'Return information about unique constraints in `table_name`.
Given a string `table_name` and an optional string `schema`, return
unique constraint information as a list of dicts with these keys:
name
the unique constraint\'s name
column_names
list of column names in order
:param table_name: string name of the table.  For special quoting,
use :class:`.quoted_name`.
:param schema: string schema name; if omitted, uses the default schema
of the database connection.  For special quoting,
use :class:`.quoted_name`.
.. versionadded:: 0.8.4'

def get_unique_constraints(self, table_name, schema=None, **kw):

    return self.dialect.get_unique_constraints(self.bind, table_name, schema, info_cache=self.info_cache, **kw)
