ABAP Select data from SAP table PIQCORR_STRU_S00_COURSE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQCORR_STRU_S00_COURSE 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 PIQCORR_STRU_S00_COURSE. 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 PIQCORR_STRU_S00_COURSE 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_PIQCORR_STRU_S00_COURSE TYPE STANDARD TABLE OF PIQCORR_STRU_S00_COURSE,
      WA_PIQCORR_STRU_S00_COURSE TYPE PIQCORR_STRU_S00_COURSE,
      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: <PIQCORR_STRU_S00_COURSE> TYPE PIQCORR_STRU_S00_COURSE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQCORR_STRU_S00_COURSE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQCORR_STRU_S00_COURSE
  INTO TABLE IT_PIQCORR_STRU_S00_COURSE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCORR_STRU_S00_COURSE
*  INTO TABLE @DATA(IT_PIQCORR_STRU_S00_COURSE2).
*--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_PIQCORR_STRU_S00_COURSE INDEX 1 INTO DATA(WA_PIQCORR_STRU_S00_COURSE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQCORR_STRU_S00_COURSE ASSIGNING <PIQCORR_STRU_S00_COURSE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCORR_STRU_S00_COURSE>-WA_COURSE = 1.
<PIQCORR_STRU_S00_COURSE>-COURSEID = 1.
<PIQCORR_STRU_S00_COURSE>-EXTGRADE = 1.
<PIQCORR_STRU_S00_COURSE>-EXTGRADESCALE = 1.
<PIQCORR_STRU_S00_COURSE>-COREPEATFLAG = 1.

ENDLOOP.

LOOP AT IT_PIQCORR_STRU_S00_COURSE INTO WA_PIQCORR_STRU_S00_COURSE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCORR_STRU_S00_COURSE-HONORSINDIC, sy-vline,
  WA_PIQCORR_STRU_S00_COURSE-EXTCOATMCRED, sy-vline,
  WA_PIQCORR_STRU_S00_COURSE-EXTCOGRDCRED, sy-vline,
  WA_PIQCORR_STRU_S00_COURSE-EXTCOERNCRED, sy-vline,
  WA_PIQCORR_STRU_S00_COURSE-EXTCOCREDTYPE, sy-vline,
  WA_PIQCORR_STRU_S00_COURSE-BASFORCOCRED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCORR_STRU_S00_COURSE 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_PIQCORR_STRU_S00_COURSE 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_PIQCORR_STRU_S00_COURSE INTO WA_PIQCORR_STRU_S00_COURSE.


*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 CUNIT, internal->external for field EXTCOCREDTYPE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQCORR_STRU_S00_COURSE-EXTCOCREDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQCORR_STRU_S00_COURSE-EXTCOCREDTYPE.
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_PIQCORR_STRU_S00_COURSE_STR, 
WA_COURSE TYPE STRING,
COURSEID TYPE STRING,
EXTGRADE TYPE STRING,
EXTGRADESCALE TYPE STRING,
COREPEATFLAG TYPE STRING,
HONORSINDIC TYPE STRING,
EXTCOATMCRED TYPE STRING,
EXTCOGRDCRED TYPE STRING,
EXTCOERNCRED TYPE STRING,
EXTCOCREDTYPE TYPE STRING,
BASFORCOCRED TYPE STRING,
COREFLAG TYPE STRING,
COWITHDRDATE TYPE STRING,
COSESID TYPE STRING,
COSESYEAR TYPE STRING,
COBEGDATE TYPE STRING,
COENDDATE TYPE STRING,
WA_COURSET TYPE STRING,
COURSE_SHORT TYPE STRING,
COURSE_STEXT TYPE STRING,
EXTGRADET TYPE STRING,
EXTGRADESCALET TYPE STRING,
EXTCOCREDTYPET TYPE STRING,
COSEST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCORR_STRU_S00_COURSE_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_PIQCORR_STRU_S00_COURSE_STR-WA_COURSE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COURSEID sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTGRADE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTGRADESCALE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COREPEATFLAG sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-HONORSINDIC sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTCOATMCRED sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTCOGRDCRED sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTCOERNCRED sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTCOCREDTYPE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-BASFORCOCRED sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COREFLAG sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COWITHDRDATE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COSESID sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COSESYEAR sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COBEGDATE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COENDDATE sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-WA_COURSET sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COURSE_SHORT sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COURSE_STEXT sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTGRADET sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTGRADESCALET sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-EXTCOCREDTYPET sy-vline 
WA_PIQCORR_STRU_S00_COURSE_STR-COSEST sy-vline      INTO ld_text SEPARATED BY SPACE.

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