*** 4,9 **** --- 4,11 ---- ---- + *: The EXISTS keyword is not supported (IN is, but IN is only a special case of EXISTS). And what about corelated subqueries ? + *: Multiple databases are not supported. For example, the following construct for creating a table in a database db1 based on a table in database db2 won't work: create table db1.table1 as select * from db2.table1;