ABAP Select data from SAP table WSALSMSGRAWT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSALSMSGRAWT
*  INTO TABLE @DATA(IT_WSALSMSGRAWT2).
*--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_WSALSMSGRAWT INDEX 1 INTO DATA(WA_WSALSMSGRAWT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSALSMSGRAWT>-CONTROLLER = 1.
<WSALSMSGRAWT>-TID = 1.
<WSALSMSGRAWT>-CONTROLLER = 1.
<WSALSMSGRAWT>-MTSYSID = 1.
<WSALSMSGRAWT>-MTMCNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSALSMSGRAWT-MTNUMRANGE, sy-vline,
  WA_WSALSMSGRAWT-MTUID, sy-vline,
  WA_WSALSMSGRAWT-MTCLASS, sy-vline,
  WA_WSALSMSGRAWT-MTINDEX, sy-vline,
  WA_WSALSMSGRAWT-EXTINDEX, sy-vline,
  WA_WSALSMSGRAWT-CUST_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSALSMSGRAWT 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_WSALSMSGRAWT 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_WSALSMSGRAWT INTO WA_WSALSMSGRAWT.


*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_WSALSMSGRAWT_STR, 
CONTROLLER TYPE STRING,
TID TYPE STRING,
CONTROLLER TYPE STRING,
MTSYSID TYPE STRING,
MTMCNAME TYPE STRING,
MTNUMRANGE TYPE STRING,
MTUID TYPE STRING,
MTCLASS TYPE STRING,
MTINDEX TYPE STRING,
EXTINDEX TYPE STRING,
CUST_STATUS TYPE STRING,
ALERT_MODE TYPE STRING,
ALERT_SHIFT TYPE STRING,
ATTR_GROUP_NAME TYPE STRING,
MSG_VALUE TYPE STRING,
MSG_DATE TYPE STRING,
MSG_TIME TYPE STRING,
MESSAGE TYPE STRING,
CONTROLLER TYPE STRING,
MSG_CLASS TYPE STRING,
MSG_ID TYPE STRING,
MSGARG1 TYPE STRING,
ARGTYPE1 TYPE STRING,
MSGARG2 TYPE STRING,
ARGTYPE2 TYPE STRING,
MSGARG3 TYPE STRING,
ARGTYPE3 TYPE STRING,
MSGARG4 TYPE STRING,
ARGTYPE4 TYPE STRING,
MSGTEXT TYPE STRING,
RC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSALSMSGRAWT_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_WSALSMSGRAWT_STR-CONTROLLER sy-vline 
WA_WSALSMSGRAWT_STR-TID sy-vline 
WA_WSALSMSGRAWT_STR-CONTROLLER sy-vline 
WA_WSALSMSGRAWT_STR-MTSYSID sy-vline 
WA_WSALSMSGRAWT_STR-MTMCNAME sy-vline 
WA_WSALSMSGRAWT_STR-MTNUMRANGE sy-vline 
WA_WSALSMSGRAWT_STR-MTUID sy-vline 
WA_WSALSMSGRAWT_STR-MTCLASS sy-vline 
WA_WSALSMSGRAWT_STR-MTINDEX sy-vline 
WA_WSALSMSGRAWT_STR-EXTINDEX sy-vline 
WA_WSALSMSGRAWT_STR-CUST_STATUS sy-vline 
WA_WSALSMSGRAWT_STR-ALERT_MODE sy-vline 
WA_WSALSMSGRAWT_STR-ALERT_SHIFT sy-vline 
WA_WSALSMSGRAWT_STR-ATTR_GROUP_NAME sy-vline 
WA_WSALSMSGRAWT_STR-MSG_VALUE sy-vline 
WA_WSALSMSGRAWT_STR-MSG_DATE sy-vline 
WA_WSALSMSGRAWT_STR-MSG_TIME sy-vline 
WA_WSALSMSGRAWT_STR-MESSAGE sy-vline 
WA_WSALSMSGRAWT_STR-CONTROLLER sy-vline 
WA_WSALSMSGRAWT_STR-MSG_CLASS sy-vline 
WA_WSALSMSGRAWT_STR-MSG_ID sy-vline 
WA_WSALSMSGRAWT_STR-MSGARG1 sy-vline 
WA_WSALSMSGRAWT_STR-ARGTYPE1 sy-vline 
WA_WSALSMSGRAWT_STR-MSGARG2 sy-vline 
WA_WSALSMSGRAWT_STR-ARGTYPE2 sy-vline 
WA_WSALSMSGRAWT_STR-MSGARG3 sy-vline 
WA_WSALSMSGRAWT_STR-ARGTYPE3 sy-vline 
WA_WSALSMSGRAWT_STR-MSGARG4 sy-vline 
WA_WSALSMSGRAWT_STR-ARGTYPE4 sy-vline 
WA_WSALSMSGRAWT_STR-MSGTEXT sy-vline 
WA_WSALSMSGRAWT_STR-RC sy-vline      INTO ld_text SEPARATED BY SPACE.

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