Add MemGQL v0.2.0 docs pages

pages/preview/memgql/changelog.mdx

@@ -5,6 +5,11 @@ description: MemGQL release notes
 
 # MemGQL Changelog
 
+## MemGQL v0.2.0
+
+- Added Clickhouse connector
+- MCP server
+
 ## MemGQL v0.1.0 - March 29th, 2026
 
 - GQL parser with ISO/IEC 39075 standard support including quantified path patterns

pages/preview/memgql/config.mdx

@@ -36,6 +36,7 @@ connections.
 | `neo4j-gql`    | GQL -> Cypher      | Neo4j                            |
 | `postgres`     | GQL -> SQL         | PostgreSQL                       |
 | `duckdb`       | GQL -> SQL         | DuckDB (embedded)                |
+| `clickhouse`   | GQL -> SQL         | ClickHouse                       |
 | `iceberg`      | GQL -> SQL         | Iceberg via Trino                |
 | `multi`        | Per-connector      | Multiple backends simultaneously |
 
@@ -71,6 +72,16 @@ connections.
 | `DUCKDB_PATH`  | `:memory:`                      | Path to DuckDB file       |
 | `MAPPING_FILE` | _(none, uses built-in default)_ | Path to JSON mapping file |
 
+## ClickHouse (`clickhouse`)
+
+| Variable          | Default                   | Description               |
+|-------------------|---------------------------|---------------------------|
+| `CLICKHOUSE_URL`  | `http://localhost:8123`   | ClickHouse HTTP API URL   |
+| `CLICKHOUSE_USER` | `default`                 | ClickHouse user           |
+| `CLICKHOUSE_PASS` | _(none)_                  | ClickHouse password       |
+| `CLICKHOUSE_DB`   | `default`                 | ClickHouse database       |
+| `MAPPING_FILE`    | _(none, uses built-in default)_ | Path to JSON mapping file |
+
 ## Iceberg (`iceberg`)
 
 | Variable        | Default                 | Description               |

pages/preview/memgql/connect/clickhouse.mdx

@@ -0,0 +1,98 @@
+---
+title: ClickHouse
+description: Connect MemGQL to ClickHouse.
+---
+
+# ClickHouse
+
+The ClickHouse connector (`CONNECTOR_TYPE=clickhouse`) translates GQL queries
+into ClickHouse-dialect SQL and executes them via the ClickHouse HTTP interface.
+It requires a [mapping file](../quick-start.mdx#mapping-file) that maps graph
+patterns to ClickHouse tables.
+
+## 1. Start ClickHouse
+
+```bash
+docker network create memgql-net
+
+docker run -d --rm \
+    --name clickhouse-dev \
+    --network memgql-net \
+    -p 9000:9000 \
+    -p 8123:8123 \
+    --ulimit nofile=262144:262144 \
+    -e CLICKHOUSE_DEFAULT_ACCESS_MANAGEMENT=1 \
+    -e CLICKHOUSE_PASSWORD="" \
+    clickhouse/clickhouse-server:latest
+```
+
+## 2. Seed data
+
+```bash
+docker exec -i clickhouse-dev clickhouse-client << 'SQL'
+CREATE TABLE IF NOT EXISTS persons (
+    id UInt32,
+    name String,
+    age UInt32
+) ENGINE = MergeTree() ORDER BY id;
+
+CREATE TABLE IF NOT EXISTS companies (
+    id UInt32,
+    name String
+) ENGINE = MergeTree() ORDER BY id;
+
+CREATE TABLE IF NOT EXISTS knows (
+    from_id UInt32,
+    to_id UInt32
+) ENGINE = MergeTree() ORDER BY (from_id, to_id);
+
+CREATE TABLE IF NOT EXISTS works_at (
+    person_id UInt32,
+    company_id UInt32
+) ENGINE = MergeTree() ORDER BY (person_id, company_id);
+
+INSERT INTO persons VALUES (1, 'Alice', 30), (2, 'Bob', 25);
+INSERT INTO companies VALUES (1, 'Acme Corp');
+INSERT INTO knows VALUES (1, 2);
+INSERT INTO works_at VALUES (1, 1);
+SQL
+```
+
+## 3. Start MemGQL
+
+```bash
+docker run --rm \
+    --name memgql \
+    --network memgql-net \
+    --stop-timeout 2 \
+    -p 7688:7688 \
+    --env CONNECTOR_TYPE=clickhouse \
+    --env CLICKHOUSE_URL=http://clickhouse-dev:8123 \
+    --env CLICKHOUSE_DB=default \
+    --env MAPPING_FILE=/data/mapping.json \
+    --env BOLT_LISTEN_ADDR=0.0.0.0:7688 \
+    -v ./mapping.json:/data/mapping.json \
+    memgraph/memgql:latest
+```
+
+## 4. Connect
+
+```bash
+mgconsole --port 7688
+```
+
+## 5. Query
+
+```gql
+MATCH (p:Person) RETURN p.name, p.age;
+```
+
+```gql
+MATCH (p:Person)-[:WORKS_AT]->(c:Company) RETURN p.name, c.name;
+```
+
+```gql
+MATCH (a:Person)-[:KNOWS]->(b:Person) RETURN a.name, b.name;
+```
+
+For environment variables, see [Configuration](../config.mdx#clickhouse-clickhouse).

pages/preview/memgql/features.mdx

@@ -16,6 +16,7 @@ description: MemGQL Community and Enterprise feature comparison.
 | [PostgreSQL](/preview/memgql/connect/postgres)   | Yes       | Yes                                           |
 | [DuckDB](/preview/memgql/connect/duckdb)         | Yes       | Yes                                           |
 | [Iceberg](/preview/memgql/connect/iceberg)       | Yes       | Yes                                           |
+| [ClickHouse](/preview/memgql/connect/clickhouse) | Yes       | Yes                                           |
 | **Multi-Connection Mode**                        | Yes       | Yes                                           |
 | Max connectors                                   | 4         | Unlimited                                     |
 | Max simultaneous connections                     | 4         | Unlimited                                     |