ABAP Select data from SAP table PGRCGRINVCHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PGRCGRINVCHIST
*  INTO TABLE @DATA(IT_PGRCGRINVCHIST2).
*--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_PGRCGRINVCHIST INDEX 1 INTO DATA(WA_PGRCGRINVCHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PGRCGRINVCHIST>-MANDT = 1.
<PGRCGRINVCHIST>-PURCHASINGDOCUMENT = 1.
<PGRCGRINVCHIST>-PURCHASINGDOCUMENTITEM = 1.
<PGRCGRINVCHIST>-ACCOUNTASSIGNMENTNUMBER = 1.
<PGRCGRINVCHIST>-PURCHASINGHISTORYDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PGRCGRINVCHIST-PURCHASINGHISTORYDOCUMENTYEAR, sy-vline,
  WA_PGRCGRINVCHIST-PURCHASINGHISTORYDOCUMENT, sy-vline,
  WA_PGRCGRINVCHIST-PURCHASINGHISTORYDOCUMENTITEM, sy-vline,
  WA_PGRCGRINVCHIST-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_PGRCGRINVCHIST-PURCHASINGDOCUMENTTYPE, sy-vline,
  WA_PGRCGRINVCHIST-PURCHASINGDOCUMENTSUBTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PGRCGRINVCHIST 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_PGRCGRINVCHIST 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_PGRCGRINVCHIST INTO WA_PGRCGRINVCHIST.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field INVOICINGPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PGRCGRINVCHIST-INVOICINGPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PGRCGRINVCHIST-INVOICINGPARTY.
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_PGRCGRINVCHIST_STR, 
MANDT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
PURCHASINGHISTORYDOCUMENTTYPE TYPE STRING,
PURCHASINGHISTORYDOCUMENTYEAR TYPE STRING,
PURCHASINGHISTORYDOCUMENT TYPE STRING,
PURCHASINGHISTORYDOCUMENTITEM TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTSUBTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGDOCUMENTORIGIN TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGHISTORYCATEGORY TYPE STRING,
SUPPLIERINVOICE TYPE STRING,
FISCALYEAR TYPE STRING,
INVOICECREATEDBYUSER TYPE STRING,
INVOICECREATIONDATE TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
GRCREATEDBYUSER TYPE STRING,
GOODSRECEIPTLATESTCREATIONDATE TYPE STRING,
INVOICINGPARTY TYPE STRING,
SUPPLIERNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PGRCGRINVCHIST_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_PGRCGRINVCHIST_STR-MANDT sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGDOCUMENT sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_PGRCGRINVCHIST_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGHISTORYDOCUMENTTYPE sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGHISTORYDOCUMENTYEAR sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGHISTORYDOCUMENT sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGHISTORYDOCUMENTITEM sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGDOCUMENTSUBTYPE sy-vline 
WA_PGRCGRINVCHIST_STR-COMPANYCODE sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGDOCUMENTORIGIN sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGORGANIZATION sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGGROUP sy-vline 
WA_PGRCGRINVCHIST_STR-PURCHASINGHISTORYCATEGORY sy-vline 
WA_PGRCGRINVCHIST_STR-SUPPLIERINVOICE sy-vline 
WA_PGRCGRINVCHIST_STR-FISCALYEAR sy-vline 
WA_PGRCGRINVCHIST_STR-INVOICECREATEDBYUSER sy-vline 
WA_PGRCGRINVCHIST_STR-INVOICECREATIONDATE sy-vline 
WA_PGRCGRINVCHIST_STR-MATERIALDOCUMENT sy-vline 
WA_PGRCGRINVCHIST_STR-GRCREATEDBYUSER sy-vline 
WA_PGRCGRINVCHIST_STR-GOODSRECEIPTLATESTCREATIONDATE sy-vline 
WA_PGRCGRINVCHIST_STR-INVOICINGPARTY sy-vline 
WA_PGRCGRINVCHIST_STR-SUPPLIERNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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