREWORK sy-vline 
WA_CPURREQN_STR-PURREQNAPPROVERCOMMENTTEXT sy-vline 
WA_CPURREQN_STR-PURREQNREWORKCOMMENTTEXT sy-vline 
WA_CPURREQN_STR-PURREQNHDRCURRENCYSOURCEDESC sy-vline 
WA_CPURREQN_STR-PURCHASINGITEMHASHIERARCHY sy-vline 
WA_CPURREQN_STR-PURGDOCITEMHASHIERFOREDIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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