Snowflake specific subadapter

lib/odbc_adapter/adapters/snowflake_odbc_adapter.rb

@@ -0,0 +1,31 @@
+module ODBCAdapter
+  module Adapters
+    # A default adapter used for databases that are no explicitly listed in the
+    # registry. This allows for minimal support for DBMSs for which we don't
+    # have an explicit adapter.
+    class SnowflakeODBCAdapter < ActiveRecord::ConnectionAdapters::ODBCAdapter
+      PRIMARY_KEY = 'INT PRIMARY KEY NOT NULL AUTOINCREMENT'.freeze
+      VARIANT_TYPE = 'VARIANT'.freeze
+      DATE_TYPE = 'DATE'.freeze
+      JSON_TYPE = 'JSON'.freeze
+      # Using a BindVisitor so that the SQL string gets substituted before it is
+      # sent to the DBMS (to attempt to get as much coverage as possible for
+      # DBMSs we don't support).
+      def arel_visitor
+        Arel::Visitors::PostgreSQL.new(self)
+      end
+
+      # Explicitly turning off prepared_statements in the null adapter because
+      # there isn't really a standard on which substitution character to use.
+      def prepared_statements
+        false
+      end
+
+      # Turning off support for migrations because there is no information to
+      # go off of for what syntax the DBMS will expect.
+      def supports_migrations?
+        false
+      end
+    end
+  end
+end

lib/odbc_adapter/registry.rb

@@ -4,8 +4,9 @@ class Registry
 
     def initialize
       @dbs = {
-        /my.*sql/i  => :MySQL,
-        /postgres/i => :PostgreSQL
+        /my.*sql/i   => :MySQL,
+        /postgres/i  => :PostgreSQL,
+        /snowflake/i => :Snowflake,
       }
     end