ABAP Select data from SAP table SXMSMSGDEF_SM30 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SXMSMSGDEF_SM30 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 SXMSMSGDEF_SM30. 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 SXMSMSGDEF_SM30 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_SXMSMSGDEF_SM30 TYPE STANDARD TABLE OF SXMSMSGDEF_SM30,
      WA_SXMSMSGDEF_SM30 TYPE SXMSMSGDEF_SM30,
      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: <SXMSMSGDEF_SM30> TYPE SXMSMSGDEF_SM30.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SXMSMSGDEF_SM30.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SXMSMSGDEF_SM30
  INTO TABLE IT_SXMSMSGDEF_SM30.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SXMSMSGDEF_SM30
*  INTO TABLE @DATA(IT_SXMSMSGDEF_SM302).
*--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_SXMSMSGDEF_SM30 INDEX 1 INTO DATA(WA_SXMSMSGDEF_SM302).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SXMSMSGDEF_SM30 ASSIGNING <SXMSMSGDEF_SM30>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SXMSMSGDEF_SM30>-CLIENT = 1.
<SXMSMSGDEF_SM30>-GUID = 1.
<SXMSMSGDEF_SM30>-LOCATION = 1.
<SXMSMSGDEF_SM30>-SENDER = 1.
<SXMSMSGDEF_SM30>-RECEIVER = 1.

ENDLOOP.

LOOP AT IT_SXMSMSGDEF_SM30 INTO WA_SXMSMSGDEF_SM30.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SXMSMSGDEF_SM30-QUEUE, sy-vline,
  WA_SXMSMSGDEF_SM30-JOB_ID, sy-vline,
  WA_SXMSMSGDEF_SM30-PREFIX, sy-vline,
  WA_SXMSMSGDEF_SM30-MSGTYPE, sy-vline,
  WA_SXMSMSGDEF_SM30-SIZECAT, sy-vline,
  WA_SXMSMSGDEF_SM30-MSGSIZE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SXMSMSGDEF_SM30 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_SXMSMSGDEF_SM30 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_SXMSMSGDEF_SM30 INTO WA_SXMSMSGDEF_SM30.


*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_SXMSMSGDEF_SM30_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
LOCATION TYPE STRING,
SENDER TYPE STRING,
RECEIVER TYPE STRING,
QUEUE TYPE STRING,
JOB_ID TYPE STRING,
PREFIX TYPE STRING,
MSGTYPE TYPE STRING,
SIZECAT TYPE STRING,
MSGSIZE TYPE STRING,
SEQUENCE TYPE STRING,
STATUS TYPE STRING,
MAXPACKSIZE TYPE STRING,
STARTATONCE TYPE STRING,
EO_QUEUE TYPE STRING,
DESCR TYPE STRING,
CREATEDBY TYPE STRING,
CREATEDDATE TYPE STRING,
CREATEDTIME TYPE STRING,
MODIFIEDBY TYPE STRING,
MODIFYDATE TYPE STRING,
MODIFYTIME TYPE STRING,
VIM_ACTION TYPE STRING,
VIM_MARK TYPE STRING,
VIM_TXTACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SXMSMSGDEF_SM30_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_SXMSMSGDEF_SM30_STR-CLIENT sy-vline 
WA_SXMSMSGDEF_SM30_STR-GUID sy-vline 
WA_SXMSMSGDEF_SM30_STR-LOCATION sy-vline 
WA_SXMSMSGDEF_SM30_STR-SENDER sy-vline 
WA_SXMSMSGDEF_SM30_STR-RECEIVER sy-vline 
WA_SXMSMSGDEF_SM30_STR-QUEUE sy-vline 
WA_SXMSMSGDEF_SM30_STR-JOB_ID sy-vline 
WA_SXMSMSGDEF_SM30_STR-PREFIX sy-vline 
WA_SXMSMSGDEF_SM30_STR-MSGTYPE sy-vline 
WA_SXMSMSGDEF_SM30_STR-SIZECAT sy-vline 
WA_SXMSMSGDEF_SM30_STR-MSGSIZE sy-vline 
WA_SXMSMSGDEF_SM30_STR-SEQUENCE sy-vline 
WA_SXMSMSGDEF_SM30_STR-STATUS sy-vline 
WA_SXMSMSGDEF_SM30_STR-MAXPACKSIZE sy-vline 
WA_SXMSMSGDEF_SM30_STR-STARTATONCE sy-vline 
WA_SXMSMSGDEF_SM30_STR-EO_QUEUE sy-vline 
WA_SXMSMSGDEF_SM30_STR-DESCR sy-vline 
WA_SXMSMSGDEF_SM30_STR-CREATEDBY sy-vline 
WA_SXMSMSGDEF_SM30_STR-CREATEDDATE sy-vline 
WA_SXMSMSGDEF_SM30_STR-CREATEDTIME sy-vline 
WA_SXMSMSGDEF_SM30_STR-MODIFIEDBY sy-vline 
WA_SXMSMSGDEF_SM30_STR-MODIFYDATE sy-vline 
WA_SXMSMSGDEF_SM30_STR-MODIFYTIME sy-vline 
WA_SXMSMSGDEF_SM30_STR-VIM_ACTION sy-vline 
WA_SXMSMSGDEF_SM30_STR-VIM_MARK sy-vline 
WA_SXMSMSGDEF_SM30_STR-VIM_TXTACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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