ABAP Select data from SAP table FINS_S_GL_ITEM_TO_BE_CHANGED into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FINS_S_GL_ITEM_TO_BE_CHANGED 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_S_GL_ITEM_TO_BE_CHANGED. 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_S_GL_ITEM_TO_BE_CHANGED 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_S_GL_ITEM_TO_BE_CHANGED TYPE STANDARD TABLE OF FINS_S_GL_ITEM_TO_BE_CHANGED,
      WA_FINS_S_GL_ITEM_TO_BE_CHANGED TYPE FINS_S_GL_ITEM_TO_BE_CHANGED,
      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_S_GL_ITEM_TO_BE_CHANGED> TYPE FINS_S_GL_ITEM_TO_BE_CHANGED.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINS_S_GL_ITEM_TO_BE_CHANGED
*  INTO TABLE @DATA(IT_FINS_S_GL_ITEM_TO_BE_CHANGED2).
*--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_S_GL_ITEM_TO_BE_CHANGED INDEX 1 INTO DATA(WA_FINS_S_GL_ITEM_TO_BE_CHANGED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINS_S_GL_ITEM_TO_BE_CHANGED>-MANDT = 1.
<FINS_S_GL_ITEM_TO_BE_CHANGED>-BUKRS = 1.
<FINS_S_GL_ITEM_TO_BE_CHANGED>-BELNR = 1.
<FINS_S_GL_ITEM_TO_BE_CHANGED>-GJAHR = 1.
<FINS_S_GL_ITEM_TO_BE_CHANGED>-BUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINS_S_GL_ITEM_TO_BE_CHANGED-SGTXT, sy-vline,
  WA_FINS_S_GL_ITEM_TO_BE_CHANGED-ZUONR, sy-vline,
  WA_FINS_S_GL_ITEM_TO_BE_CHANGED-VALUT, sy-vline,
  WA_FINS_S_GL_ITEM_TO_BE_CHANGED-ZFBDT, sy-vline,
  WA_FINS_S_GL_ITEM_TO_BE_CHANGED-RSTGR, sy-vline,
  WA_FINS_S_GL_ITEM_TO_BE_CHANGED-XREF1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINS_S_GL_ITEM_TO_BE_CHANGED 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_S_GL_ITEM_TO_BE_CHANGED 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_S_GL_ITEM_TO_BE_CHANGED INTO WA_FINS_S_GL_ITEM_TO_BE_CHANGED.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FINS_S_GL_ITEM_TO_BE_CHANGED-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINS_S_GL_ITEM_TO_BE_CHANGED-GJAHR.
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_S_GL_ITEM_TO_BE_CHANGED_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
SGTXT TYPE STRING,
ZUONR TYPE STRING,
VALUT TYPE STRING,
ZFBDT TYPE STRING,
RSTGR TYPE STRING,
XREF1 TYPE STRING,
XREF2 TYPE STRING,
XREF3 TYPE STRING,
LZBKZ TYPE STRING,
LANDL TYPE STRING,
ABPER TYPE STRING,
KIDNO TYPE STRING,
CHG_SGTXT TYPE STRING,
CHG_ZUONR TYPE STRING,
CHG_VALUT TYPE STRING,
CHG_ZFBDT TYPE STRING,
CHG_RSTGR TYPE STRING,
CHG_XREF1 TYPE STRING,
CHG_XREF2 TYPE STRING,
CHG_XREF3 TYPE STRING,
CHG_LZBKZ TYPE STRING,
CHG_LANDL TYPE STRING,
CHG_ABPER TYPE STRING,
CHG_KIDNO TYPE STRING,
DUMMY_INCL_EEW_COBL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINS_S_GL_ITEM_TO_BE_CHANGED_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_S_GL_ITEM_TO_BE_CHANGED_STR-MANDT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-BUKRS sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-BELNR sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-GJAHR sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-BUZEI sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-SGTXT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-ZUONR sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-VALUT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-ZFBDT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-RSTGR sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-XREF1 sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-XREF2 sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-XREF3 sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-LZBKZ sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-LANDL sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-ABPER sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-KIDNO sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_SGTXT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_ZUONR sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_VALUT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_ZFBDT sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_RSTGR sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_XREF1 sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_XREF2 sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_XREF3 sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_LZBKZ sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_LANDL sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_ABPER sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-CHG_KIDNO sy-vline 
WA_FINS_S_GL_ITEM_TO_BE_CHANGED_STR-DUMMY_INCL_EEW_COBL sy-vline      INTO ld_text SEPARATED BY SPACE.

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