MySql特性发展过程

Foreign keys 3.23 (for the InnoDB storage engine)
Unions 4.0
Subqueries 4.1
R-trees 4.1 (for the MyISAM storage engine)
Stored procedures 5.0
Views 5.0
Cursors 5.0
XA transactions 5.0
Foreign keys 5.2 (implemented in 3.23 for InnoDB)
Triggers 5.0 and 5.1
Partitioning 5.1
Pluggable Storage Engine API 5.1
Row-Based Replication 5.1