ABAP Select data from SAP table WSALPERFTYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSALPERFTYPE
*  INTO TABLE @DATA(IT_WSALPERFTYPE2).
*--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_WSALPERFTYPE INDEX 1 INTO DATA(WA_WSALPERFTYPE2).


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

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

ENDLOOP.

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

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


*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_WSALPERFTYPE_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,
PERF_CUSTOMIZING TYPE STRING,
CONTROLLER TYPE STRING,
CUST_STATUS TYPE STRING,
RELEVANT_VALUE_TYP TYPE STRING,
THRESHOLD_DIRECTION TYPE STRING,
THRESHOLD_STATUS TYPE STRING,
ACTIVE_THRESHOLD_G2Y TYPE STRING,
ACTIVE_THRESHOLD_Y2R TYPE STRING,
ACTIVE_THRESHOLD_Y2G TYPE STRING,
ACTIVE_THRESHOLD_R2Y TYPE STRING,
DEFAULT_THRESHOLD_G2Y TYPE STRING,
DEFAULT_THRESHOLD_Y2R TYPE STRING,
DEFAULT_THRESHOLD_Y2G TYPE STRING,
DEFAULT_THRESHOLD_R2Y TYPE STRING,
MSG_CLASS TYPE STRING,
MSG_ID TYPE STRING,
ATTR_GROUP_NAME TYPE STRING,
UNIT TYPE STRING,
DECIMALS TYPE STRING,
PERF_VALUE TYPE STRING,
CONTROLLER TYPE STRING,
PERF_TOTAL_HIGH TYPE STRING,
PERF_TOTAL_LOW TYPE STRING,
PERF_COUNT_HIGH TYPE STRING,
PERF_COUNT_LOW TYPE STRING,
ALERT_RELEVANT_VALUE TYPE STRING,
ALERT_RELEVANT_DATE TYPE STRING,
ALERT_RELEVANT_TIME TYPE STRING,
LAST_ALERT_STATUS TYPE STRING,
LAST_PERF_VALUE TYPE STRING,
AVG00PERF_VALUE TYPE STRING,
AVG01PERF_VALUE TYPE STRING,
AVG05PERF_VALUE TYPE STRING,
AVG15PERF_VALUE TYPE STRING,
AVG01SUM_VALUE TYPE STRING,
AVG05SUM_VALUE TYPE STRING,
AVG15SUM_VALUE TYPE STRING,
AVG01COUNT_VALUE TYPE STRING,
AVG05COUNT_VALUE TYPE STRING,
AVG15COUNT_VALUE TYPE STRING,
MAX_PERF_VALUE_SEEN TYPE STRING,
MAX_PERF_VALUE_DATE TYPE STRING,
MAX_PERF_VALUE_TIME TYPE STRING,
MIN_PERF_VALUE_SEEN TYPE STRING,
MIN_PERF_VALUE_DATE TYPE STRING,
MIN_PERF_VALUE_TIME TYPE STRING,
RC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSALPERFTYPE_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_WSALPERFTYPE_STR-CONTROLLER sy-vline 
WA_WSALPERFTYPE_STR-TID sy-vline 
WA_WSALPERFTYPE_STR-CONTROLLER sy-vline 
WA_WSALPERFTYPE_STR-MTSYSID sy-vline 
WA_WSALPERFTYPE_STR-MTMCNAME sy-vline 
WA_WSALPERFTYPE_STR-MTNUMRANGE sy-vline 
WA_WSALPERFTYPE_STR-MTUID sy-vline 
WA_WSALPERFTYPE_STR-MTCLASS sy-vline 
WA_WSALPERFTYPE_STR-MTINDEX sy-vline 
WA_WSALPERFTYPE_STR-EXTINDEX sy-vline 
WA_WSALPERFTYPE_STR-PERF_CUSTOMIZING sy-vline 
WA_WSALPERFTYPE_STR-CONTROLLER sy-vline 
WA_WSALPERFTYPE_STR-CUST_STATUS sy-vline 
WA_WSALPERFTYPE_STR-RELEVANT_VALUE_TYP sy-vline 
WA_WSALPERFTYPE_STR-THRESHOLD_DIRECTION sy-vline 
WA_WSALPERFTYPE_STR-THRESHOLD_STATUS sy-vline 
WA_WSALPERFTYPE_STR-ACTIVE_THRESHOLD_G2Y sy-vline 
WA_WSALPERFTYPE_STR-ACTIVE_THRESHOLD_Y2R sy-vline 
WA_WSALPERFTYPE_STR-ACTIVE_THRESHOLD_Y2G sy-vline 
WA_WSALPERFTYPE_STR-ACTIVE_THRESHOLD_R2Y sy-vline 
WA_WSALPERFTYPE_STR-DEFAULT_THRESHOLD_G2Y sy-vline 
WA_WSALPERFTYPE_STR-DEFAULT_THRESHOLD_Y2R sy-vline 
WA_WSALPERFTYPE_STR-DEFAULT_THRESHOLD_Y2G sy-vline 
WA_WSALPERFTYPE_STR-DEFAULT_THRESHOLD_R2Y sy-vline 
WA_WSALPERFTYPE_STR-MSG_CLASS sy-vline 
WA_WSALPERFTYPE_STR-MSG_ID sy-vline 
WA_WSALPERFTYPE_STR-ATTR_GROUP_NAME sy-vline 
WA_WSALPERFTYPE_STR-UNIT sy-vline 
WA_WSALPERFTYPE_STR-DECIMALS sy-vline 
WA_WSALPERFTYPE_STR-PERF_VALUE sy-vline 
WA_WSALPERFTYPE_STR-CONTROLLER sy-vline 
WA_WSALPERFTYPE_STR-PERF_TOTAL_HIGH sy-vline 
WA_WSALPERFTYPE_STR-PERF_TOTAL_LOW sy-vline 
WA_WSALPERFTYPE_STR-PERF_COUNT_HIGH sy-vline 
WA_WSALPERFTYPE_STR-PERF_COUNT_LOW sy-vline 
WA_WSALPERFTYPE_STR-ALERT_RELEVANT_VALUE sy-vline 
WA_WSALPERFTYPE_STR-ALERT_RELEVANT_DATE sy-vline 
WA_WSALPERFTYPE_STR-ALERT_RELEVANT_TIME sy-vline 
WA_WSALPERFTYPE_STR-LAST_ALERT_STATUS sy-vline 
WA_WSALPERFTYPE_STR-LAST_PERF_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG00PERF_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG01PERF_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG05PERF_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG15PERF_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG01SUM_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG05SUM_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG15SUM_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG01COUNT_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG05COUNT_VALUE sy-vline 
WA_WSALPERFTYPE_STR-AVG15COUNT_VALUE sy-vline 
WA_WSALPERFTYPE_STR-MAX_PERF_VALUE_SEEN sy-vline 
WA_WSALPERFTYPE_STR-MAX_PERF_VALUE_DATE sy-vline 
WA_WSALPERFTYPE_STR-MAX_PERF_VALUE_TIME sy-vline 
WA_WSALPERFTYPE_STR-MIN_PERF_VALUE_SEEN sy-vline 
WA_WSALPERFTYPE_STR-MIN_PERF_VALUE_DATE sy-vline 
WA_WSALPERFTYPE_STR-MIN_PERF_VALUE_TIME sy-vline 
WA_WSALPERFTYPE_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.