ABAP Select data from SAP table PIQCS_REGIS_CANCEL_REREGIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCS_REGIS_CANCEL_REREGIS
*  INTO TABLE @DATA(IT_PIQCS_REGIS_CANCEL_REREGIS2).
*--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_PIQCS_REGIS_CANCEL_REREGIS INDEX 1 INTO DATA(WA_PIQCS_REGIS_CANCEL_REREGIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCS_REGIS_CANCEL_REREGIS>-CONTROLLER = 1.
<PIQCS_REGIS_CANCEL_REREGIS>-ID = 1.
<PIQCS_REGIS_CANCEL_REREGIS>-CONTROLLER = 1.
<PIQCS_REGIS_CANCEL_REREGIS>-SCHEME_AGENCY_ID = 1.
<PIQCS_REGIS_CANCEL_REREGIS>-CONTENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCS_REGIS_CANCEL_REREGIS-VALIDITY_PERIOD, sy-vline,
  WA_PIQCS_REGIS_CANCEL_REREGIS-CONTROLLER, sy-vline,
  WA_PIQCS_REGIS_CANCEL_REREGIS-START_DATE, sy-vline,
  WA_PIQCS_REGIS_CANCEL_REREGIS-END_DATE, sy-vline,
  WA_PIQCS_REGIS_CANCEL_REREGIS-DURATION, sy-vline,
  WA_PIQCS_REGIS_CANCEL_REREGIS-PRIORITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCS_REGIS_CANCEL_REREGIS 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_PIQCS_REGIS_CANCEL_REREGIS 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_PIQCS_REGIS_CANCEL_REREGIS INTO WA_PIQCS_REGIS_CANCEL_REREGIS.


*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_PIQCS_REGIS_CANCEL_REREGIS_STR, 
CONTROLLER TYPE STRING,
ID TYPE STRING,
CONTROLLER TYPE STRING,
SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
VALIDITY_PERIOD TYPE STRING,
CONTROLLER TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
DURATION TYPE STRING,
PRIORITY TYPE STRING,
ACADEMIC_PERIOD TYPE STRING,
CONTROLLER TYPE STRING,
ACADEMIC_YEAR TYPE STRING,
CONTROLLER TYPE STRING,
SCHEME_ID TYPE STRING,
SCHEME_VERSION_ID TYPE STRING,
SCHEME_AGENCY_ID TYPE STRING,
SCHEME_AGENCY_SCHEME_ID TYPE STRING,
SCHEME_AGENCY_SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
ACADEMIC_SESSION TYPE STRING,
CONTROLLER TYPE STRING,
LIST_ID TYPE STRING,
LIST_VERSION_ID TYPE STRING,
LIST_AGENCY_ID TYPE STRING,
LIST_AGENCY_SCHEME_ID TYPE STRING,
LIST_AGENCY_SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
ACADEMIC_STAGE TYPE STRING,
REGISTRATION_DATE TYPE STRING,
PARTTIME_INDICATOR TYPE STRING,
LEAVE_REASON TYPE STRING,
COMPLETED_LENGTH_OF_STUDY TYPE STRING,
CONTROLLER TYPE STRING,
VALUE TYPE STRING,
MEASURE_UNIT_CODE TYPE STRING,
CONTROLLER TYPE STRING,
LIST_ID TYPE STRING,
LIST_VERSION_ID TYPE STRING,
LIST_AGENCY_ID TYPE STRING,
LIST_AGENCY_SCHEME_ID TYPE STRING,
LIST_AGENCY_SCHEME_AGENCY_ID TYPE STRING,
CONTENT TYPE STRING,
REGISTRATION_TYPE TYPE STRING,
DEGREE_SEEKING_INDICATOR TYPE STRING,
REGISTRATION_STATUS TYPE STRING,
REGISTRATION_CLASSIFICATION TYPE STRING,
CANCEL_REASON TYPE STRING,
CANCEL_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCS_REGIS_CANCEL_REREGIS_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_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-SCHEME_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTENT sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-VALIDITY_PERIOD sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-START_DATE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-END_DATE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-DURATION sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-PRIORITY sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-ACADEMIC_PERIOD sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-ACADEMIC_YEAR sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-SCHEME_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-SCHEME_VERSION_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-SCHEME_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-SCHEME_AGENCY_SCHEME_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-SCHEME_AGENCY_SCHEME_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTENT sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-ACADEMIC_SESSION sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_VERSION_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_AGENCY_SCHEME_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_AGENCY_SCHEME_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTENT sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-ACADEMIC_STAGE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-REGISTRATION_DATE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-PARTTIME_INDICATOR sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LEAVE_REASON sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-COMPLETED_LENGTH_OF_STUDY sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-VALUE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-MEASURE_UNIT_CODE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTROLLER sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_VERSION_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_AGENCY_SCHEME_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-LIST_AGENCY_SCHEME_AGENCY_ID sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CONTENT sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-REGISTRATION_TYPE sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-DEGREE_SEEKING_INDICATOR sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-REGISTRATION_STATUS sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-REGISTRATION_CLASSIFICATION sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CANCEL_REASON sy-vline 
WA_PIQCS_REGIS_CANCEL_REREGIS_STR-CANCEL_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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