ABAP Select data from SAP table CNOTIFITTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNOTIFITTP
*  INTO TABLE @DATA(IT_CNOTIFITTP2).
*--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_CNOTIFITTP INDEX 1 INTO DATA(WA_CNOTIFITTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNOTIFITTP>-MANDT = 1.
<CNOTIFITTP>-MAINTENANCENOTIFICATION = 1.
<CNOTIFITTP>-MAINTENANCENOTIFICATIONITEM = 1.
<CNOTIFITTP>-MAINTNOTIFICATIONITEMFOREDIT = 1.
<CNOTIFITTP>-MAINTNOTIFITEMTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNOTIFITTP-MAINTNOTIFOBJPRTCODE, sy-vline,
  WA_CNOTIFITTP-MAINTNOTIFICATIONDAMAGECODE, sy-vline,
  WA_CNOTIFITTP-MAINTNOTIFDAMAGECODECATALOG, sy-vline,
  WA_CNOTIFITTP-MAINTNOTIFDAMAGECODEGROUP, sy-vline,
  WA_CNOTIFITTP-MAINTNOTIFOBJPRTCODECATALOG, sy-vline,
  WA_CNOTIFITTP-MAINTNOTIFOBJPRTCODEGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNOTIFITTP 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_CNOTIFITTP 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_CNOTIFITTP INTO WA_CNOTIFITTP.


*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 MAINTENANCENOTIFICATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNOTIFITTP-MAINTENANCENOTIFICATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNOTIFITTP-MAINTENANCENOTIFICATION.
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_CNOTIFITTP_STR, 
MANDT TYPE STRING,
MAINTENANCENOTIFICATION TYPE STRING,
MAINTENANCENOTIFICATIONITEM TYPE STRING,
MAINTNOTIFICATIONITEMFOREDIT TYPE STRING,
MAINTNOTIFITEMTEXT TYPE STRING,
MAINTNOTIFOBJPRTCODE TYPE STRING,
MAINTNOTIFICATIONDAMAGECODE TYPE STRING,
MAINTNOTIFDAMAGECODECATALOG TYPE STRING,
MAINTNOTIFDAMAGECODEGROUP TYPE STRING,
MAINTNOTIFOBJPRTCODECATALOG TYPE STRING,
MAINTNOTIFOBJPRTCODEGROUP TYPE STRING,
ISDELETED TYPE STRING,
ISMAINTNOTIFICATIONROOTCAUSE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNOTIFITTP_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_CNOTIFITTP_STR-MANDT sy-vline 
WA_CNOTIFITTP_STR-MAINTENANCENOTIFICATION sy-vline 
WA_CNOTIFITTP_STR-MAINTENANCENOTIFICATIONITEM sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFICATIONITEMFOREDIT sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFITEMTEXT sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFOBJPRTCODE sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFICATIONDAMAGECODE sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFDAMAGECODECATALOG sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFDAMAGECODEGROUP sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFOBJPRTCODECATALOG sy-vline 
WA_CNOTIFITTP_STR-MAINTNOTIFOBJPRTCODEGROUP sy-vline 
WA_CNOTIFITTP_STR-ISDELETED sy-vline 
WA_CNOTIFITTP_STR-ISMAINTNOTIFICATIONROOTCAUSE sy-vline      INTO ld_text SEPARATED BY SPACE.

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