ABAP Select data from SAP table IFCTRYCALWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFCTRYCALWD
*  INTO TABLE @DATA(IT_IFCTRYCALWD2).
*--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_IFCTRYCALWD INDEX 1 INTO DATA(WA_IFCTRYCALWD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFCTRYCALWD>-FACTORYCALENDAR = 1.
<IFCTRYCALWD>-CALENDARYEAR = 1.
<IFCTRYCALWD>-MONTH01WORKINGDAYSSTRING = 1.
<IFCTRYCALWD>-MONTH02WORKINGDAYSSTRING = 1.
<IFCTRYCALWD>-MONTH03WORKINGDAYSSTRING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFCTRYCALWD-MONTH04WORKINGDAYSSTRING, sy-vline,
  WA_IFCTRYCALWD-MONTH05WORKINGDAYSSTRING, sy-vline,
  WA_IFCTRYCALWD-MONTH06WORKINGDAYSSTRING, sy-vline,
  WA_IFCTRYCALWD-MONTH07WORKINGDAYSSTRING, sy-vline,
  WA_IFCTRYCALWD-MONTH08WORKINGDAYSSTRING, sy-vline,
  WA_IFCTRYCALWD-MONTH09WORKINGDAYSSTRING, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFCTRYCALWD 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_IFCTRYCALWD 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_IFCTRYCALWD INTO WA_IFCTRYCALWD.


*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 CALENDARYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IFCTRYCALWD-CALENDARYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFCTRYCALWD-CALENDARYEAR.
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_IFCTRYCALWD_STR, 
FACTORYCALENDAR TYPE STRING,
CALENDARYEAR TYPE STRING,
MONTH01WORKINGDAYSSTRING TYPE STRING,
MONTH02WORKINGDAYSSTRING TYPE STRING,
MONTH03WORKINGDAYSSTRING TYPE STRING,
MONTH04WORKINGDAYSSTRING TYPE STRING,
MONTH05WORKINGDAYSSTRING TYPE STRING,
MONTH06WORKINGDAYSSTRING TYPE STRING,
MONTH07WORKINGDAYSSTRING TYPE STRING,
MONTH08WORKINGDAYSSTRING TYPE STRING,
MONTH09WORKINGDAYSSTRING TYPE STRING,
MONTH10WORKINGDAYSSTRING TYPE STRING,
MONTH11WORKINGDAYSSTRING TYPE STRING,
MONTH12WORKINGDAYSSTRING TYPE STRING,
FACTORYCALYEARSTARTDAYVALUE TYPE STRING,
NUMBEROFNONWORKINGDAYS TYPE STRING,
NUMBEROFWORKINGDAYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFCTRYCALWD_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_IFCTRYCALWD_STR-FACTORYCALENDAR sy-vline 
WA_IFCTRYCALWD_STR-CALENDARYEAR sy-vline 
WA_IFCTRYCALWD_STR-MONTH01WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH02WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH03WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH04WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH05WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH06WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH07WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH08WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH09WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH10WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH11WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-MONTH12WORKINGDAYSSTRING sy-vline 
WA_IFCTRYCALWD_STR-FACTORYCALYEARSTARTDAYVALUE sy-vline 
WA_IFCTRYCALWD_STR-NUMBEROFNONWORKINGDAYS sy-vline 
WA_IFCTRYCALWD_STR-NUMBEROFWORKINGDAYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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