ABAP Select data from SAP table PRUINVEXTNUMDAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRUINVEXTNUMDAT
*  INTO TABLE @DATA(IT_PRUINVEXTNUMDAT2).
*--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_PRUINVEXTNUMDAT INDEX 1 INTO DATA(WA_PRUINVEXTNUMDAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRUINVEXTNUMDAT>-MANDT = 1.
<PRUINVEXTNUMDAT>-COMPANYCODE = 1.
<PRUINVEXTNUMDAT>-ACCOUNTINGDOCUMENT = 1.
<PRUINVEXTNUMDAT>-FISCALYEAR = 1.
<PRUINVEXTNUMDAT>-EXTERNALINVOICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRUINVEXTNUMDAT-INVOICEDATE, sy-vline,
  WA_PRUINVEXTNUMDAT-SUPPLIER, sy-vline,
  WA_PRUINVEXTNUMDAT-CUSTOMER, sy-vline,
  WA_PRUINVEXTNUMDAT-DEBITCREDITCODE, sy-vline,
  WA_PRUINVEXTNUMDAT-ISNEGATIVEPOSTING, sy-vline,
  WA_PRUINVEXTNUMDAT-DEBITCREDITCODE_REAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRUINVEXTNUMDAT 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_PRUINVEXTNUMDAT 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_PRUINVEXTNUMDAT INTO WA_PRUINVEXTNUMDAT.


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

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

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

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PRUINVEXTNUMDAT-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRUINVEXTNUMDAT-CUSTOMER.
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_PRUINVEXTNUMDAT_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
EXTERNALINVOICE TYPE STRING,
INVOICEDATE TYPE STRING,
SUPPLIER TYPE STRING,
CUSTOMER TYPE STRING,
DEBITCREDITCODE TYPE STRING,
ISNEGATIVEPOSTING TYPE STRING,
DEBITCREDITCODE_REAL TYPE STRING,
ISREVERSAL TYPE STRING,
ISREVERSED TYPE STRING,
ISPSEUDOREVERSAL TYPE STRING,
ISPSEUDOREVERSED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRUINVEXTNUMDAT_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_PRUINVEXTNUMDAT_STR-MANDT sy-vline 
WA_PRUINVEXTNUMDAT_STR-COMPANYCODE sy-vline 
WA_PRUINVEXTNUMDAT_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PRUINVEXTNUMDAT_STR-FISCALYEAR sy-vline 
WA_PRUINVEXTNUMDAT_STR-EXTERNALINVOICE sy-vline 
WA_PRUINVEXTNUMDAT_STR-INVOICEDATE sy-vline 
WA_PRUINVEXTNUMDAT_STR-SUPPLIER sy-vline 
WA_PRUINVEXTNUMDAT_STR-CUSTOMER sy-vline 
WA_PRUINVEXTNUMDAT_STR-DEBITCREDITCODE sy-vline 
WA_PRUINVEXTNUMDAT_STR-ISNEGATIVEPOSTING sy-vline 
WA_PRUINVEXTNUMDAT_STR-DEBITCREDITCODE_REAL sy-vline 
WA_PRUINVEXTNUMDAT_STR-ISREVERSAL sy-vline 
WA_PRUINVEXTNUMDAT_STR-ISREVERSED sy-vline 
WA_PRUINVEXTNUMDAT_STR-ISPSEUDOREVERSAL sy-vline 
WA_PRUINVEXTNUMDAT_STR-ISPSEUDOREVERSED sy-vline      INTO ld_text SEPARATED BY SPACE.

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