ABAP Select data from SAP table /SOMO/MONITOR_LOG_MSG_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SOMO/MONITOR_LOG_MSG_DATA 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 /SOMO/MONITOR_LOG_MSG_DATA. 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 /SOMO/MONITOR_LOG_MSG_DATA 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_/SOMO/MONITOR_LOG_MSG_DATA TYPE STANDARD TABLE OF /SOMO/MONITOR_LOG_MSG_DATA,
      WA_/SOMO/MONITOR_LOG_MSG_DATA TYPE /SOMO/MONITOR_LOG_MSG_DATA,
      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: </SOMO/MONITOR_LOG_MSG_DATA> TYPE /SOMO/MONITOR_LOG_MSG_DATA.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SOMO/MONITOR_LOG_MSG_DATA
  INTO TABLE IT_/SOMO/MONITOR_LOG_MSG_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SOMO/MONITOR_LOG_MSG_DATA
*  INTO TABLE @DATA(IT_/SOMO/MONITOR_LOG_MSG_DATA2).
*--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_/SOMO/MONITOR_LOG_MSG_DATA INDEX 1 INTO DATA(WA_/SOMO/MONITOR_LOG_MSG_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SOMO/MONITOR_LOG_MSG_DATA ASSIGNING </SOMO/MONITOR_LOG_MSG_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SOMO/MONITOR_LOG_MSG_DATA>-MONID = 1.
</SOMO/MONITOR_LOG_MSG_DATA>-MONTY = 1.
</SOMO/MONITOR_LOG_MSG_DATA>-KEYOBJ1 = 1.
</SOMO/MONITOR_LOG_MSG_DATA>-KEYOBJ2 = 1.
</SOMO/MONITOR_LOG_MSG_DATA>-KEYOBJ3 = 1.

ENDLOOP.

LOOP AT IT_/SOMO/MONITOR_LOG_MSG_DATA INTO WA_/SOMO/MONITOR_LOG_MSG_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SOMO/MONITOR_LOG_MSG_DATA-MSGTY, sy-vline,
  WA_/SOMO/MONITOR_LOG_MSG_DATA-MSGID, sy-vline,
  WA_/SOMO/MONITOR_LOG_MSG_DATA-MSGNO, sy-vline,
  WA_/SOMO/MONITOR_LOG_MSG_DATA-MSGV1, sy-vline,
  WA_/SOMO/MONITOR_LOG_MSG_DATA-MSGV2, sy-vline,
  WA_/SOMO/MONITOR_LOG_MSG_DATA-MSGV3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SOMO/MONITOR_LOG_MSG_DATA 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_/SOMO/MONITOR_LOG_MSG_DATA 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_/SOMO/MONITOR_LOG_MSG_DATA INTO WA_/SOMO/MONITOR_LOG_MSG_DATA.


*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_/SOMO/MONITOR_LOG_MSG_DATA_STR, 
MONID TYPE STRING,
MONTY TYPE STRING,
KEYOBJ1 TYPE STRING,
KEYOBJ2 TYPE STRING,
KEYOBJ3 TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
CHARFIELD01 TYPE STRING,
CHARFIELD02 TYPE STRING,
CHARFIELD03 TYPE STRING,
CHARFIELD04 TYPE STRING,
CHARFIELD05 TYPE STRING,
COUNTER TYPE STRING,
TIME TYPE STRING,
DATE TYPE STRING,
PROGRAM TYPE STRING,
TCODE TYPE STRING,
OPMODE TYPE STRING,
ALERTMSG TYPE STRING,
TEXTMSG TYPE STRING,
MANDT TYPE STRING,
USER TYPE STRING,
CHGDATE TYPE STRING,
CHGTIME TYPE STRING,
ANUMYEL TYPE STRING,
ANUMRED TYPE STRING,
ANUMMINRED TYPE STRING,
ANUMMINYEL TYPE STRING,
ALERTTYPE TYPE STRING,
CHARFIELD06 TYPE STRING,
CHARFIELD07 TYPE STRING,
CHARFIELD08 TYPE STRING,
CHARFIELD09 TYPE STRING,
CHARFIELD10 TYPE STRING,
COUNTER2 TYPE STRING,
COUNTER3 TYPE STRING,
COUNTER4 TYPE STRING,
COUNTER5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SOMO/MONITOR_LOG_MSG_DATA_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_/SOMO/MONITOR_LOG_MSG_DATA_STR-MONID sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MONTY sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-KEYOBJ1 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-KEYOBJ2 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-KEYOBJ3 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGTY sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGID sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGNO sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGV1 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGV2 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGV3 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MSGV4 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD01 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD02 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD03 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD04 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD05 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-COUNTER sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-TIME sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-DATE sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-PROGRAM sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-TCODE sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-OPMODE sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-ALERTMSG sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-TEXTMSG sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-MANDT sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-USER sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHGDATE sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHGTIME sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-ANUMYEL sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-ANUMRED sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-ANUMMINRED sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-ANUMMINYEL sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-ALERTTYPE sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD06 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD07 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD08 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD09 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-CHARFIELD10 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-COUNTER2 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-COUNTER3 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-COUNTER4 sy-vline 
WA_/SOMO/MONITOR_LOG_MSG_DATA_STR-COUNTER5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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