ABAP Select data from SAP table DNOS_NOTIF_TA_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DNOS_NOTIF_TA_EXT
*  INTO TABLE @DATA(IT_DNOS_NOTIF_TA_EXT2).
*--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_DNOS_NOTIF_TA_EXT INDEX 1 INTO DATA(WA_DNOS_NOTIF_TA_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DNOS_NOTIF_TA_EXT>-DATE_START = 1.
<DNOS_NOTIF_TA_EXT>-DATE_END = 1.
<DNOS_NOTIF_TA_EXT>-DAYS_NEEDED = 1.
<DNOS_NOTIF_TA_EXT>-CUSTOMER = 1.
<DNOS_NOTIF_TA_EXT>-LOCATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DNOS_NOTIF_TA_EXT-COUNTRY, sy-vline,
  WA_DNOS_NOTIF_TA_EXT-PO_GUID, sy-vline,
  WA_DNOS_NOTIF_TA_EXT-PUBLISH, sy-vline,
  WA_DNOS_NOTIF_TA_EXT-PARENT, sy-vline,
  WA_DNOS_NOTIF_TA_EXT-PROCESSOR, sy-vline,
  WA_DNOS_NOTIF_TA_EXT-FEEDBACKDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DNOS_NOTIF_TA_EXT 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_DNOS_NOTIF_TA_EXT 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_DNOS_NOTIF_TA_EXT INTO WA_DNOS_NOTIF_TA_EXT.


*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_DNOS_NOTIF_TA_EXT_STR, 
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,END OF T_EKKO_STR.
DATA: WA_DNOS_NOTIF_TA_EXT_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_DNOS_NOTIF_TA_EXT_STR-DATE_START sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-DATE_END sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-DAYS_NEEDED sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-CUSTOMER sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-LOCATION sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-COUNTRY sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-PO_GUID sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-PUBLISH sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-PARENT sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-PROCESSOR sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-FEEDBACKDATE sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-STATUS sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-FUNCTION sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-SUBCATEGORY sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-PERCENT sy-vline 
WA_DNOS_NOTIF_TA_EXT_STR-ISSUBTASK sy-vline      INTO ld_text SEPARATED BY SPACE.

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