ABAP Select data from SAP table CEHSMNOTD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEHSMNOTD
*  INTO TABLE @DATA(IT_CEHSMNOTD2).
*--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_CEHSMNOTD INDEX 1 INTO DATA(WA_CEHSMNOTD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEHSMNOTD>-MANDT = 1.
<CEHSMNOTD>-EHSTASKDEFMAINTENANCEUUID = 1.
<CEHSMNOTD>-EHSTASKDEFINITIONUUID = 1.
<CEHSMNOTD>-TECHNICALOBJECTLABEL = 1.
<CEHSMNOTD>-TECHNICALOBJECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEHSMNOTD-TECHNICALOBJECTDESCRIPTION, sy-vline,
  WA_CEHSMNOTD-NOTIFICATIONTYPE, sy-vline,
  WA_CEHSMNOTD-EHSTASKHOSTOBJECTINSTANCE, sy-vline,
  WA_CEHSMNOTD-INCIDENTHASACCESSRESTRICTION, sy-vline,
  WA_CEHSMNOTD-EHSTASKHOSTOBJECTADAPTERCLASS, sy-vline,
  WA_CEHSMNOTD-EHSTASKOWNERUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEHSMNOTD 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_CEHSMNOTD 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_CEHSMNOTD INTO WA_CEHSMNOTD.


*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 TECHO, internal->external for field TECHNICALOBJECTLABEL
CALL FUNCTION 'CONVERSION_EXIT_TECHO_OUTPUT'
  EXPORTING
    input =                      WA_CEHSMNOTD-TECHNICALOBJECTLABEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEHSMNOTD-TECHNICALOBJECTLABEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TECHO, internal->external for field TECHNICALOBJECT
CALL FUNCTION 'CONVERSION_EXIT_TECHO_OUTPUT'
  EXPORTING
    input =                      WA_CEHSMNOTD-TECHNICALOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEHSMNOTD-TECHNICALOBJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EHSTASKOWNERUSER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CEHSMNOTD-EHSTASKOWNERUSER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEHSMNOTD-EHSTASKOWNERUSER.
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_CEHSMNOTD_STR, 
MANDT TYPE STRING,
EHSTASKDEFMAINTENANCEUUID TYPE STRING,
EHSTASKDEFINITIONUUID TYPE STRING,
TECHNICALOBJECTLABEL TYPE STRING,
TECHNICALOBJECT TYPE STRING,
TECHNICALOBJECTDESCRIPTION TYPE STRING,
NOTIFICATIONTYPE TYPE STRING,
EHSTASKHOSTOBJECTINSTANCE TYPE STRING,
INCIDENTHASACCESSRESTRICTION TYPE STRING,
EHSTASKHOSTOBJECTADAPTERCLASS TYPE STRING,
EHSTASKOWNERUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEHSMNOTD_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_CEHSMNOTD_STR-MANDT sy-vline 
WA_CEHSMNOTD_STR-EHSTASKDEFMAINTENANCEUUID sy-vline 
WA_CEHSMNOTD_STR-EHSTASKDEFINITIONUUID sy-vline 
WA_CEHSMNOTD_STR-TECHNICALOBJECTLABEL sy-vline 
WA_CEHSMNOTD_STR-TECHNICALOBJECT sy-vline 
WA_CEHSMNOTD_STR-TECHNICALOBJECTDESCRIPTION sy-vline 
WA_CEHSMNOTD_STR-NOTIFICATIONTYPE sy-vline 
WA_CEHSMNOTD_STR-EHSTASKHOSTOBJECTINSTANCE sy-vline 
WA_CEHSMNOTD_STR-INCIDENTHASACCESSRESTRICTION sy-vline 
WA_CEHSMNOTD_STR-EHSTASKHOSTOBJECTADAPTERCLASS sy-vline 
WA_CEHSMNOTD_STR-EHSTASKOWNERUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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