747b0392__5_1___Postgres_OnLine_Journal__Microsoft_SQL_Server_2008
[Feature] CROSS APPLY [MySQL 5.1] No [PostgreSQL 8.4] No but can for the most part simulate by putting set returning functions in SELECT clause. As of 8.4, all set returning functions can be used in the SELECT regardless of language it is written in. [Microsoft SQL Server 2008] 
Yes
Cross Compare of PostgreSQL 8.4, SQL Server 2008, MySQL 5.1 - Postgres OnLine Journal
Microsoft SQL Server 2008