sql server - Convert DATETIME to 8 digit INT in format YYYYMMDD SQL -


need join 2 tables. 1 table has 'datekey' column int in format yyyymmdd dimdate table, , other table has 'createdon' column datetime. casting datetime date because way group seems work correctly. keep getting error "operand type clash: date incompatible int" because of "on d.datekey = bbb.datekey" line.. suggestions on easy workaround?

select      distinct convert (date,convert(char(8),d.datekey )) date     , isnull(bbb.reccount,0) dimaccount dimdate d left outer join(     select          cast(createdon date) datekey         , count(*) reccount     dimaccount      group cast(createdon date) )bbb on d.datekey = bbb.datekey d.datekey '2017%' group d.datekey ,bbb.reccount having max(datediff(dd, convert(date, cast(d.datekey  char(8)), 101), getdate())) > -1 order date desc

something should started

from dimdate dd join dimaccount da  on cast(da.createdon date) = cast(cast(dd.datekey char(8)) date)  dd.year = 2017  -- or can filter on da.createdon >= '20170101'

in fact, if dimdate table has actual date column wouldn't have cast datekey @ all.


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