ABAP Select data from SAP table PIQ_COURSE_DETAILS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_COURSE_DETAILS
*  INTO TABLE @DATA(IT_PIQ_COURSE_DETAILS2).
*--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_PIQ_COURSE_DETAILS INDEX 1 INTO DATA(WA_PIQ_COURSE_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_COURSE_DETAILS>-OBJECT_ID = 1.
<PIQ_COURSE_DETAILS>-CPMAX = 1.
<PIQ_COURSE_DETAILS>-CP_UNITT = 1.
<PIQ_COURSE_DETAILS>-COURSE_NUM = 1.
<PIQ_COURSE_DETAILS>-COURSE_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_COURSE_DETAILS-PRE_REQISTES, sy-vline,
  WA_PIQ_COURSE_DETAILS-CO_REQUISTES, sy-vline,
  WA_PIQ_COURSE_DETAILS-OTHERS, sy-vline,
  WA_PIQ_COURSE_DETAILS-MODULE, sy-vline,
  WA_PIQ_COURSE_DETAILS-MODULE_GROUP, sy-vline,
  WA_PIQ_COURSE_DETAILS-MODULE_GROUP_CATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_COURSE_DETAILS 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_PIQ_COURSE_DETAILS 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_PIQ_COURSE_DETAILS INTO WA_PIQ_COURSE_DETAILS.


*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_PIQ_COURSE_DETAILS_STR, 
OBJECT_ID TYPE STRING,
CPMAX TYPE STRING,
CP_UNITT TYPE STRING,
COURSE_NUM TYPE STRING,
COURSE_NAME TYPE STRING,
PRE_REQISTES TYPE STRING,
CO_REQUISTES TYPE STRING,
OTHERS TYPE STRING,
MODULE TYPE STRING,
MODULE_GROUP TYPE STRING,
MODULE_GROUP_CATEGORY TYPE STRING,
OFFERING_DEPARTMENT TYPE STRING,
DESCRIPTION TYPE STRING,
CO_REQ_INDICATOR TYPE STRING,
PROGRAM_STUDYID TYPE STRING,
ACADEMIC_YEAR TYPE STRING,
ACADEMIC_SESSION TYPE STRING,
AVAILABILITY TYPE STRING,
WAITL_POSITION TYPE STRING,
PROG_TYPE TYPE STRING,
ELIGIBILITY_IND TYPE STRING,
SINGLE_POINT_CONTACT TYPE STRING,
ACADEMICYEAR TYPE STRING,
ACADEMICSESSION TYPE STRING,
MODULE_OFFERED TYPE STRING,
MODULES_COMPOSITE TYPE STRING,
CONDITIONAL_INDICATOR TYPE STRING,
CAPACITY TYPE STRING,
PROG_OF_STUDYT TYPE STRING,
PROG_TYPET TYPE STRING,
RETURN_MESSAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_COURSE_DETAILS_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_PIQ_COURSE_DETAILS_STR-OBJECT_ID sy-vline 
WA_PIQ_COURSE_DETAILS_STR-CPMAX sy-vline 
WA_PIQ_COURSE_DETAILS_STR-CP_UNITT sy-vline 
WA_PIQ_COURSE_DETAILS_STR-COURSE_NUM sy-vline 
WA_PIQ_COURSE_DETAILS_STR-COURSE_NAME sy-vline 
WA_PIQ_COURSE_DETAILS_STR-PRE_REQISTES sy-vline 
WA_PIQ_COURSE_DETAILS_STR-CO_REQUISTES sy-vline 
WA_PIQ_COURSE_DETAILS_STR-OTHERS sy-vline 
WA_PIQ_COURSE_DETAILS_STR-MODULE sy-vline 
WA_PIQ_COURSE_DETAILS_STR-MODULE_GROUP sy-vline 
WA_PIQ_COURSE_DETAILS_STR-MODULE_GROUP_CATEGORY sy-vline 
WA_PIQ_COURSE_DETAILS_STR-OFFERING_DEPARTMENT sy-vline 
WA_PIQ_COURSE_DETAILS_STR-DESCRIPTION sy-vline 
WA_PIQ_COURSE_DETAILS_STR-CO_REQ_INDICATOR sy-vline 
WA_PIQ_COURSE_DETAILS_STR-PROGRAM_STUDYID sy-vline 
WA_PIQ_COURSE_DETAILS_STR-ACADEMIC_YEAR sy-vline 
WA_PIQ_COURSE_DETAILS_STR-ACADEMIC_SESSION sy-vline 
WA_PIQ_COURSE_DETAILS_STR-AVAILABILITY sy-vline 
WA_PIQ_COURSE_DETAILS_STR-WAITL_POSITION sy-vline 
WA_PIQ_COURSE_DETAILS_STR-PROG_TYPE sy-vline 
WA_PIQ_COURSE_DETAILS_STR-ELIGIBILITY_IND sy-vline 
WA_PIQ_COURSE_DETAILS_STR-SINGLE_POINT_CONTACT sy-vline 
WA_PIQ_COURSE_DETAILS_STR-ACADEMICYEAR sy-vline 
WA_PIQ_COURSE_DETAILS_STR-ACADEMICSESSION sy-vline 
WA_PIQ_COURSE_DETAILS_STR-MODULE_OFFERED sy-vline 
WA_PIQ_COURSE_DETAILS_STR-MODULES_COMPOSITE sy-vline 
WA_PIQ_COURSE_DETAILS_STR-CONDITIONAL_INDICATOR sy-vline 
WA_PIQ_COURSE_DETAILS_STR-CAPACITY sy-vline 
WA_PIQ_COURSE_DETAILS_STR-PROG_OF_STUDYT sy-vline 
WA_PIQ_COURSE_DETAILS_STR-PROG_TYPET sy-vline 
WA_PIQ_COURSE_DETAILS_STR-RETURN_MESSAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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