ABAP Select data from SAP table WSALPERFCUSW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSALPERFCUSW
*  INTO TABLE @DATA(IT_WSALPERFCUSW2).
*--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_WSALPERFCUSW INDEX 1 INTO DATA(WA_WSALPERFCUSW2).


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

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

ENDLOOP.

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

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


*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_WSALPERFCUSW_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,
RELEVANT_VALUE_TYP TYPE STRING,
THRESHOLD_DIRECTION TYPE STRING,
THRESHOLD_G2Y TYPE STRING,
THRESHOLD_Y2R TYPE STRING,
THRESHOLD_Y2G TYPE STRING,
THRESHOLD_R2Y TYPE STRING,
MSG_CLASS TYPE STRING,
MSG_ID TYPE STRING,
ATTR_GROUP_NAME TYPE STRING,
NEW_CUST_STATUS TYPE STRING,
UNIT TYPE STRING,
DECIMALS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSALPERFCUSW_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_WSALPERFCUSW_STR-CONTROLLER sy-vline 
WA_WSALPERFCUSW_STR-TID sy-vline 
WA_WSALPERFCUSW_STR-CONTROLLER sy-vline 
WA_WSALPERFCUSW_STR-MTSYSID sy-vline 
WA_WSALPERFCUSW_STR-MTMCNAME sy-vline 
WA_WSALPERFCUSW_STR-MTNUMRANGE sy-vline 
WA_WSALPERFCUSW_STR-MTUID sy-vline 
WA_WSALPERFCUSW_STR-MTCLASS sy-vline 
WA_WSALPERFCUSW_STR-MTINDEX sy-vline 
WA_WSALPERFCUSW_STR-EXTINDEX sy-vline 
WA_WSALPERFCUSW_STR-RELEVANT_VALUE_TYP sy-vline 
WA_WSALPERFCUSW_STR-THRESHOLD_DIRECTION sy-vline 
WA_WSALPERFCUSW_STR-THRESHOLD_G2Y sy-vline 
WA_WSALPERFCUSW_STR-THRESHOLD_Y2R sy-vline 
WA_WSALPERFCUSW_STR-THRESHOLD_Y2G sy-vline 
WA_WSALPERFCUSW_STR-THRESHOLD_R2Y sy-vline 
WA_WSALPERFCUSW_STR-MSG_CLASS sy-vline 
WA_WSALPERFCUSW_STR-MSG_ID sy-vline 
WA_WSALPERFCUSW_STR-ATTR_GROUP_NAME sy-vline 
WA_WSALPERFCUSW_STR-NEW_CUST_STATUS sy-vline 
WA_WSALPERFCUSW_STR-UNIT sy-vline 
WA_WSALPERFCUSW_STR-DECIMALS sy-vline      INTO ld_text SEPARATED BY SPACE.

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