ABAP Select data from SAP table IDATESF2200 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IDATESF2200 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 IDATESF2200. 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 IDATESF2200 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_IDATESF2200 TYPE STANDARD TABLE OF IDATESF2200,
      WA_IDATESF2200 TYPE IDATESF2200,
      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: <IDATESF2200> TYPE IDATESF2200.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IDATESF2200.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IDATESF2200
  INTO TABLE IT_IDATESF2200.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDATESF2200
*  INTO TABLE @DATA(IT_IDATESF22002).
*--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_IDATESF2200 INDEX 1 INTO DATA(WA_IDATESF22002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IDATESF2200 ASSIGNING <IDATESF2200>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDATESF2200>-DUMMYMEASURE = 1.
<IDATESF2200>-CURRENTDATETIME = 1.
<IDATESF2200>-CURRENTDATE = 1.
<IDATESF2200>-CURRENTYEAR = 1.
<IDATESF2200>-CURRENTMONTH = 1.

ENDLOOP.

LOOP AT IT_IDATESF2200 INTO WA_IDATESF2200.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDATESF2200-CURRENTDAY, sy-vline,
  WA_IDATESF2200-LASTYEAR, sy-vline,
  WA_IDATESF2200-LASTYEARCURRENTDATE, sy-vline,
  WA_IDATESF2200-TOMORROWDATE, sy-vline,
  WA_IDATESF2200-ENDDATEWEEK, sy-vline,
  WA_IDATESF2200-DATEISINLASTWEEK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDATESF2200 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_IDATESF2200 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_IDATESF2200 INTO WA_IDATESF2200.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IDATESF2200_STR, 
DUMMYMEASURE TYPE STRING,
CURRENTDATETIME TYPE STRING,
CURRENTDATE TYPE STRING,
CURRENTYEAR TYPE STRING,
CURRENTMONTH TYPE STRING,
CURRENTDAY TYPE STRING,
LASTYEAR TYPE STRING,
LASTYEARCURRENTDATE TYPE STRING,
TOMORROWDATE TYPE STRING,
ENDDATEWEEK TYPE STRING,
DATEISINLASTWEEK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDATESF2200_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_IDATESF2200_STR-DUMMYMEASURE sy-vline 
WA_IDATESF2200_STR-CURRENTDATETIME sy-vline 
WA_IDATESF2200_STR-CURRENTDATE sy-vline 
WA_IDATESF2200_STR-CURRENTYEAR sy-vline 
WA_IDATESF2200_STR-CURRENTMONTH sy-vline 
WA_IDATESF2200_STR-CURRENTDAY sy-vline 
WA_IDATESF2200_STR-LASTYEAR sy-vline 
WA_IDATESF2200_STR-LASTYEARCURRENTDATE sy-vline 
WA_IDATESF2200_STR-TOMORROWDATE sy-vline 
WA_IDATESF2200_STR-ENDDATEWEEK sy-vline 
WA_IDATESF2200_STR-DATEISINLASTWEEK sy-vline      INTO ld_text SEPARATED BY SPACE.

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