ABAP Select data from SAP table FINS_CFIN_S_AV_SI_EX_HEADER_K into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_CFIN_S_AV_SI_EX_HEADER_K
*  INTO TABLE @DATA(IT_FINS_CFIN_S_AV_SI_EX_HEADER_K2).
*--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_FINS_CFIN_S_AV_SI_EX_HEADER_K INDEX 1 INTO DATA(WA_FINS_CFIN_S_AV_SI_EX_HEADER_K2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_CFIN_S_AV_SI_EX_HEADER_K>-SOURCESYSTEMLOGICALSYSTEM = 1.
<FINS_CFIN_S_AV_SI_EX_HEADER_K>-CFINRPLDSUPPLIERINVOICE = 1.
<FINS_CFIN_S_AV_SI_EX_HEADER_K>-FISCALYEAR = 1.
<FINS_CFIN_S_AV_SI_EX_HEADER_K>-COMPANYCODE = 1.
<FINS_CFIN_S_AV_SI_EX_HEADER_K>-DOCUMENTCURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-DOCUMENTDATE, sy-vline,
  WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-INVOICEGROSSAMOUNT, sy-vline,
  WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-INVOICINGPARTY, sy-vline,
  WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-POSTINGDATE, sy-vline,
  WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-CREATIONDATE, sy-vline,
  WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-TIMEENTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_CFIN_S_AV_SI_EX_HEADER_K 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_FINS_CFIN_S_AV_SI_EX_HEADER_K 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_FINS_CFIN_S_AV_SI_EX_HEADER_K INTO WA_FINS_CFIN_S_AV_SI_EX_HEADER_K.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field REVERSEDOCUMENTFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-REVERSEDOCUMENTFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_S_AV_SI_EX_HEADER_K-REVERSEDOCUMENTFISCALYEAR.
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_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR, 
SOURCESYSTEMLOGICALSYSTEM TYPE STRING,
CFINRPLDSUPPLIERINVOICE TYPE STRING,
FISCALYEAR TYPE STRING,
COMPANYCODE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
DOCUMENTDATE TYPE STRING,
INVOICEGROSSAMOUNT TYPE STRING,
INVOICINGPARTY TYPE STRING,
POSTINGDATE TYPE STRING,
CREATIONDATE TYPE STRING,
TIMEENTRY TYPE STRING,
SUPPLIERINVOICESTATUS TYPE STRING,
ISINVOICE TYPE STRING,
REVERSEDOCUMENT TYPE STRING,
REVERSEDOCUMENTFISCALYEAR TYPE STRING,
SUPPLIERINVOICEORIGIN TYPE STRING,
SUPLRINVCTRANSACTIONCATEGORY TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
ELECTRONICINVOICEUUID TYPE STRING,
ISDELETED TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
DUMMY_AVSI_INCL_EEW_PS TYPE STRING,
CHANGEID TYPE STRING,
IUUC_TIMESTAMP TYPE STRING,
ISDELTA TYPE STRING,
NOCHANGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_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_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-SOURCESYSTEMLOGICALSYSTEM sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-CFINRPLDSUPPLIERINVOICE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-FISCALYEAR sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-COMPANYCODE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-DOCUMENTCURRENCY sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-DOCUMENTDATE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-INVOICEGROSSAMOUNT sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-INVOICINGPARTY sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-POSTINGDATE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-CREATIONDATE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-TIMEENTRY sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-SUPPLIERINVOICESTATUS sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-ISINVOICE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-REVERSEDOCUMENT sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-REVERSEDOCUMENTFISCALYEAR sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-SUPPLIERINVOICEORIGIN sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-SUPLRINVCTRANSACTIONCATEGORY sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-ELECTRONICINVOICEUUID sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-ISDELETED sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-LASTCHANGEDATETIME sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-DUMMY_AVSI_INCL_EEW_PS sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-CHANGEID sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-IUUC_TIMESTAMP sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-ISDELTA sy-vline 
WA_FINS_CFIN_S_AV_SI_EX_HEADER_K_STR-NOCHANGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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