Queries to find indexes are schema queries (#1096)

Author: aidanharan

lib/active_record/connection_adapters/sqlserver/schema_statements.rb

@@ -44,7 +44,7 @@ def indexes(table_name)
             else
               name    = index[:index_name]
               unique  = index[:index_description] =~ /unique/
-              where   = select_value("SELECT [filter_definition] FROM sys.indexes WHERE name = #{quote(name)}")
+              where   = select_value("SELECT [filter_definition] FROM sys.indexes WHERE name = #{quote(name)}", "SCHEMA")
               orders  = {}
               columns = []