ABAP Select data from SAP table /SYCLO/SYSLOG001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SYCLO/SYSLOG001 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/SYSLOG001. 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/SYSLOG001 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/SYSLOG001 TYPE STANDARD TABLE OF /SYCLO/SYSLOG001,
      WA_/SYCLO/SYSLOG001 TYPE /SYCLO/SYSLOG001,
      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/SYSLOG001> TYPE /SYCLO/SYSLOG001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SYCLO/SYSLOG001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SYCLO/SYSLOG001
  INTO TABLE IT_/SYCLO/SYSLOG001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SYCLO/SYSLOG001
*  INTO TABLE @DATA(IT_/SYCLO/SYSLOG0012).
*--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/SYSLOG001 INDEX 1 INTO DATA(WA_/SYCLO/SYSLOG0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SYCLO/SYSLOG001 ASSIGNING </SYCLO/SYSLOG001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SYCLO/SYSLOG001>-MANDT = 1.
</SYCLO/SYSLOG001>-STATISTIC_GUID = 1.
</SYCLO/SYSLOG001>-RECORD_ID = 1.
</SYCLO/SYSLOG001>-BAPI_NAME = 1.
</SYCLO/SYSLOG001>-DO_ID = 1.

ENDLOOP.

LOOP AT IT_/SYCLO/SYSLOG001 INTO WA_/SYCLO/SYSLOG001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SYCLO/SYSLOG001-DO_HANDLER, sy-vline,
  WA_/SYCLO/SYSLOG001-MOBILE_APP, sy-vline,
  WA_/SYCLO/SYSLOG001-USER_GUID, sy-vline,
  WA_/SYCLO/SYSLOG001-SESSION_GUID, sy-vline,
  WA_/SYCLO/SYSLOG001-FLAG_INIT_SYNC, sy-vline,
  WA_/SYCLO/SYSLOG001-FLAG_GET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SYCLO/SYSLOG001 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/SYSLOG001 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/SYSLOG001 INTO WA_/SYCLO/SYSLOG001.


*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/SYSLOG001_STR, 
MANDT TYPE STRING,
STATISTIC_GUID TYPE STRING,
RECORD_ID TYPE STRING,
BAPI_NAME TYPE STRING,
DO_ID TYPE STRING,
DO_HANDLER TYPE STRING,
MOBILE_APP TYPE STRING,
USER_GUID TYPE STRING,
SESSION_GUID TYPE STRING,
FLAG_INIT_SYNC TYPE STRING,
FLAG_GET TYPE STRING,
FLAG_CRT TYPE STRING,
FLAG_DEL TYPE STRING,
FLAG_UPD TYPE STRING,
FLAG_SESS_CLOSE TYPE STRING,
FLAG_SESS_OPEN TYPE STRING,
FLAG_MDW_CALL TYPE STRING,
FLAG_ERROR TYPE STRING,
FLAG_LOGIN TYPE STRING,
FLAG_LOGOUT TYPE STRING,
FLAG_SYSTEM_CALL TYPE STRING,
BAPI_START_TS TYPE STRING,
BAPI_END_TS TYPE STRING,
MDO_START_TS TYPE STRING,
MDO_END_TS TYPE STRING,
TS_FROM_MOBILE TYPE STRING,
RUNTIME_MSEC TYPE STRING,
DESCRIPTION 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/SYSLOG001_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/SYSLOG001_STR-MANDT sy-vline 
WA_/SYCLO/SYSLOG001_STR-STATISTIC_GUID sy-vline 
WA_/SYCLO/SYSLOG001_STR-RECORD_ID sy-vline 
WA_/SYCLO/SYSLOG001_STR-BAPI_NAME sy-vline 
WA_/SYCLO/SYSLOG001_STR-DO_ID sy-vline 
WA_/SYCLO/SYSLOG001_STR-DO_HANDLER sy-vline 
WA_/SYCLO/SYSLOG001_STR-MOBILE_APP sy-vline 
WA_/SYCLO/SYSLOG001_STR-USER_GUID sy-vline 
WA_/SYCLO/SYSLOG001_STR-SESSION_GUID sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_INIT_SYNC sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_GET sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_CRT sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_DEL sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_UPD sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_SESS_CLOSE sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_SESS_OPEN sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_MDW_CALL sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_ERROR sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_LOGIN sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_LOGOUT sy-vline 
WA_/SYCLO/SYSLOG001_STR-FLAG_SYSTEM_CALL sy-vline 
WA_/SYCLO/SYSLOG001_STR-BAPI_START_TS sy-vline 
WA_/SYCLO/SYSLOG001_STR-BAPI_END_TS sy-vline 
WA_/SYCLO/SYSLOG001_STR-MDO_START_TS sy-vline 
WA_/SYCLO/SYSLOG001_STR-MDO_END_TS sy-vline 
WA_/SYCLO/SYSLOG001_STR-TS_FROM_MOBILE sy-vline 
WA_/SYCLO/SYSLOG001_STR-RUNTIME_MSEC sy-vline 
WA_/SYCLO/SYSLOG001_STR-DESCRIPTION sy-vline 
WA_/SYCLO/SYSLOG001_STR-CREATED_BY sy-vline 
WA_/SYCLO/SYSLOG001_STR-CREATED_TS sy-vline 
WA_/SYCLO/SYSLOG001_STR-CHANGED_BY sy-vline 
WA_/SYCLO/SYSLOG001_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.