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67 lines
3.5 KiB
Markdown
67 lines
3.5 KiB
Markdown
---
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toc_priority: 14
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toc_title: Playground
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---
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# ClickHouse Playground {#clickhouse-playground}
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[ClickHouse Playground](https://play.clickhouse.com) allows people to experiment with ClickHouse by running queries instantly, without setting up their server or cluster.
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Several example datasets are available in Playground as well as sample queries that show ClickHouse features. There’s also a selection of ClickHouse LTS releases to experiment with.
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ClickHouse Playground gives the experience of m2.small [Managed Service for ClickHouse](https://cloud.yandex.com/services/managed-clickhouse) instance (4 vCPU, 32 GB RAM) hosted in [Yandex.Cloud](https://cloud.yandex.com/). More information about [cloud providers](../commercial/cloud.md).
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You can make queries to Playground using any HTTP client, for example [curl](https://curl.haxx.se) or [wget](https://www.gnu.org/software/wget/), or set up a connection using [JDBC](../interfaces/jdbc.md) or [ODBC](../interfaces/odbc.md) drivers. More information about software products that support ClickHouse is available [here](../interfaces/index.md).
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## Credentials {#credentials}
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| Parameter | Value |
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|:--------------------|:----------------------------------------|
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| HTTPS endpoint | `https://play-api.clickhouse.com:8443` |
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| Native TCP endpoint | `play-api.clickhouse.com:9440` |
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| User | `playground` |
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| Password | `clickhouse` |
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There are additional endpoints with specific ClickHouse releases to experiment with their differences (ports and user/password are the same as above):
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- 20.3 LTS: `play-api-v20-3.clickhouse.com`
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- 19.14 LTS: `play-api-v19-14.clickhouse.com`
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!!! note "Note"
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All these endpoints require a secure TLS connection.
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## Limitations {#limitations}
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The queries are executed as a read-only user. It implies some limitations:
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- DDL queries are not allowed
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- INSERT queries are not allowed
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The following settings are also enforced:
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- [max_result_bytes=10485760](../operations/settings/query-complexity/#max-result-bytes)
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- [max_result_rows=2000](../operations/settings/query-complexity/#setting-max_result_rows)
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- [result_overflow_mode=break](../operations/settings/query-complexity/#result-overflow-mode)
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- [max_execution_time=60000](../operations/settings/query-complexity/#max-execution-time)
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## Examples {#examples}
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HTTPS endpoint example with `curl`:
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``` bash
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curl "https://play-api.clickhouse.com:8443/?query=SELECT+'Play+ClickHouse\!';&user=playground&password=clickhouse&database=datasets"
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```
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TCP endpoint example with [CLI](../interfaces/cli.md):
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``` bash
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clickhouse client --secure -h play-api.clickhouse.com --port 9440 -u playground --password clickhouse -q "SELECT 'Play ClickHouse\!'"
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```
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## Implementation Details {#implementation-details}
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ClickHouse Playground web interface makes requests via ClickHouse [HTTP API](../interfaces/http.md).
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The Playground backend is just a ClickHouse cluster without any additional server-side application. As mentioned above, ClickHouse HTTPS and TCP/TLS endpoints are also publicly available as a part of the Playground, both are proxied through [Cloudflare Spectrum](https://www.cloudflare.com/products/cloudflare-spectrum/) to add an extra layer of protection and improved global connectivity.
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!!! warning "Warning"
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Exposing the ClickHouse server to the public internet in any other situation is **strongly not recommended**. Make sure it listens only on a private network and is covered by a properly configured firewall.
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