ABAP Select data from SAP table PIQ_COURSE_INFO 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_INFO 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_INFO. 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_INFO 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_INFO TYPE STANDARD TABLE OF PIQ_COURSE_INFO,
      WA_PIQ_COURSE_INFO TYPE PIQ_COURSE_INFO,
      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_INFO> TYPE PIQ_COURSE_INFO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_COURSE_INFO
*  INTO TABLE @DATA(IT_PIQ_COURSE_INFO2).
*--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_INFO INDEX 1 INTO DATA(WA_PIQ_COURSE_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_COURSE_INFO>-PLVAR = 1.
<PIQ_COURSE_INFO>-EOTYP = 1.
<PIQ_COURSE_INFO>-EVEID = 1.
<PIQ_COURSE_INFO>-EVTEX = 1.
<PIQ_COURSE_INFO>-ETEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_COURSE_INFO-EBEGD, sy-vline,
  WA_PIQ_COURSE_INFO-EENDA, sy-vline,
  WA_PIQ_COURSE_INFO-ETTYP, sy-vline,
  WA_PIQ_COURSE_INFO-ETYID, sy-vline,
  WA_PIQ_COURSE_INFO-EVLNG, sy-vline,
  WA_PIQ_COURSE_INFO-KAPZ1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_COURSE_INFO 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_INFO 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_INFO INTO WA_PIQ_COURSE_INFO.


*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 ISOLA, internal->external for field EVLNG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_COURSE_INFO-EVLNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_COURSE_INFO-EVLNG.
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_PIQ_COURSE_INFO_STR, 
PLVAR TYPE STRING,
EOTYP TYPE STRING,
EVEID TYPE STRING,
EVTEX TYPE STRING,
ETEXT TYPE STRING,
EBEGD TYPE STRING,
EENDA TYPE STRING,
ETTYP TYPE STRING,
ETYID TYPE STRING,
EVLNG TYPE STRING,
KAPZ1 TYPE STRING,
KAPZ2 TYPE STRING,
KAPZ3 TYPE STRING,
FCONT TYPE STRING,
BCONT TYPE STRING,
WCONT TYPE STRING,
LOCID TYPE STRING,
EVLOC TYPE STRING,
TEILX TYPE STRING,
EVFIX TYPE STRING,
ISTAT TYPE STRING,
EVEXT TYPE STRING,
LOCKM TYPE STRING,
HISTO TYPE STRING,
DELET TYPE STRING,
FLUPX TYPE STRING,
NCONT TYPE STRING,
MCONT TYPE STRING,
ORGTY TYPE STRING,
ORGID TYPE STRING,
ORGSH TYPE STRING,
ORGTX TYPE STRING,
EXEMPTFEE TYPE STRING,
NHOURS TYPE STRING,
CATEGORY TYPE STRING,
METHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_COURSE_INFO_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_INFO_STR-PLVAR sy-vline 
WA_PIQ_COURSE_INFO_STR-EOTYP sy-vline 
WA_PIQ_COURSE_INFO_STR-EVEID sy-vline 
WA_PIQ_COURSE_INFO_STR-EVTEX sy-vline 
WA_PIQ_COURSE_INFO_STR-ETEXT sy-vline 
WA_PIQ_COURSE_INFO_STR-EBEGD sy-vline 
WA_PIQ_COURSE_INFO_STR-EENDA sy-vline 
WA_PIQ_COURSE_INFO_STR-ETTYP sy-vline 
WA_PIQ_COURSE_INFO_STR-ETYID sy-vline 
WA_PIQ_COURSE_INFO_STR-EVLNG sy-vline 
WA_PIQ_COURSE_INFO_STR-KAPZ1 sy-vline 
WA_PIQ_COURSE_INFO_STR-KAPZ2 sy-vline 
WA_PIQ_COURSE_INFO_STR-KAPZ3 sy-vline 
WA_PIQ_COURSE_INFO_STR-FCONT sy-vline 
WA_PIQ_COURSE_INFO_STR-BCONT sy-vline 
WA_PIQ_COURSE_INFO_STR-WCONT sy-vline 
WA_PIQ_COURSE_INFO_STR-LOCID sy-vline 
WA_PIQ_COURSE_INFO_STR-EVLOC sy-vline 
WA_PIQ_COURSE_INFO_STR-TEILX sy-vline 
WA_PIQ_COURSE_INFO_STR-EVFIX sy-vline 
WA_PIQ_COURSE_INFO_STR-ISTAT sy-vline 
WA_PIQ_COURSE_INFO_STR-EVEXT sy-vline 
WA_PIQ_COURSE_INFO_STR-LOCKM sy-vline 
WA_PIQ_COURSE_INFO_STR-HISTO sy-vline 
WA_PIQ_COURSE_INFO_STR-DELET sy-vline 
WA_PIQ_COURSE_INFO_STR-FLUPX sy-vline 
WA_PIQ_COURSE_INFO_STR-NCONT sy-vline 
WA_PIQ_COURSE_INFO_STR-MCONT sy-vline 
WA_PIQ_COURSE_INFO_STR-ORGTY sy-vline 
WA_PIQ_COURSE_INFO_STR-ORGID sy-vline 
WA_PIQ_COURSE_INFO_STR-ORGSH sy-vline 
WA_PIQ_COURSE_INFO_STR-ORGTX sy-vline 
WA_PIQ_COURSE_INFO_STR-EXEMPTFEE sy-vline 
WA_PIQ_COURSE_INFO_STR-NHOURS sy-vline 
WA_PIQ_COURSE_INFO_STR-CATEGORY sy-vline 
WA_PIQ_COURSE_INFO_STR-METHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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