ABAP Select data from SAP table FISV_TRK_DOC_02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FISV_TRK_DOC_02 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_TRK_DOC_02. 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_TRK_DOC_02 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_TRK_DOC_02 TYPE STANDARD TABLE OF FISV_TRK_DOC_02,
      WA_FISV_TRK_DOC_02 TYPE FISV_TRK_DOC_02,
      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_TRK_DOC_02> TYPE FISV_TRK_DOC_02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FISV_TRK_DOC_02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FISV_TRK_DOC_02
  INTO TABLE IT_FISV_TRK_DOC_02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FISV_TRK_DOC_02
*  INTO TABLE @DATA(IT_FISV_TRK_DOC_022).
*--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_TRK_DOC_02 INDEX 1 INTO DATA(WA_FISV_TRK_DOC_022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FISV_TRK_DOC_02 ASSIGNING <FISV_TRK_DOC_02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FISV_TRK_DOC_02>-MANDT = 1.
<FISV_TRK_DOC_02>-COMPANYCODE = 1.
<FISV_TRK_DOC_02>-LEDGER = 1.
<FISV_TRK_DOC_02>-ACCOUNTINGDOCUMENT = 1.
<FISV_TRK_DOC_02>-CHANGENR = 1.

ENDLOOP.

LOOP AT IT_FISV_TRK_DOC_02 INTO WA_FISV_TRK_DOC_02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FISV_TRK_DOC_02-TABLENAME, sy-vline,
  WA_FISV_TRK_DOC_02-TABKEY, sy-vline,
  WA_FISV_TRK_DOC_02-FNAME, sy-vline,
  WA_FISV_TRK_DOC_02-JOURNALENTRYITEM, sy-vline,
  WA_FISV_TRK_DOC_02-ROLLNAME, sy-vline,
  WA_FISV_TRK_DOC_02-FIELDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FISV_TRK_DOC_02 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_TRK_DOC_02 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_TRK_DOC_02 INTO WA_FISV_TRK_DOC_02.


*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 LEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_TRK_DOC_02-LEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_TRK_DOC_02-LEDGER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNTINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_TRK_DOC_02-ACCOUNTINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_TRK_DOC_02-ACCOUNTINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGENR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_TRK_DOC_02-CHANGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_TRK_DOC_02-CHANGENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FISV_TRK_DOC_02-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_TRK_DOC_02-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GLACCOUNTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FISV_TRK_DOC_02-GLACCOUNTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FISV_TRK_DOC_02-GLACCOUNTNR.
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_TRK_DOC_02_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
LEDGER TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
CHANGENR TYPE STRING,
TABLENAME TYPE STRING,
TABKEY TYPE STRING,
FNAME TYPE STRING,
JOURNALENTRYITEM TYPE STRING,
ROLLNAME TYPE STRING,
FIELDNAME TYPE STRING,
FISCALYEAR TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDAT TYPE STRING,
OLDVALUE TYPE STRING,
NEWVALUE TYPE STRING,
CHANGEDON TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
TEXT_CASE TYPE STRING,
ACCOUNTTYPE TYPE STRING,
GLACCOUNTNR TYPE STRING,
CHNGIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FISV_TRK_DOC_02_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_TRK_DOC_02_STR-MANDT sy-vline 
WA_FISV_TRK_DOC_02_STR-COMPANYCODE sy-vline 
WA_FISV_TRK_DOC_02_STR-LEDGER sy-vline 
WA_FISV_TRK_DOC_02_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_FISV_TRK_DOC_02_STR-CHANGENR sy-vline 
WA_FISV_TRK_DOC_02_STR-TABLENAME sy-vline 
WA_FISV_TRK_DOC_02_STR-TABKEY sy-vline 
WA_FISV_TRK_DOC_02_STR-FNAME sy-vline 
WA_FISV_TRK_DOC_02_STR-JOURNALENTRYITEM sy-vline 
WA_FISV_TRK_DOC_02_STR-ROLLNAME sy-vline 
WA_FISV_TRK_DOC_02_STR-FIELDNAME sy-vline 
WA_FISV_TRK_DOC_02_STR-FISCALYEAR sy-vline 
WA_FISV_TRK_DOC_02_STR-POSTINGDATE sy-vline 
WA_FISV_TRK_DOC_02_STR-DOCUMENTDATE sy-vline 
WA_FISV_TRK_DOC_02_STR-CHANGEDBY sy-vline 
WA_FISV_TRK_DOC_02_STR-CHANGEDAT sy-vline 
WA_FISV_TRK_DOC_02_STR-OLDVALUE sy-vline 
WA_FISV_TRK_DOC_02_STR-NEWVALUE sy-vline 
WA_FISV_TRK_DOC_02_STR-CHANGEDON sy-vline 
WA_FISV_TRK_DOC_02_STR-CREATIONDATE sy-vline 
WA_FISV_TRK_DOC_02_STR-CREATIONTIME sy-vline 
WA_FISV_TRK_DOC_02_STR-TEXT_CASE sy-vline 
WA_FISV_TRK_DOC_02_STR-ACCOUNTTYPE sy-vline 
WA_FISV_TRK_DOC_02_STR-GLACCOUNTNR sy-vline 
WA_FISV_TRK_DOC_02_STR-CHNGIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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