ABAP Select data from SAP table IACADEVENTBKNG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IACADEVENTBKNG
*  INTO TABLE @DATA(IT_IACADEVENTBKNG2).
*--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_IACADEVENTBKNG INDEX 1 INTO DATA(WA_IACADEVENTBKNG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IACADEVENTBKNG>-MANDT = 1.
<IACADEVENTBKNG>-STUDENTNUMBER = 1.
<IACADEVENTBKNG>-STUDENTNAME = 1.
<IACADEVENTBKNG>-MODULEBOOKINGID = 1.
<IACADEVENTBKNG>-ACADEMICEVENTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IACADEVENTBKNG-ACADEMICEVENTSHORTNAME, sy-vline,
  WA_IACADEVENTBKNG-ACADEMICEVENTINSTRUCTOR, sy-vline,
  WA_IACADEVENTBKNG-ACADEMICEVENTINSTRUCTORNAME, sy-vline,
  WA_IACADEVENTBKNG-ACADEMICEVENTINSTRUCTORTYPE, sy-vline,
  WA_IACADEVENTBKNG-ACDMCEVENTINSTRUCTORTYPENAME, sy-vline,
  WA_IACADEVENTBKNG-ACADEMICEVENTTYPECATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IACADEVENTBKNG 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_IACADEVENTBKNG 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_IACADEVENTBKNG INTO WA_IACADEVENTBKNG.


*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_IACADEVENTBKNG_STR, 
MANDT TYPE STRING,
STUDENTNUMBER TYPE STRING,
STUDENTNAME TYPE STRING,
MODULEBOOKINGID TYPE STRING,
ACADEMICEVENTNAME TYPE STRING,
ACADEMICEVENTSHORTNAME TYPE STRING,
ACADEMICEVENTINSTRUCTOR TYPE STRING,
ACADEMICEVENTINSTRUCTORNAME TYPE STRING,
ACADEMICEVENTINSTRUCTORTYPE TYPE STRING,
ACDMCEVENTINSTRUCTORTYPENAME TYPE STRING,
ACADEMICEVENTTYPECATEGORY TYPE STRING,
ACADEMICEVENTTYPECATEGORYNAME TYPE STRING,
STUDYMODULE TYPE STRING,
STUDYMODULENAME TYPE STRING,
STUDYMODULESHORTNAME TYPE STRING,
NUMBEROFSTUDENTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IACADEVENTBKNG_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_IACADEVENTBKNG_STR-MANDT sy-vline 
WA_IACADEVENTBKNG_STR-STUDENTNUMBER sy-vline 
WA_IACADEVENTBKNG_STR-STUDENTNAME sy-vline 
WA_IACADEVENTBKNG_STR-MODULEBOOKINGID sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTNAME sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTSHORTNAME sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTINSTRUCTOR sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTINSTRUCTORNAME sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTINSTRUCTORTYPE sy-vline 
WA_IACADEVENTBKNG_STR-ACDMCEVENTINSTRUCTORTYPENAME sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTTYPECATEGORY sy-vline 
WA_IACADEVENTBKNG_STR-ACADEMICEVENTTYPECATEGORYNAME sy-vline 
WA_IACADEVENTBKNG_STR-STUDYMODULE sy-vline 
WA_IACADEVENTBKNG_STR-STUDYMODULENAME sy-vline 
WA_IACADEVENTBKNG_STR-STUDYMODULESHORTNAME sy-vline 
WA_IACADEVENTBKNG_STR-NUMBEROFSTUDENTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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