ABAP Select data from SAP table FISV_MREF_DOC_06 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FISV_MREF_DOC_06 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 FISV_MREF_DOC_06. 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 FISV_MREF_DOC_06 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_FISV_MREF_DOC_06 TYPE STANDARD TABLE OF FISV_MREF_DOC_06,
      WA_FISV_MREF_DOC_06 TYPE FISV_MREF_DOC_06,
      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: <FISV_MREF_DOC_06> TYPE FISV_MREF_DOC_06.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FISV_MREF_DOC_06.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FISV_MREF_DOC_06
  INTO TABLE IT_FISV_MREF_DOC_06.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FISV_MREF_DOC_06
*  INTO TABLE @DATA(IT_FISV_MREF_DOC_062).
*--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_FISV_MREF_DOC_06 INDEX 1 INTO DATA(WA_FISV_MREF_DOC_062).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FISV_MREF_DOC_06 ASSIGNING <FISV_MREF_DOC_06>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FISV_MREF_DOC_06>-MANDT = 1.
<FISV_MREF_DOC_06>-COMPANYCODE = 1.
<FISV_MREF_DOC_06>-FISCALYEAR = 1.
<FISV_MREF_DOC_06>-LEDGER = 1.
<FISV_MREF_DOC_06>-SOURCELEDGER = 1.

ENDLOOP.

LOOP AT IT_FISV_MREF_DOC_06 INTO WA_FISV_MREF_DOC_06.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FISV_MREF_DOC_06-ACCOUNTINGDOCUMENT, sy-vline,
  WA_FISV_MREF_DOC_06-ACCOUNTINGDOCUMENTITEM, sy-vline,
  WA_FISV_MREF_DOC_06-DOCUMENTREFERENCEID, sy-vline,
  WA_FISV_MREF_DOC_06-FINANCIALACCOUNTTYPE, sy-vline,
  WA_FISV_MREF_DOC_06-FINANCIALACCOUNTTYPENAME, sy-vline,
  WA_FISV_MREF_DOC_06-DOCUMENTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FISV_MREF_DOC_06 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_FISV_MREF_DOC_06 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_FISV_MREF_DOC_06 INTO WA_FISV_MREF_DOC_06.


*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 GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FISV_MREF_DOC_06-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_MREF_DOC_06-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_MREF_DOC_06-LEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_MREF_DOC_06-LEDGER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOURCELEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_MREF_DOC_06-SOURCELEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_MREF_DOC_06-SOURCELEDGER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNTINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_MREF_DOC_06-ACCOUNTINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_MREF_DOC_06-ACCOUNTINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_MREF_DOC_06-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_MREF_DOC_06-GLACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_MREF_DOC_06-ACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_MREF_DOC_06-ACCOUNT.
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_FISV_MREF_DOC_06_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
LEDGER TYPE STRING,
SOURCELEDGER TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
FINANCIALACCOUNTTYPENAME TYPE STRING,
DOCUMENTDATE TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
ACCOUNTINGDOCUMENTTYPENAME TYPE STRING,
CREATIONDATE TYPE STRING,
POSTINGDATE TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
ACCOUNTINGDOCCREATEDBYUSER TYPE STRING,
POSTINGKEY TYPE STRING,
POSTINGKEYNAME TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
AMOUNTINFUNCTIONALCURRENCY TYPE STRING,
FUNCTIONALCURRENCY TYPE STRING,
KTOPL TYPE STRING,
GLACCOUNT TYPE STRING,
GLACCOUNTNAME TYPE STRING,
ACCOUNT TYPE STRING,
SPECIALGLINDICATOR TYPE STRING,
ACCOUNTTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FISV_MREF_DOC_06_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_FISV_MREF_DOC_06_STR-MANDT sy-vline 
WA_FISV_MREF_DOC_06_STR-COMPANYCODE sy-vline 
WA_FISV_MREF_DOC_06_STR-FISCALYEAR sy-vline 
WA_FISV_MREF_DOC_06_STR-LEDGER sy-vline 
WA_FISV_MREF_DOC_06_STR-SOURCELEDGER sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_FISV_MREF_DOC_06_STR-DOCUMENTREFERENCEID sy-vline 
WA_FISV_MREF_DOC_06_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_FISV_MREF_DOC_06_STR-FINANCIALACCOUNTTYPENAME sy-vline 
WA_FISV_MREF_DOC_06_STR-DOCUMENTDATE sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNTINGDOCUMENTTYPENAME sy-vline 
WA_FISV_MREF_DOC_06_STR-CREATIONDATE sy-vline 
WA_FISV_MREF_DOC_06_STR-POSTINGDATE sy-vline 
WA_FISV_MREF_DOC_06_STR-ASSIGNMENTREFERENCE sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNTINGDOCCREATEDBYUSER sy-vline 
WA_FISV_MREF_DOC_06_STR-POSTINGKEY sy-vline 
WA_FISV_MREF_DOC_06_STR-POSTINGKEYNAME sy-vline 
WA_FISV_MREF_DOC_06_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_FISV_MREF_DOC_06_STR-COMPANYCODECURRENCY sy-vline 
WA_FISV_MREF_DOC_06_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_FISV_MREF_DOC_06_STR-TRANSACTIONCURRENCY sy-vline 
WA_FISV_MREF_DOC_06_STR-AMOUNTINFUNCTIONALCURRENCY sy-vline 
WA_FISV_MREF_DOC_06_STR-FUNCTIONALCURRENCY sy-vline 
WA_FISV_MREF_DOC_06_STR-KTOPL sy-vline 
WA_FISV_MREF_DOC_06_STR-GLACCOUNT sy-vline 
WA_FISV_MREF_DOC_06_STR-GLACCOUNTNAME sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNT sy-vline 
WA_FISV_MREF_DOC_06_STR-SPECIALGLINDICATOR sy-vline 
WA_FISV_MREF_DOC_06_STR-ACCOUNTTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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