mysql - Can I use alias when inserting to values ON DUPLICATE KEY UPDATE value -


i error when using alias in on duplicate key update. 

"insert currentweekvalue (symbol,value)         select csymbol , totval          (select currentweekvalue.symbol csymbol,(currentweekvalue.value + $dayiterated.value) totval         currentweekvalue         left join $dayiterated         on currentweekvalue.symbol = $dayiterated.symbol ) sub         on duplicate key update value = values(sub.totval)";

the error unknown column 'sub.totval' in 'field list' possible use alias on values? if not there other way around?


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