ABAP Select data from SAP table HCMFAB_S_TCAL_EVENT_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMFAB_S_TCAL_EVENT_UI
*  INTO TABLE @DATA(IT_HCMFAB_S_TCAL_EVENT_UI2).
*--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_HCMFAB_S_TCAL_EVENT_UI INDEX 1 INTO DATA(WA_HCMFAB_S_TCAL_EVENT_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMFAB_S_TCAL_EVENT_UI>-APPLICATION_ID = 1.
<HCMFAB_S_TCAL_EVENT_UI>-INSTANCE_ID = 1.
<HCMFAB_S_TCAL_EVENT_UI>-EMPLOYEE_ASSIGNMENT = 1.
<HCMFAB_S_TCAL_EVENT_UI>-VIEW_TYPE = 1.
<HCMFAB_S_TCAL_EVENT_UI>-VIEW_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HCMFAB_S_TCAL_EVENT_UI-REQUESTER_ID, sy-vline,
  WA_HCMFAB_S_TCAL_EVENT_UI-EMPLOYEE_ID, sy-vline,
  WA_HCMFAB_S_TCAL_EVENT_UI-START_DATE, sy-vline,
  WA_HCMFAB_S_TCAL_EVENT_UI-END_DATE, sy-vline,
  WA_HCMFAB_S_TCAL_EVENT_UI-START_TIME, sy-vline,
  WA_HCMFAB_S_TCAL_EVENT_UI-END_TIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMFAB_S_TCAL_EVENT_UI 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_HCMFAB_S_TCAL_EVENT_UI 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_HCMFAB_S_TCAL_EVENT_UI INTO WA_HCMFAB_S_TCAL_EVENT_UI.


*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_HCMFAB_S_TCAL_EVENT_UI_STR, 
APPLICATION_ID TYPE STRING,
INSTANCE_ID TYPE STRING,
EMPLOYEE_ASSIGNMENT TYPE STRING,
VIEW_TYPE TYPE STRING,
VIEW_ID TYPE STRING,
REQUESTER_ID TYPE STRING,
EMPLOYEE_ID TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
START_TIME TYPE STRING,
END_TIME TYPE STRING,
IS_TENTATIVE TYPE STRING,
EVENT_TYPE TYPE STRING,
ICON TYPE STRING,
TITLE TYPE STRING,
DESCRIPTION TYPE STRING,
TOOLTIP TYPE STRING,
ABSENCESTATUS TYPE STRING,
ABSENCESTATUSTEXT TYPE STRING,
ABSENCETYPE TYPE STRING,
ABSENCETYPETEXT TYPE STRING,
ABSENCEDAYS TYPE STRING,
ABSENCEHOURS TYPE STRING,
ABSENCEOPERATION TYPE STRING,
DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMFAB_S_TCAL_EVENT_UI_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_HCMFAB_S_TCAL_EVENT_UI_STR-APPLICATION_ID sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-INSTANCE_ID sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-EMPLOYEE_ASSIGNMENT sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-VIEW_TYPE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-VIEW_ID sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-REQUESTER_ID sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-EMPLOYEE_ID sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-START_DATE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-END_DATE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-START_TIME sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-END_TIME sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-IS_TENTATIVE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-EVENT_TYPE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ICON sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-TITLE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-DESCRIPTION sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-TOOLTIP sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCESTATUS sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCESTATUSTEXT sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCETYPE sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCETYPETEXT sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCEDAYS sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCEHOURS sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-ABSENCEOPERATION sy-vline 
WA_HCMFAB_S_TCAL_EVENT_UI_STR-DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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