mysql - Find number of users count in a day who visit the url -

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i need query fetch 'number of different users count' in day visit url. structure of table enter image description here

and try query 

select distinct `userid`,`url`, from_unixtime(`time`,'%y-%m-%d') date,count(`userid`) usercount `mdl_log` group from_unixtime(`time`,'%y-%m-%d')

but not work. please me correct query.

use disinct , count together

select count(distinct `userid`) usercount,`url`, from_unixtime(`time`,'%y-%m-%d') date `mdl_log` group from_unixtime(`time`,'%y-%m-%d')

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