ABAP Select data from SAP table EAM_NTF_MASS_GENERAL_DATA_ALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAM_NTF_MASS_GENERAL_DATA_ALL
*  INTO TABLE @DATA(IT_EAM_NTF_MASS_GENERAL_DATA_ALL2).
*--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_EAM_NTF_MASS_GENERAL_DATA_ALL INDEX 1 INTO DATA(WA_EAM_NTF_MASS_GENERAL_DATA_ALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAM_NTF_MASS_GENERAL_DATA_ALL>-REPORTEDBYUSER = 1.
<EAM_NTF_MASS_GENERAL_DATA_ALL>-NOTIFICATIONREFERENCEDATE = 1.
<EAM_NTF_MASS_GENERAL_DATA_ALL>-NOTIFICATIONREFERENCETIME = 1.
<EAM_NTF_MASS_GENERAL_DATA_ALL>-MAINTENANCEACTIVITYTYPE = 1.
<EAM_NTF_MASS_GENERAL_DATA_ALL>-MAINTNOTIFICATIONCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAM_NTF_MASS_GENERAL_DATA_ALL-MAINTNOTIFICATIONCODEGROUP, sy-vline,
  WA_EAM_NTF_MASS_GENERAL_DATA_ALL-NOTIFICATIONTEXT, sy-vline,
  WA_EAM_NTF_MASS_GENERAL_DATA_ALL-SORTFIELD, sy-vline,
  WA_EAM_NTF_MASS_GENERAL_DATA_ALL-ASSETLOCATION, sy-vline,
  WA_EAM_NTF_MASS_GENERAL_DATA_ALL-ASSETROOM, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_EAM_NTF_MASS_GENERAL_DATA_ALL 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_EAM_NTF_MASS_GENERAL_DATA_ALL 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_EAM_NTF_MASS_GENERAL_DATA_ALL INTO WA_EAM_NTF_MASS_GENERAL_DATA_ALL.


*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_EAM_NTF_MASS_GENERAL_DATA_ALL_STR, 
REPORTEDBYUSER TYPE STRING,
NOTIFICATIONREFERENCEDATE TYPE STRING,
NOTIFICATIONREFERENCETIME TYPE STRING,
MAINTENANCEACTIVITYTYPE TYPE STRING,
MAINTNOTIFICATIONCODE TYPE STRING,
MAINTNOTIFICATIONCODEGROUP TYPE STRING,
NOTIFICATIONTEXT TYPE STRING,
SORTFIELD TYPE STRING,
ASSETLOCATION TYPE STRING,
ASSETROOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAM_NTF_MASS_GENERAL_DATA_ALL_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_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-REPORTEDBYUSER sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-NOTIFICATIONREFERENCEDATE sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-NOTIFICATIONREFERENCETIME sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-MAINTENANCEACTIVITYTYPE sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-MAINTNOTIFICATIONCODE sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-MAINTNOTIFICATIONCODEGROUP sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-NOTIFICATIONTEXT sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-SORTFIELD sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-ASSETLOCATION sy-vline 
WA_EAM_NTF_MASS_GENERAL_DATA_ALL_STR-ASSETROOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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