A comma or semicolon separated list of name=value pairs to be sent as SET [SESSION] ... to the server when the driver connects.
Since Version 3.1.8 What character encoding should the driver use when dealing with strings? (defaults is to 'autodetect')
Since Version 1.1g Character set to tell the server to return results as.
Since Version 3.0.13 If set, tells the server to use this collation in SET NAMES charset COLLATE connectionCollation. Also overrides the characterEncoding with those corresponding to the character set of this collation.
Since Version 3.0.13