ABAP Select data from SAP table CRPOVH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRPOVH
*  INTO TABLE @DATA(IT_CRPOVH2).
*--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_CRPOVH INDEX 1 INTO DATA(WA_CRPOVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRPOVH>-MANDT = 1.
<CRPOVH>-PROCUREMENTHUBPO = 1.
<CRPOVH>-EXTSOURCESYSTEM = 1.
<CRPOVH>-PURCHASEORDERTYPE = 1.
<CRPOVH>-SUPPLIER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRPOVH-PROCMTHUBSUPPLIERNAME, sy-vline,
  WA_CRPOVH-COMPANYCODE, sy-vline,
  WA_CRPOVH-PURCHASINGORGANIZATION, sy-vline,
  WA_CRPOVH-PURCHASINGGROUP, sy-vline,
  WA_CRPOVH-PURCHASEORDERSTATUS, sy-vline,
  WA_CRPOVH-PURCHASEORDERDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRPOVH 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_CRPOVH 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_CRPOVH INTO WA_CRPOVH.


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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRPOVH-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRPOVH-SUPPLIER.
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_CRPOVH_STR, 
MANDT TYPE STRING,
PROCUREMENTHUBPO TYPE STRING,
EXTSOURCESYSTEM TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
SUPPLIER TYPE STRING,
PROCMTHUBSUPPLIERNAME TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASEORDERSTATUS TYPE STRING,
PURCHASEORDERDATE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
PROCMTHUBPRODUCT TYPE STRING,
PROCMTHUBPRODUCTGROUP TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PURCHASINGPROCESSINGSTATUS TYPE STRING,
PAYMENTTERMS TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
ISENDOFPURPOSEBLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRPOVH_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_CRPOVH_STR-MANDT sy-vline 
WA_CRPOVH_STR-PROCUREMENTHUBPO sy-vline 
WA_CRPOVH_STR-EXTSOURCESYSTEM sy-vline 
WA_CRPOVH_STR-PURCHASEORDERTYPE sy-vline 
WA_CRPOVH_STR-SUPPLIER sy-vline 
WA_CRPOVH_STR-PROCMTHUBSUPPLIERNAME sy-vline 
WA_CRPOVH_STR-COMPANYCODE sy-vline 
WA_CRPOVH_STR-PURCHASINGORGANIZATION sy-vline 
WA_CRPOVH_STR-PURCHASINGGROUP sy-vline 
WA_CRPOVH_STR-PURCHASEORDERSTATUS sy-vline 
WA_CRPOVH_STR-PURCHASEORDERDATE sy-vline 
WA_CRPOVH_STR-DOCUMENTCURRENCY sy-vline 
WA_CRPOVH_STR-PROCMTHUBPRODUCT sy-vline 
WA_CRPOVH_STR-PROCMTHUBPRODUCTGROUP sy-vline 
WA_CRPOVH_STR-CREATEDBYUSER sy-vline 
WA_CRPOVH_STR-CREATIONDATE sy-vline 
WA_CRPOVH_STR-LASTCHANGEDATETIME sy-vline 
WA_CRPOVH_STR-PURCHASINGPROCESSINGSTATUS sy-vline 
WA_CRPOVH_STR-PAYMENTTERMS sy-vline 
WA_CRPOVH_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_CRPOVH_STR-ISENDOFPURPOSEBLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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