Merge pull request #20181 from olgarev/revolg-DOCSUP-4920-MongoDB_engine

DOCSUP-4920: Documented MongoDB engine

docs/en/engines/table-engines/integrations/index.md

@@ -12,6 +12,9 @@ List of supported integrations:
 -   [ODBC](../../../engines/table-engines/integrations/odbc.md)
 -   [JDBC](../../../engines/table-engines/integrations/jdbc.md)
 -   [MySQL](../../../engines/table-engines/integrations/mysql.md)
+-   [MongoDB](../../../engines/table-engines/integrations/mongodb.md)
 -   [HDFS](../../../engines/table-engines/integrations/hdfs.md)
 -   [S3](../../../engines/table-engines/integrations/s3.md)
 -   [Kafka](../../../engines/table-engines/integrations/kafka.md)
+-   [EmbeddedRocksDB](../../../engines/table-engines/integrations/embedded-rocksdb.md)
+-   [RabbitMQ](../../../engines/table-engines/integrations/rabbitmq.md)

docs/en/engines/table-engines/integrations/mongodb.md

@@ -0,0 +1,57 @@
+---
+toc_priority: 7
+toc_title: MongoDB
+---
+
+# MongoDB {#mongodb}
+
+MongoDB engine is read-only table engine which allows to read data (`SELECT` queries) from remote MongoDB collection. Engine supports only non-nested data types. `INSERT` queries are not supported.
+
+## Creating a Table {#creating-a-table}
+
+``` sql
+CREATE TABLE [IF NOT EXISTS] [db.]table_name
+(
+    name1 [type1],
+    name2 [type2],
+    ...
+) ENGINE = MongoDB(host:port, database, collection, user, password);
+```
+
+**Engine Parameters**
+
+-   `host:port` — MongoDB server address.
+
+-   `database` — Remote database name.
+
+-   `collection` — Remote collection name.
+
+-   `user` — MongoDB user.
+
+-   `password` — User password.
+
+## Usage Example {#usage-example}
+
+Table in ClickHouse which allows to read data from MongoDB collection:
+
+``` text
+CREATE TABLE mongo_table
+(
+    key UInt64, 
+    data String
+) ENGINE = MongoDB('mongo1:27017', 'test', 'simple_table', 'testuser', 'clickhouse');
+```
+
+Query:
+
+``` sql
+SELECT COUNT() FROM mongo_table;
+```
+
+``` text
+┌─count()─┐
+│       4 │
+└─────────┘
+```
+
+[Original article](https://clickhouse.tech/docs/en/operations/table_engines/integrations/mongodb/) <!--hide-->

docs/ru/engines/table-engines/integrations/index.md

@@ -12,7 +12,10 @@ toc_priority: 30
 -   [ODBC](../../../engines/table-engines/integrations/odbc.md)
 -   [JDBC](../../../engines/table-engines/integrations/jdbc.md)
 -   [MySQL](../../../engines/table-engines/integrations/mysql.md)
+-   [MongoDB](../../../engines/table-engines/integrations/mongodb.md)
 -   [HDFS](../../../engines/table-engines/integrations/hdfs.md)
 -   [Kafka](../../../engines/table-engines/integrations/kafka.md)
+-   [EmbeddedRocksDB](../../../engines/table-engines/integrations/embedded-rocksdb.md)
+-   [RabbitMQ](../../../engines/table-engines/integrations/rabbitmq.md)
 
 [Оригинальная статья](https://clickhouse.tech/docs/ru/engines/table-engines/integrations/) <!--hide-->

docs/ru/engines/table-engines/integrations/mongodb.md

@@ -0,0 +1,57 @@
+---
+toc_priority: 7
+toc_title: MongoDB
+---
+
+# MongoDB {#mongodb}
+
+Движок таблиц MongoDB позволяет читать данные из коллекций СУБД MongoDB. В таблицах допустимы только плоские (не вложенные) типы данных. Запись (`INSERT`-запросы) не поддерживается.
+
+## Создание таблицы {#creating-a-table}
+
+``` sql
+CREATE TABLE [IF NOT EXISTS] [db.]table_name
+(
+    name1 [type1],
+    name2 [type2],
+    ...
+) ENGINE = MongoDB(host:port, database, collection, user, password);
+```
+
+**Параметры движка**
+
+-   `host:port` — адрес сервера MongoDB.
+
+-   `database` — имя базы данных на удалённом сервере.
+
+-   `collection` — имя коллекции на удалённом сервере.
+
+-   `user` — пользователь MongoDB.
+
+-   `password` — пароль пользователя.
+
+## Примеры использования {#usage-example}
+
+Таблица в ClickHouse для чтения данных из колекции MongoDB:
+
+``` text
+CREATE TABLE mongo_table
+(
+    key UInt64, 
+    data String
+) ENGINE = MongoDB('mongo1:27017', 'test', 'simple_table', 'testuser', 'clickhouse');
+```
+
+Запрос к таблице:
+
+``` sql
+SELECT COUNT() FROM mongo_table;
+```
+
+``` text
+┌─count()─┐
+│       4 │
+└─────────┘
+```
+
+[Original article](https://clickhouse.tech/docs/ru/operations/table_engines/integrations/mongodb/) <!--hide-->