ABAP Select data from SAP table RDNO_UISUB_NOTIF_TASK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDNO_UISUB_NOTIF_TASK
*  INTO TABLE @DATA(IT_RDNO_UISUB_NOTIF_TASK2).
*--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_RDNO_UISUB_NOTIF_TASK INDEX 1 INTO DATA(WA_RDNO_UISUB_NOTIF_TASK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDNO_UISUB_NOTIF_TASK>-NUMB = 1.
<RDNO_UISUB_NOTIF_TASK>-REFNUM = 1.
<RDNO_UISUB_NOTIF_TASK>-TYPE_NOTIF = 1.
<RDNO_UISUB_NOTIF_TASK>-CATEGORY = 1.
<RDNO_UISUB_NOTIF_TASK>-SUBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDNO_UISUB_NOTIF_TASK-PRIORITY, sy-vline,
  WA_RDNO_UISUB_NOTIF_TASK-LANGUAGE, sy-vline,
  WA_RDNO_UISUB_NOTIF_TASK-DATE_START, sy-vline,
  WA_RDNO_UISUB_NOTIF_TASK-DATE_END, sy-vline,
  WA_RDNO_UISUB_NOTIF_TASK-DAYS_NEEDED, sy-vline,
  WA_RDNO_UISUB_NOTIF_TASK-CUSTOMER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDNO_UISUB_NOTIF_TASK 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_RDNO_UISUB_NOTIF_TASK 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_RDNO_UISUB_NOTIF_TASK INTO WA_RDNO_UISUB_NOTIF_TASK.


*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 ALPHA, internal->external for field NUMB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDNO_UISUB_NOTIF_TASK-NUMB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDNO_UISUB_NOTIF_TASK-NUMB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RDNO_UISUB_NOTIF_TASK-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDNO_UISUB_NOTIF_TASK-LANGUAGE.
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_RDNO_UISUB_NOTIF_TASK_STR, 
NUMB TYPE STRING,
REFNUM TYPE STRING,
TYPE_NOTIF TYPE STRING,
CATEGORY TYPE STRING,
SUBJECT TYPE STRING,
PRIORITY TYPE STRING,
LANGUAGE TYPE STRING,
DATE_START TYPE STRING,
DATE_END TYPE STRING,
DAYS_NEEDED TYPE STRING,
CUSTOMER TYPE STRING,
LOCATION TYPE STRING,
COUNTRY TYPE STRING,
PO_GUID TYPE STRING,
PUBLISH TYPE STRING,
PARENT TYPE STRING,
PROCESSOR TYPE STRING,
FEEDBACKDATE TYPE STRING,
STATUS TYPE STRING,
FUNCTION TYPE STRING,
SUBCATEGORY TYPE STRING,
PERCENT TYPE STRING,
ISSUBTASK TYPE STRING,
PARNR TYPE STRING,
TYPE_PAR TYPE STRING,
FUNC_PAR TYPE STRING,
PAR_ACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDNO_UISUB_NOTIF_TASK_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_RDNO_UISUB_NOTIF_TASK_STR-NUMB sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-REFNUM sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-TYPE_NOTIF sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-CATEGORY sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-SUBJECT sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PRIORITY sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-LANGUAGE sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-DATE_START sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-DATE_END sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-DAYS_NEEDED sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-CUSTOMER sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-LOCATION sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-COUNTRY sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PO_GUID sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PUBLISH sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PARENT sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PROCESSOR sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-FEEDBACKDATE sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-STATUS sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-FUNCTION sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-SUBCATEGORY sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PERCENT sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-ISSUBTASK sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PARNR sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-TYPE_PAR sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-FUNC_PAR sy-vline 
WA_RDNO_UISUB_NOTIF_TASK_STR-PAR_ACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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