ABAP Select data from SAP table PIQEDCOURSE_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQEDCOURSE_D
*  INTO TABLE @DATA(IT_PIQEDCOURSE_D2).
*--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_PIQEDCOURSE_D INDEX 1 INTO DATA(WA_PIQEDCOURSE_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQEDCOURSE_D>-ISSEO_SU = 1.
<PIQEDCOURSE_D>-ISSEOT_SU = 1.
<PIQEDCOURSE_D>-TRANS_GUID_SU = 1.
<PIQEDCOURSE_D>-TRTYPE_SU = 1.
<PIQEDCOURSE_D>-TRTYPET_SU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQEDCOURSE_D-COURSEID, sy-vline,
  WA_PIQEDCOURSE_D-COURSESHORT, sy-vline,
  WA_PIQEDCOURSE_D-COURSESTEXT, sy-vline,
  WA_PIQEDCOURSE_D-EXTGRADE, sy-vline,
  WA_PIQEDCOURSE_D-EXTGRADETEXT, sy-vline,
  WA_PIQEDCOURSE_D-EXTGRADENORM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQEDCOURSE_D 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_PIQEDCOURSE_D 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_PIQEDCOURSE_D INTO WA_PIQEDCOURSE_D.


*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_PIQEDCOURSE_D-EXTCOCREDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQEDCOURSE_D-EXTCOCREDTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field INTCOCREDTYPE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQEDCOURSE_D-INTCOCREDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQEDCOURSE_D-INTCOCREDTYPE.
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_PIQEDCOURSE_D_STR, 
ISSEO_SU TYPE STRING,
ISSEOT_SU TYPE STRING,
TRANS_GUID_SU TYPE STRING,
TRTYPE_SU TYPE STRING,
TRTYPET_SU TYPE STRING,
COURSEID TYPE STRING,
COURSESHORT TYPE STRING,
COURSESTEXT TYPE STRING,
EXTGRADE TYPE STRING,
EXTGRADETEXT TYPE STRING,
EXTGRADENORM TYPE STRING,
EXTGRADESCALE TYPE STRING,
GRADEMANFLAG TYPE STRING,
INTGRADE TYPE STRING,
INTGRADETEXT TYPE STRING,
INTGRADENORM TYPE STRING,
INTGRADESCALE TYPE STRING,
COREPEATFLAG TYPE STRING,
HONORSINDIC TYPE STRING,
EXTCOATMCRED TYPE STRING,
EXTCOGRDCRED TYPE STRING,
EXTCOERNCRED TYPE STRING,
EXTCOCREDTYPE TYPE STRING,
COCREDMANFLAG TYPE STRING,
INTCOATMCRED TYPE STRING,
INTCOGRDCRED TYPE STRING,
INTCOERNCRED TYPE STRING,
INTCOCREDTYPE TYPE STRING,
BASFORCOCRED TYPE STRING,
COREFLAG TYPE STRING,
COWITHDRDATE TYPE STRING,
COSESID TYPE STRING,
COSESYEAR TYPE STRING,
COBEGDATE TYPE STRING,
COENDDATE TYPE STRING,
MARK TYPE STRING,
ATTNO_TW TYPE STRING,
INTSCALET TYPE STRING,
INTCPUNITT TYPE STRING,
EXTSCALET TYPE STRING,
EXTCPUNITT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQEDCOURSE_D_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_PIQEDCOURSE_D_STR-ISSEO_SU sy-vline 
WA_PIQEDCOURSE_D_STR-ISSEOT_SU sy-vline 
WA_PIQEDCOURSE_D_STR-TRANS_GUID_SU sy-vline 
WA_PIQEDCOURSE_D_STR-TRTYPE_SU sy-vline 
WA_PIQEDCOURSE_D_STR-TRTYPET_SU sy-vline 
WA_PIQEDCOURSE_D_STR-COURSEID sy-vline 
WA_PIQEDCOURSE_D_STR-COURSESHORT sy-vline 
WA_PIQEDCOURSE_D_STR-COURSESTEXT sy-vline 
WA_PIQEDCOURSE_D_STR-EXTGRADE sy-vline 
WA_PIQEDCOURSE_D_STR-EXTGRADETEXT sy-vline 
WA_PIQEDCOURSE_D_STR-EXTGRADENORM sy-vline 
WA_PIQEDCOURSE_D_STR-EXTGRADESCALE sy-vline 
WA_PIQEDCOURSE_D_STR-GRADEMANFLAG sy-vline 
WA_PIQEDCOURSE_D_STR-INTGRADE sy-vline 
WA_PIQEDCOURSE_D_STR-INTGRADETEXT sy-vline 
WA_PIQEDCOURSE_D_STR-INTGRADENORM sy-vline 
WA_PIQEDCOURSE_D_STR-INTGRADESCALE sy-vline 
WA_PIQEDCOURSE_D_STR-COREPEATFLAG sy-vline 
WA_PIQEDCOURSE_D_STR-HONORSINDIC sy-vline 
WA_PIQEDCOURSE_D_STR-EXTCOATMCRED sy-vline 
WA_PIQEDCOURSE_D_STR-EXTCOGRDCRED sy-vline 
WA_PIQEDCOURSE_D_STR-EXTCOERNCRED sy-vline 
WA_PIQEDCOURSE_D_STR-EXTCOCREDTYPE sy-vline 
WA_PIQEDCOURSE_D_STR-COCREDMANFLAG sy-vline 
WA_PIQEDCOURSE_D_STR-INTCOATMCRED sy-vline 
WA_PIQEDCOURSE_D_STR-INTCOGRDCRED sy-vline 
WA_PIQEDCOURSE_D_STR-INTCOERNCRED sy-vline 
WA_PIQEDCOURSE_D_STR-INTCOCREDTYPE sy-vline 
WA_PIQEDCOURSE_D_STR-BASFORCOCRED sy-vline 
WA_PIQEDCOURSE_D_STR-COREFLAG sy-vline 
WA_PIQEDCOURSE_D_STR-COWITHDRDATE sy-vline 
WA_PIQEDCOURSE_D_STR-COSESID sy-vline 
WA_PIQEDCOURSE_D_STR-COSESYEAR sy-vline 
WA_PIQEDCOURSE_D_STR-COBEGDATE sy-vline 
WA_PIQEDCOURSE_D_STR-COENDDATE sy-vline 
WA_PIQEDCOURSE_D_STR-MARK sy-vline 
WA_PIQEDCOURSE_D_STR-ATTNO_TW sy-vline 
WA_PIQEDCOURSE_D_STR-INTSCALET sy-vline 
WA_PIQEDCOURSE_D_STR-INTCPUNITT sy-vline 
WA_PIQEDCOURSE_D_STR-EXTSCALET sy-vline 
WA_PIQEDCOURSE_D_STR-EXTCPUNITT sy-vline      INTO ld_text SEPARATED BY SPACE.

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