ABAP Select data from SAP table LSOF_COURSEDATES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSOF_COURSEDATES
*  INTO TABLE @DATA(IT_LSOF_COURSEDATES2).
*--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_LSOF_COURSEDATES INDEX 1 INTO DATA(WA_LSOF_COURSEDATES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSOF_COURSEDATES>-ACTIONS = 1.
<LSOF_COURSEDATES>-SCHEDUL = 1.
<LSOF_COURSEDATES>-LANGUAGE = 1.
<LSOF_COURSEDATES>-AVAIL_SEATS = 1.
<LSOF_COURSEDATES>-LOCATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSOF_COURSEDATES-TIMEZON, sy-vline,
  WA_LSOF_COURSEDATES-OTYPE, sy-vline,
  WA_LSOF_COURSEDATES-OBJID, sy-vline,
  WA_LSOF_COURSEDATES-PLVAR, sy-vline,
  WA_LSOF_COURSEDATES-FAVORITE, sy-vline,
  WA_LSOF_COURSEDATES-EVBEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSOF_COURSEDATES 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_LSOF_COURSEDATES 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_LSOF_COURSEDATES INTO WA_LSOF_COURSEDATES.


*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_LSOF_COURSEDATES_STR, 
ACTIONS TYPE STRING,
SCHEDUL TYPE STRING,
LANGUAGE TYPE STRING,
AVAIL_SEATS TYPE STRING,
LOCATION TYPE STRING,
TIMEZON TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
PLVAR TYPE STRING,
FAVORITE TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
TFORM TYPE STRING,
SUBC_FLAG TYPE STRING,
COUOTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSOF_COURSEDATES_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_LSOF_COURSEDATES_STR-ACTIONS sy-vline 
WA_LSOF_COURSEDATES_STR-SCHEDUL sy-vline 
WA_LSOF_COURSEDATES_STR-LANGUAGE sy-vline 
WA_LSOF_COURSEDATES_STR-AVAIL_SEATS sy-vline 
WA_LSOF_COURSEDATES_STR-LOCATION sy-vline 
WA_LSOF_COURSEDATES_STR-TIMEZON sy-vline 
WA_LSOF_COURSEDATES_STR-OTYPE sy-vline 
WA_LSOF_COURSEDATES_STR-OBJID sy-vline 
WA_LSOF_COURSEDATES_STR-PLVAR sy-vline 
WA_LSOF_COURSEDATES_STR-FAVORITE sy-vline 
WA_LSOF_COURSEDATES_STR-EVBEG sy-vline 
WA_LSOF_COURSEDATES_STR-EVEND sy-vline 
WA_LSOF_COURSEDATES_STR-TFORM sy-vline 
WA_LSOF_COURSEDATES_STR-SUBC_FLAG sy-vline 
WA_LSOF_COURSEDATES_STR-COUOTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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