innodb - mySQL subquery/join across database? -


i have result set of 33 million records.

i need remove records based on result set of 10 million records based on id.

this should take care of problem, since db1 myisam it's way slow:

 select id db1.table1 id not in (   select id   db1.table2 ) result order id

i have second database has same data innodb engine big 32 million result. possible? 1 bit out of league. any/all suggestions welcome.

 select id db2.table1 id not in (   select id   db1.table2 ) result order id

as long databases exist on same host - yes, no problem, can join on more 1 database (assuming have sufficient privileges access tables).

wouldn't easier try instead of asking here? or did miss something?


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