ABAP Select data from SAP table ALM_ME_NOTIFICATION_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALM_ME_NOTIFICATION_ITEM
*  INTO TABLE @DATA(IT_ALM_ME_NOTIFICATION_ITEM2).
*--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_ALM_ME_NOTIFICATION_ITEM INDEX 1 INTO DATA(WA_ALM_ME_NOTIFICATION_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALM_ME_NOTIFICATION_ITEM>-NOTIF_NO = 1.
<ALM_ME_NOTIFICATION_ITEM>-ITEM_KEY = 1.
<ALM_ME_NOTIFICATION_ITEM>-CREATED_BY = 1.
<ALM_ME_NOTIFICATION_ITEM>-CREATED_DATE = 1.
<ALM_ME_NOTIFICATION_ITEM>-CHANGED_BY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALM_ME_NOTIFICATION_ITEM-CHANGED_DATE, sy-vline,
  WA_ALM_ME_NOTIFICATION_ITEM-DESCRIPT, sy-vline,
  WA_ALM_ME_NOTIFICATION_ITEM-D_CAT_TYP, sy-vline,
  WA_ALM_ME_NOTIFICATION_ITEM-D_CODEGRP, sy-vline,
  WA_ALM_ME_NOTIFICATION_ITEM-D_CODE, sy-vline,
  WA_ALM_ME_NOTIFICATION_ITEM-DL_CAT_TYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALM_ME_NOTIFICATION_ITEM 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_ALM_ME_NOTIFICATION_ITEM 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_ALM_ME_NOTIFICATION_ITEM INTO WA_ALM_ME_NOTIFICATION_ITEM.


*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 NOTIF_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_NOTIFICATION_ITEM-NOTIF_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_NOTIFICATION_ITEM-NOTIF_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ASSEMBLY
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ALM_ME_NOTIFICATION_ITEM-ASSEMBLY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALM_ME_NOTIFICATION_ITEM-ASSEMBLY.
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_ALM_ME_NOTIFICATION_ITEM_STR, 
NOTIF_NO TYPE STRING,
ITEM_KEY TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_DATE TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_DATE TYPE STRING,
DESCRIPT TYPE STRING,
D_CAT_TYP TYPE STRING,
D_CODEGRP TYPE STRING,
D_CODE TYPE STRING,
DL_CAT_TYP TYPE STRING,
DL_CODEGRP TYPE STRING,
DL_CODE TYPE STRING,
ASSEMBLY TYPE STRING,
LONG_TEXT TYPE STRING,
PRILANG TYPE STRING,
POS_TIME TYPE STRING,
CHANGE_TIME TYPE STRING,
DELETE_FLAG TYPE STRING,
ITEM_SORT_NO TYPE STRING,
STXT_GRPCD TYPE STRING,
TXT_PROBCD TYPE STRING,
TXT_GRPCD TYPE STRING,
TXT_OBJPTCD TYPE STRING,
CLASSIF TYPE STRING,
CLASSIF_DESC TYPE STRING,
INTCLASSNR TYPE STRING,
TXT_PART TYPE STRING,
CLASS_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALM_ME_NOTIFICATION_ITEM_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_ALM_ME_NOTIFICATION_ITEM_STR-NOTIF_NO sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-ITEM_KEY sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CREATED_BY sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CREATED_DATE sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CHANGED_BY sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CHANGED_DATE sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-DESCRIPT sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-D_CAT_TYP sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-D_CODEGRP sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-D_CODE sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-DL_CAT_TYP sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-DL_CODEGRP sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-DL_CODE sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-ASSEMBLY sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-LONG_TEXT sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-PRILANG sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-POS_TIME sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CHANGE_TIME sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-DELETE_FLAG sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-ITEM_SORT_NO sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-STXT_GRPCD sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-TXT_PROBCD sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-TXT_GRPCD sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-TXT_OBJPTCD sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CLASSIF sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CLASSIF_DESC sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-INTCLASSNR sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-TXT_PART sy-vline 
WA_ALM_ME_NOTIFICATION_ITEM_STR-CLASS_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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