ABAP Select data from SAP table /SYCLO/SYSTATS01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SYCLO/SYSTATS01 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 /SYCLO/SYSTATS01. 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 /SYCLO/SYSTATS01 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_/SYCLO/SYSTATS01 TYPE STANDARD TABLE OF /SYCLO/SYSTATS01,
      WA_/SYCLO/SYSTATS01 TYPE /SYCLO/SYSTATS01,
      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: </SYCLO/SYSTATS01> TYPE /SYCLO/SYSTATS01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SYCLO/SYSTATS01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SYCLO/SYSTATS01
  INTO TABLE IT_/SYCLO/SYSTATS01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SYCLO/SYSTATS01
*  INTO TABLE @DATA(IT_/SYCLO/SYSTATS012).
*--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_/SYCLO/SYSTATS01 INDEX 1 INTO DATA(WA_/SYCLO/SYSTATS012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SYCLO/SYSTATS01 ASSIGNING </SYCLO/SYSTATS01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SYCLO/SYSTATS01>-MANDT = 1.
</SYCLO/SYSTATS01>-RECORD_GUID = 1.
</SYCLO/SYSTATS01>-STATS_CATEGORY = 1.
</SYCLO/SYSTATS01>-CHAR_NAME = 1.
</SYCLO/SYSTATS01>-CHAR_VALUE = 1.

ENDLOOP.

LOOP AT IT_/SYCLO/SYSTATS01 INTO WA_/SYCLO/SYSTATS01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SYCLO/SYSTATS01-KPI_NAME, sy-vline,
  WA_/SYCLO/SYSTATS01-STATS_DATE, sy-vline,
  WA_/SYCLO/SYSTATS01-VALUE_DAY_TOTAL, sy-vline,
  WA_/SYCLO/SYSTATS01-VALUE_01HR, sy-vline,
  WA_/SYCLO/SYSTATS01-VALUE_02HR, sy-vline,
  WA_/SYCLO/SYSTATS01-VALUE_03HR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SYCLO/SYSTATS01 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_/SYCLO/SYSTATS01 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_/SYCLO/SYSTATS01 INTO WA_/SYCLO/SYSTATS01.


*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_/SYCLO/SYSTATS01_STR, 
MANDT TYPE STRING,
RECORD_GUID TYPE STRING,
STATS_CATEGORY TYPE STRING,
CHAR_NAME TYPE STRING,
CHAR_VALUE TYPE STRING,
KPI_NAME TYPE STRING,
STATS_DATE TYPE STRING,
VALUE_DAY_TOTAL TYPE STRING,
VALUE_01HR TYPE STRING,
VALUE_02HR TYPE STRING,
VALUE_03HR TYPE STRING,
VALUE_04HR TYPE STRING,
VALUE_05HR TYPE STRING,
VALUE_06HR TYPE STRING,
VALUE_07HR TYPE STRING,
VALUE_08HR TYPE STRING,
VALUE_09HR TYPE STRING,
VALUE_10HR TYPE STRING,
VALUE_11HR TYPE STRING,
VALUE_12HR TYPE STRING,
VALUE_13HR TYPE STRING,
VALUE_14HR TYPE STRING,
VALUE_15HR TYPE STRING,
VALUE_16HR TYPE STRING,
VALUE_17HR TYPE STRING,
VALUE_18HR TYPE STRING,
VALUE_19HR TYPE STRING,
VALUE_20HR TYPE STRING,
VALUE_21HR TYPE STRING,
VALUE_22HR TYPE STRING,
VALUE_23HR TYPE STRING,
VALUE_24HR TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_TS TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SYCLO/SYSTATS01_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_/SYCLO/SYSTATS01_STR-MANDT sy-vline 
WA_/SYCLO/SYSTATS01_STR-RECORD_GUID sy-vline 
WA_/SYCLO/SYSTATS01_STR-STATS_CATEGORY sy-vline 
WA_/SYCLO/SYSTATS01_STR-CHAR_NAME sy-vline 
WA_/SYCLO/SYSTATS01_STR-CHAR_VALUE sy-vline 
WA_/SYCLO/SYSTATS01_STR-KPI_NAME sy-vline 
WA_/SYCLO/SYSTATS01_STR-STATS_DATE sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_DAY_TOTAL sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_01HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_02HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_03HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_04HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_05HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_06HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_07HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_08HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_09HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_10HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_11HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_12HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_13HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_14HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_15HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_16HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_17HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_18HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_19HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_20HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_21HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_22HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_23HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-VALUE_24HR sy-vline 
WA_/SYCLO/SYSTATS01_STR-CREATED_BY sy-vline 
WA_/SYCLO/SYSTATS01_STR-CREATED_TS sy-vline 
WA_/SYCLO/SYSTATS01_STR-CHANGED_BY sy-vline 
WA_/SYCLO/SYSTATS01_STR-CHANGED_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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