Added the ability to pass query restriction parameters

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## Clickhouse CHANGELOG
 
+### Version 0.1.11 (September 10, 2018)
+
+* Added the ability to pass query restriction parameters
+
 ### Version 0.1.10 (January 13, 2017)
 
 * Fixed `erubis` dependency once and for all

README.md

@@ -57,6 +57,21 @@ Clickhouse.establish_connection
 => true
 ```
 
+Establish the connection with the ClickHouse server using custom config
+
+```ruby
+config = {
+  url: 'url',
+  username: 'username',
+  password: 'password',
+  query_settings: {
+    timeout_overflow_mode: 'throw',
+    max_execution_time: 5
+  }
+}
+Clickhouse.connect(config)
+```
+
 List databases and tables.
 
 ```ruby

lib/clickhouse/connection/client.rb

@@ -47,6 +47,7 @@ def ensure_authentication
 
       def path(query)
         params = @config.select{|k, _v| k == :database}
+        params.merge!(@config[:query_settings]) if @config[:query_settings]
         params[:query] = query
         params[:output_format_write_statistics] = 1
         query_string = params.collect{|k, v| "#{k}=#{CGI.escape(v.to_s)}"}.join("&")