Trace level 2 and above
 
 
- Trace level 2 shows calls with parameters and more:
    -> connect for DBD::ODBC::dr (DBI::dr=HASH(0x13dfec)~0xe14a4
                                  '' '' **** HASH(0xe0a10))
    <- connect= DBI::db=HASH(0xe0ab0) at DBI.pm line 356.
    -> STORE for DBD::ODBC::db (DBI::db=HASH(0xe0abc)~INNER 'PrintError' 1)
    <- STORE= 1 at DBI.pm line 382.
    -> prepare for DBD::ODBC::db (DBI::db=HASH(0xe0ab0)~0xe0abc
                                  'UPDATE prices SET price=? WHERE prod_id=?')
    <- prepare= DBI::st=HASH(0xe1274) at test.pl line 7.
- Trace level 3 and above shows more processing details