ABAP Select data from SAP table CGRCINVPDWTTGDRC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CGRCINVPDWTTGDRC
*  INTO TABLE @DATA(IT_CGRCINVPDWTTGDRC2).
*--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_CGRCINVPDWTTGDRC INDEX 1 INTO DATA(WA_CGRCINVPDWTTGDRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CGRCINVPDWTTGDRC>-MANDT = 1.
<CGRCINVPDWTTGDRC>-COMPANYCODE = 1.
<CGRCINVPDWTTGDRC>-PURCHASEORDER = 1.
<CGRCINVPDWTTGDRC>-PURCHASEORDERITEM = 1.
<CGRCINVPDWTTGDRC>-SUPPLIERINVOICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CGRCINVPDWTTGDRC-FISCALYEAR, sy-vline,
  WA_CGRCINVPDWTTGDRC-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_CGRCINVPDWTTGDRC-PURCHASINGDOCUMENTTYPE, sy-vline,
  WA_CGRCINVPDWTTGDRC-PURCHASINGORGANIZATION, sy-vline,
  WA_CGRCINVPDWTTGDRC-CREATIONDATE, sy-vline,
  WA_CGRCINVPDWTTGDRC-INVOICECREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CGRCINVPDWTTGDRC 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_CGRCINVPDWTTGDRC 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_CGRCINVPDWTTGDRC INTO WA_CGRCINVPDWTTGDRC.


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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CGRCINVPDWTTGDRC-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGRCINVPDWTTGDRC-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field PURCHASINGHISTORYDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CGRCINVPDWTTGDRC-PURCHASINGHISTORYDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGRCINVPDWTTGDRC-PURCHASINGHISTORYDOCUMENTYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASINGHISTORYDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CGRCINVPDWTTGDRC-PURCHASINGHISTORYDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGRCINVPDWTTGDRC-PURCHASINGHISTORYDOCUMENT.
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_CGRCINVPDWTTGDRC_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
SUPPLIERINVOICE TYPE STRING,
FISCALYEAR TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
CREATIONDATE TYPE STRING,
INVOICECREATEDBYUSER TYPE STRING,
GROSSAMOUNT TYPE STRING,
PURCHASINGDOCUMENTCREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGDOCUMENTORIGIN TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERFULLNAME TYPE STRING,
INVOICEGROSSAMOUNT TYPE STRING,
DOCUMENTDATE TYPE STRING,
POSTINGDATE TYPE STRING,
SUPPLIERACCOUNTGROUP TYPE STRING,
INVOICEISEXISTING TYPE STRING,
GOODSRECEIPTISEXISTING TYPE STRING,
PURCHASINGHISTORYDOCUMENTTYPE TYPE STRING,
PURCHASINGHISTORYDOCUMENTYEAR TYPE STRING,
PURCHASINGHISTORYDOCUMENT TYPE STRING,
PURCHASINGHISTORYDOCUMENTITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CGRCINVPDWTTGDRC_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_CGRCINVPDWTTGDRC_STR-MANDT sy-vline 
WA_CGRCINVPDWTTGDRC_STR-COMPANYCODE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASEORDER sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASEORDERITEM sy-vline 
WA_CGRCINVPDWTTGDRC_STR-SUPPLIERINVOICE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-FISCALYEAR sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGORGANIZATION sy-vline 
WA_CGRCINVPDWTTGDRC_STR-CREATIONDATE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-INVOICECREATEDBYUSER sy-vline 
WA_CGRCINVPDWTTGDRC_STR-GROSSAMOUNT sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGDOCUMENTCREATIONDATE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-CREATEDBYUSER sy-vline 
WA_CGRCINVPDWTTGDRC_STR-DOCUMENTCURRENCY sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGGROUP sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGDOCUMENTORIGIN sy-vline 
WA_CGRCINVPDWTTGDRC_STR-LASTCHANGEDATETIME sy-vline 
WA_CGRCINVPDWTTGDRC_STR-SUPPLIER sy-vline 
WA_CGRCINVPDWTTGDRC_STR-SUPPLIERFULLNAME sy-vline 
WA_CGRCINVPDWTTGDRC_STR-INVOICEGROSSAMOUNT sy-vline 
WA_CGRCINVPDWTTGDRC_STR-DOCUMENTDATE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-POSTINGDATE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-SUPPLIERACCOUNTGROUP sy-vline 
WA_CGRCINVPDWTTGDRC_STR-INVOICEISEXISTING sy-vline 
WA_CGRCINVPDWTTGDRC_STR-GOODSRECEIPTISEXISTING sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGHISTORYDOCUMENTTYPE sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGHISTORYDOCUMENTYEAR sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGHISTORYDOCUMENT sy-vline 
WA_CGRCINVPDWTTGDRC_STR-PURCHASINGHISTORYDOCUMENTITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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