ABAP Select data from SAP table PRUCFINVATCREXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRUCFINVATCREXT
*  INTO TABLE @DATA(IT_PRUCFINVATCREXT2).
*--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_PRUCFINVATCREXT INDEX 1 INTO DATA(WA_PRUCFINVATCREXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRUCFINVATCREXT>-MANDT = 1.
<PRUCFINVATCREXT>-COMPANYCODE = 1.
<PRUCFINVATCREXT>-INVOICE = 1.
<PRUCFINVATCREXT>-INVOICEYEAR = 1.
<PRUCFINVATCREXT>-CORRECTIONINVOICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRUCFINVATCREXT-CORRECTIONINVOICEYEAR, sy-vline,
  WA_PRUCFINVATCREXT-REVISIONNUMBER, sy-vline,
  WA_PRUCFINVATCREXT-REVISIONINVOICE, sy-vline,
  WA_PRUCFINVATCREXT-REVISIONINVOICEYEAR, sy-vline,
  WA_PRUCFINVATCREXT-SENDERLOGICALSYSTEM, sy-vline,
  WA_PRUCFINVATCREXT-SENDERCOMPANYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRUCFINVATCREXT 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_PRUCFINVATCREXT 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_PRUCFINVATCREXT INTO WA_PRUCFINVATCREXT.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field SENDERREVISIONINVOICEYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PRUCFINVATCREXT-SENDERREVISIONINVOICEYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRUCFINVATCREXT-SENDERREVISIONINVOICEYEAR.
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_PRUCFINVATCREXT_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
INVOICE TYPE STRING,
INVOICEYEAR TYPE STRING,
CORRECTIONINVOICE TYPE STRING,
CORRECTIONINVOICEYEAR TYPE STRING,
REVISIONNUMBER TYPE STRING,
REVISIONINVOICE TYPE STRING,
REVISIONINVOICEYEAR TYPE STRING,
SENDERLOGICALSYSTEM TYPE STRING,
SENDERCOMPANYCODE TYPE STRING,
SENDERINVOICE TYPE STRING,
SENDERINVOICEYEAR TYPE STRING,
SENDERCORRECTIONINVOICE TYPE STRING,
SENDERCORRECTIONINVOICEYEAR TYPE STRING,
SENDERREVISIONINVOICE TYPE STRING,
SENDERREVISIONINVOICEYEAR TYPE STRING,
REVISIONINVOICEDATE TYPE STRING,
REVISIONTAXREPORTINGDATE TYPE STRING,
ORIGINALINVOICEREVISIONNUMBER TYPE STRING,
ORIGINALINVOICEREVISIONDATE TYPE STRING,
EXTERNALINVOICE TYPE STRING,
INVOICEDATE TYPE STRING,
RU_INCOMINGINVOICENUMBER TYPE STRING,
RU_INCOMINGINVOICEDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRUCFINVATCREXT_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_PRUCFINVATCREXT_STR-MANDT sy-vline 
WA_PRUCFINVATCREXT_STR-COMPANYCODE sy-vline 
WA_PRUCFINVATCREXT_STR-INVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-INVOICEYEAR sy-vline 
WA_PRUCFINVATCREXT_STR-CORRECTIONINVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-CORRECTIONINVOICEYEAR sy-vline 
WA_PRUCFINVATCREXT_STR-REVISIONNUMBER sy-vline 
WA_PRUCFINVATCREXT_STR-REVISIONINVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-REVISIONINVOICEYEAR sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERLOGICALSYSTEM sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERCOMPANYCODE sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERINVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERINVOICEYEAR sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERCORRECTIONINVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERCORRECTIONINVOICEYEAR sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERREVISIONINVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-SENDERREVISIONINVOICEYEAR sy-vline 
WA_PRUCFINVATCREXT_STR-REVISIONINVOICEDATE sy-vline 
WA_PRUCFINVATCREXT_STR-REVISIONTAXREPORTINGDATE sy-vline 
WA_PRUCFINVATCREXT_STR-ORIGINALINVOICEREVISIONNUMBER sy-vline 
WA_PRUCFINVATCREXT_STR-ORIGINALINVOICEREVISIONDATE sy-vline 
WA_PRUCFINVATCREXT_STR-EXTERNALINVOICE sy-vline 
WA_PRUCFINVATCREXT_STR-INVOICEDATE sy-vline 
WA_PRUCFINVATCREXT_STR-RU_INCOMINGINVOICENUMBER sy-vline 
WA_PRUCFINVATCREXT_STR-RU_INCOMINGINVOICEDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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