ABAP Select data from SAP table ABDBG_TRACE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ABDBG_TRACE
*  INTO TABLE @DATA(IT_ABDBG_TRACE2).
*--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_ABDBG_TRACE INDEX 1 INTO DATA(WA_ABDBG_TRACE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ABDBG_TRACE>-TRACETYPE = 1.
<ABDBG_TRACE>-TIMESTAMP = 1.
<ABDBG_TRACE>-LINDEX = 1.
<ABDBG_TRACE>-GUID = 1.
<ABDBG_TRACE>-CLIENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ABDBG_TRACE-TRACESUBTYPE, sy-vline,
  WA_ABDBG_TRACE-SERVER, sy-vline,
  WA_ABDBG_TRACE-CONTEXT, sy-vline,
  WA_ABDBG_TRACE-IDEUSER, sy-vline,
  WA_ABDBG_TRACE-REQUESTUSER, sy-vline,
  WA_ABDBG_TRACE-TERMINALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ABDBG_TRACE 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_ABDBG_TRACE 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_ABDBG_TRACE INTO WA_ABDBG_TRACE.


*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_ABDBG_TRACE_STR, 
TRACETYPE TYPE STRING,
TIMESTAMP TYPE STRING,
LINDEX TYPE STRING,
GUID TYPE STRING,
CLIENT TYPE STRING,
TRACESUBTYPE TYPE STRING,
SERVER TYPE STRING,
CONTEXT TYPE STRING,
IDEUSER TYPE STRING,
REQUESTUSER TYPE STRING,
TERMINALID TYPE STRING,
IDEID TYPE STRING,
EXC TYPE STRING,
DATA1 TYPE STRING,
DATA2 TYPE STRING,
DATA3 TYPE STRING,
DATA4 TYPE STRING,
DATA5 TYPE STRING,
STACK TYPE STRING,
PROCESSID TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ABDBG_TRACE_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_ABDBG_TRACE_STR-TRACETYPE sy-vline 
WA_ABDBG_TRACE_STR-TIMESTAMP sy-vline 
WA_ABDBG_TRACE_STR-LINDEX sy-vline 
WA_ABDBG_TRACE_STR-GUID sy-vline 
WA_ABDBG_TRACE_STR-CLIENT sy-vline 
WA_ABDBG_TRACE_STR-TRACESUBTYPE sy-vline 
WA_ABDBG_TRACE_STR-SERVER sy-vline 
WA_ABDBG_TRACE_STR-CONTEXT sy-vline 
WA_ABDBG_TRACE_STR-IDEUSER sy-vline 
WA_ABDBG_TRACE_STR-REQUESTUSER sy-vline 
WA_ABDBG_TRACE_STR-TERMINALID sy-vline 
WA_ABDBG_TRACE_STR-IDEID sy-vline 
WA_ABDBG_TRACE_STR-EXC sy-vline 
WA_ABDBG_TRACE_STR-DATA1 sy-vline 
WA_ABDBG_TRACE_STR-DATA2 sy-vline 
WA_ABDBG_TRACE_STR-DATA3 sy-vline 
WA_ABDBG_TRACE_STR-DATA4 sy-vline 
WA_ABDBG_TRACE_STR-DATA5 sy-vline 
WA_ABDBG_TRACE_STR-STACK sy-vline 
WA_ABDBG_TRACE_STR-PROCESSID sy-vline 
WA_ABDBG_TRACE_STR-DATUM sy-vline 
WA_ABDBG_TRACE_STR-UZEIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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