ABAP Select data from SAP table WSALMSCCUSW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSALMSCCUSW
*  INTO TABLE @DATA(IT_WSALMSCCUSW2).
*--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_WSALMSCCUSW INDEX 1 INTO DATA(WA_WSALMSCCUSW2).


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

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

ENDLOOP.

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

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


*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_WSALMSCCUSW_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,
RAISE_VALUE TYPE STRING,
RAISE_SEVERITY TYPE STRING,
MSC_VAL_MODE TYPE STRING,
MSC_VAL_MODE_TIME_SPAN TYPE STRING,
MAX_ALERTS_PER_ID TYPE STRING,
KEEP_LINES_TYP TYPE STRING,
KEEP_LINES_MAX TYPE STRING,
ATTR_GROUP_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSALMSCCUSW_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_WSALMSCCUSW_STR-CONTROLLER sy-vline 
WA_WSALMSCCUSW_STR-TID sy-vline 
WA_WSALMSCCUSW_STR-CONTROLLER sy-vline 
WA_WSALMSCCUSW_STR-MTSYSID sy-vline 
WA_WSALMSCCUSW_STR-MTMCNAME sy-vline 
WA_WSALMSCCUSW_STR-MTNUMRANGE sy-vline 
WA_WSALMSCCUSW_STR-MTUID sy-vline 
WA_WSALMSCCUSW_STR-MTCLASS sy-vline 
WA_WSALMSCCUSW_STR-MTINDEX sy-vline 
WA_WSALMSCCUSW_STR-EXTINDEX sy-vline 
WA_WSALMSCCUSW_STR-CUST_STATUS sy-vline 
WA_WSALMSCCUSW_STR-RAISE_VALUE sy-vline 
WA_WSALMSCCUSW_STR-RAISE_SEVERITY sy-vline 
WA_WSALMSCCUSW_STR-MSC_VAL_MODE sy-vline 
WA_WSALMSCCUSW_STR-MSC_VAL_MODE_TIME_SPAN sy-vline 
WA_WSALMSCCUSW_STR-MAX_ALERTS_PER_ID sy-vline 
WA_WSALMSCCUSW_STR-KEEP_LINES_TYP sy-vline 
WA_WSALMSCCUSW_STR-KEEP_LINES_MAX sy-vline 
WA_WSALMSCCUSW_STR-ATTR_GROUP_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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