ABAP Select data from SAP table FINS_CFIN_EX_DOCHEADER 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_EX_DOCHEADER 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_EX_DOCHEADER. 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_EX_DOCHEADER 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_EX_DOCHEADER TYPE STANDARD TABLE OF FINS_CFIN_EX_DOCHEADER,
      WA_FINS_CFIN_EX_DOCHEADER TYPE FINS_CFIN_EX_DOCHEADER,
      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_EX_DOCHEADER> TYPE FINS_CFIN_EX_DOCHEADER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_CFIN_EX_DOCHEADER
*  INTO TABLE @DATA(IT_FINS_CFIN_EX_DOCHEADER2).
*--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_EX_DOCHEADER INDEX 1 INTO DATA(WA_FINS_CFIN_EX_DOCHEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_CFIN_EX_DOCHEADER>-UNIQUE_ID = 1.
<FINS_CFIN_EX_DOCHEADER>-ACCOUNTING_LOGSYS = 1.
<FINS_CFIN_EX_DOCHEADER>-OBJECT_LOGSYS = 1.
<FINS_CFIN_EX_DOCHEADER>-OBJECT_KEY = 1.
<FINS_CFIN_EX_DOCHEADER>-REFERENCE_DOCUMENT_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINS_CFIN_EX_DOCHEADER-BUSINESS_ACTIVITY, sy-vline,
  WA_FINS_CFIN_EX_DOCHEADER-DOCUMENT_TYPE, sy-vline,
  WA_FINS_CFIN_EX_DOCHEADER-PREDECESSOR_REFERENCE_KEY, sy-vline,
  WA_FINS_CFIN_EX_DOCHEADER-HEADER_TXT, sy-vline,
  WA_FINS_CFIN_EX_DOCHEADER-DOCUMENT_DATE, sy-vline,
  WA_FINS_CFIN_EX_DOCHEADER-POSTING_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_CFIN_EX_DOCHEADER 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_EX_DOCHEADER 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_EX_DOCHEADER INTO WA_FINS_CFIN_EX_DOCHEADER.


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

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

*Conversion exit EXCRT, internal->external for field EXCHANGE_RATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_EX_DOCHEADER-EXCHANGE_RATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_EX_DOCHEADER-EXCHANGE_RATE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field GLO_BUSINESS_PARTNER1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_EX_DOCHEADER-GLO_BUSINESS_PARTNER1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_EX_DOCHEADER-GLO_BUSINESS_PARTNER1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GLO_BUSINESS_PARTNER2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FINS_CFIN_EX_DOCHEADER-GLO_BUSINESS_PARTNER2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_CFIN_EX_DOCHEADER-GLO_BUSINESS_PARTNER2.
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_EX_DOCHEADER_STR, 
UNIQUE_ID TYPE STRING,
ACCOUNTING_LOGSYS TYPE STRING,
OBJECT_LOGSYS TYPE STRING,
OBJECT_KEY TYPE STRING,
REFERENCE_DOCUMENT_NO TYPE STRING,
BUSINESS_ACTIVITY TYPE STRING,
DOCUMENT_TYPE TYPE STRING,
PREDECESSOR_REFERENCE_KEY TYPE STRING,
HEADER_TXT TYPE STRING,
DOCUMENT_DATE TYPE STRING,
POSTING_DATE TYPE STRING,
PRDTAX_REPORTING_DATE TYPE STRING,
INVOICE_RECEIPT_DATE TYPE STRING,
TRANSLATION_DATE TYPE STRING,
EXCHANGE_RATE TYPE STRING,
COMP_CODE TYPE STRING,
FISCAL_YEAR TYPE STRING,
FISCAL_PERIOD TYPE STRING,
ACCOUNTING_DOC_NO TYPE STRING,
USERNAME TYPE STRING,
CREATE_TIMESTAMP TYPE STRING,
OBJECT_KEY_REVERSAL TYPE STRING,
REASON_REVERSAL TYPE STRING,
CLEARING_DATE TYPE STRING,
TRANSACTION_TYPE TYPE STRING,
LEDGER_GROUP TYPE STRING,
OBJECT_TYPE TYPE STRING,
GLO_REFERENCE1 TYPE STRING,
GLO_DATE1 TYPE STRING,
GLO_REFERENCE2 TYPE STRING,
GLO_DATE2 TYPE STRING,
GLO_REFERENCE3 TYPE STRING,
GLO_DATE3 TYPE STRING,
GLO_REFERENCE4 TYPE STRING,
GLO_DATE4 TYPE STRING,
GLO_REFERENCE5 TYPE STRING,
GLO_DATE5 TYPE STRING,
GLO_BUSINESS_PARTNER1 TYPE STRING,
GLO_BUSINESS_PARTNER2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_CFIN_EX_DOCHEADER_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_EX_DOCHEADER_STR-UNIQUE_ID sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-ACCOUNTING_LOGSYS sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-OBJECT_LOGSYS sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-OBJECT_KEY sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-REFERENCE_DOCUMENT_NO sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-BUSINESS_ACTIVITY sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-DOCUMENT_TYPE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-PREDECESSOR_REFERENCE_KEY sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-HEADER_TXT sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-DOCUMENT_DATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-POSTING_DATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-PRDTAX_REPORTING_DATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-INVOICE_RECEIPT_DATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-TRANSLATION_DATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-EXCHANGE_RATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-COMP_CODE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-FISCAL_YEAR sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-FISCAL_PERIOD sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-ACCOUNTING_DOC_NO sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-USERNAME sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-CREATE_TIMESTAMP sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-OBJECT_KEY_REVERSAL sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-REASON_REVERSAL sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-CLEARING_DATE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-TRANSACTION_TYPE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-LEDGER_GROUP sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-OBJECT_TYPE sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_REFERENCE1 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_DATE1 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_REFERENCE2 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_DATE2 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_REFERENCE3 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_DATE3 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_REFERENCE4 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_DATE4 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_REFERENCE5 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_DATE5 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_BUSINESS_PARTNER1 sy-vline 
WA_FINS_CFIN_EX_DOCHEADER_STR-GLO_BUSINESS_PARTNER2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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