mysql - Creating a self-reflexive cross join -


hi i'm looking see if there alternative syntax following self-reflexive cross-join. objective sort of row-filler table - dates should have entries every cdn. using mysql

select    d.labeldate,    n.cdn,   networks.sites (   select      distinct labeldate         cdn_trend ) d cross join (   select      distinct cdn    cdn_trend ) n left join cdn_trend networks    on  networks.labeldate = d.labeldate   , networks.cdn = n.cdn     order    labeldate,    cdn

i've tried recasting cross-join using simple aliases gives me column errors in join. possible or should consider using views instead?

as cross join should return cartesian product of 2 tables should same selecting both without join. however, following raises "unknown column d.labeldate in on clause" exception

select distinct d.labeldate, n.cdn, networks.sites  cdn_trend d, cdn_trend n left join cdn_trend networks on (n.labeldate = networks.labeldate , d.cdn = networks.cdn) order labeldate, cdn

error code: 1054. unknown column 'd.cdn' in 'on clause'

because length of dand n relatively small size of query fast enough.

i think close in original intent... every date, want results of every network node status. if list multiple tables in clause without join condition, default create cartesian... that, join detail table...

select        d.labeldate,        n.cdn,       networks.sites           ( select d.labeldate, n.cdn                           ( select distinct labeldate                     cdn_trend ) d,               ( select distinct cdn                     cdn_trend ) n ) crossresults          left join cdn_trend networks           on  crossresults.labeldate = networks.labeldate          , crossresults.cdn = networks.cdn    order        networks.labeldate,        networks.cdn

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