how should i cgange sql query postgresql?


i have sql query, operative good seer mssql. i'm perplexing postgresql gives uncanny exception: org.postgresql.util.psqlexception: error: missing from-clause entry for table "main"



here query: 



select *
from "main" main
     middle join "something_link" something_link main."id" = something_link."mainid"
     middle join "something" somehting something_link."somethingid" = something."id"
     middle join "type" form something."typeid" = type."id"


this definitely rudimentary query i can't since operative windows xp sp2, postgresql 8.3?



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