MYSQL alias on LEFT join table error -


can't find table declared on left join using alias. here's query:

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

i've encountered unknown column 'cmbtbl.di.symbol' in 'where clause'. how solve problem. thanks


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