ABAP Select data from SAP table PIQ_COURSEREQUEST_SIMILAR_SM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQ_COURSEREQUEST_SIMILAR_SM 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_COURSEREQUEST_SIMILAR_SM. 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_COURSEREQUEST_SIMILAR_SM 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_COURSEREQUEST_SIMILAR_SM TYPE STANDARD TABLE OF PIQ_COURSEREQUEST_SIMILAR_SM,
      WA_PIQ_COURSEREQUEST_SIMILAR_SM TYPE PIQ_COURSEREQUEST_SIMILAR_SM,
      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_COURSEREQUEST_SIMILAR_SM> TYPE PIQ_COURSEREQUEST_SIMILAR_SM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_COURSEREQUEST_SIMILAR_SM
*  INTO TABLE @DATA(IT_PIQ_COURSEREQUEST_SIMILAR_SM2).
*--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_COURSEREQUEST_SIMILAR_SM INDEX 1 INTO DATA(WA_PIQ_COURSEREQUEST_SIMILAR_SM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_COURSEREQUEST_SIMILAR_SM>-PLVAR = 1.
<PIQ_COURSEREQUEST_SIMILAR_SM>-OTYPE = 1.
<PIQ_COURSEREQUEST_SIMILAR_SM>-OBJID = 1.
<PIQ_COURSEREQUEST_SIMILAR_SM>-SM_SHORT = 1.
<PIQ_COURSEREQUEST_SIMILAR_SM>-SM_STEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_COURSEREQUEST_SIMILAR_SM-MINCAP, sy-vline,
  WA_PIQ_COURSEREQUEST_SIMILAR_SM-OPTCAP, sy-vline,
  WA_PIQ_COURSEREQUEST_SIMILAR_SM-MAXCAP, sy-vline,
  WA_PIQ_COURSEREQUEST_SIMILAR_SM-CPMIN, sy-vline,
  WA_PIQ_COURSEREQUEST_SIMILAR_SM-CPOPT, sy-vline,
  WA_PIQ_COURSEREQUEST_SIMILAR_SM-CPMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_COURSEREQUEST_SIMILAR_SM 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_COURSEREQUEST_SIMILAR_SM 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_COURSEREQUEST_SIMILAR_SM INTO WA_PIQ_COURSEREQUEST_SIMILAR_SM.


*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 CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_COURSEREQUEST_SIMILAR_SM-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_COURSEREQUEST_SIMILAR_SM-CPUNIT.
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_COURSEREQUEST_SIMILAR_SM_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SM_SHORT TYPE STRING,
SM_STEXT TYPE STRING,
MINCAP TYPE STRING,
OPTCAP TYPE STRING,
MAXCAP TYPE STRING,
CPMIN TYPE STRING,
CPOPT TYPE STRING,
CPMAX TYPE STRING,
CPUNIT TYPE STRING,
SEVERITY TYPE STRING,
SEVERITYT TYPE STRING,
CATEGORY TYPE STRING,
CATEGORYT TYPE STRING,
MODREPEATTYPE TYPE STRING,
MODREPEATTYPET TYPE STRING,
MAIN_DISCIPLINE TYPE STRING,
MAIN_DISCIPLINET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_COURSEREQUEST_SIMILAR_SM_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_COURSEREQUEST_SIMILAR_SM_STR-PLVAR sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-OTYPE sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-OBJID sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-SM_SHORT sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-SM_STEXT sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-MINCAP sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-OPTCAP sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-MAXCAP sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-CPMIN sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-CPOPT sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-CPMAX sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-CPUNIT sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-SEVERITY sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-SEVERITYT sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-CATEGORY sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-CATEGORYT sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-MODREPEATTYPE sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-MODREPEATTYPET sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-MAIN_DISCIPLINE sy-vline 
WA_PIQ_COURSEREQUEST_SIMILAR_SM_STR-MAIN_DISCIPLINET sy-vline      INTO ld_text SEPARATED BY SPACE.

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