Remove unnecessary encode/decode before querying.
Remove unnecessary encode/decode before querying.

lzedl/PyMySQL,anson-tang/PyMySQL,MartinThoma/PyMySQL,pymysql/pymysql,methane/PyMySQL,mosquito/Tornado-MySQL,jheld/PyMySQL,aio-libs/aiomysql,DashaChuk/PyMySQL,nju520/PyMySQL,wraziens/PyMySQL,modulexcite/PyMySQL,Ting-y/PyMySQL,xjzhou/PyMySQL,Geoion/Tornado-MySQL,NunoEdgarGub1/PyMySQL,xjzhou/PyMySQL,lzedl/PyMySQL,jwjohns/PyMySQL,yeyinzhu3211/PyMySQL,pulsar314/Tornado-MySQL,eibanez/PyMySQL,PyMySQL/PyMySQL,yeyinzhu3211/PyMySQL,wraziens/PyMySQL,boneyao/PyMySQL,eibanez/PyMySQL,PyMySQL/Tornado-MySQL