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docs/en/engines/table-engines/special/url.md
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@ -9,28 +9,24 @@ Queries data to/from a remote HTTP/HTTPS server. This engine is similar to the [
Syntax: `URL(URL [,Format] [,CompressionMethod])`
- The `URL` parameter must conform to the structure of a Uniform Resource Locator. The specified URL must point to a server
that uses HTTP or HTTPS. This does not require any
additional headers for getting a response from the server.
- The `URL` parameter must conform to the structure of a Uniform Resource Locator. The specified URL must point to a server that uses HTTP or HTTPS. This does not require any additional headers for getting a response from the server.
- The `Format` must be one that ClickHouse can use in
`SELECT` queries and, if necessary, in `INSERTs`. For the full list of supported formats, see
[Formats](../../../interfaces/formats.md#formats).
- The `Format` must be one that ClickHouse can use in `SELECT` queries and, if necessary, in `INSERTs`. For the full list of supported formats, see [Formats](../../../interfaces/formats.md#formats).
- `CompressionMethod` indicates that whether the HTTP body should be compressed. If the compression is enabled, the HTTP packets sent by the URL engine contain 'Content-Encoding' header to indicate which compression method is used.
To enable compression, please first make sure the remote HTTP endpoint indicated by the `URL` parameter supports corresponding compression algorithm.
To enable compression, please first make sure the remote HTTP endpoint indicated by the `URL` parameter supports corresponding compression algorithm.
The supported `CompressionMethod` should be one of following
- gzip or gz
- deflate
- brotli or br
- lzma or xz
- zstd or zst
- lz4
- bz2
- snappy
- none
The supported `CompressionMethod` should be one of following:
- gzip or gz
- deflate
- brotli or br
- lzma or xz
- zstd or zst
- lz4
- bz2
- snappy
- none
## Usage {#using-the-engine-in-the-clickhouse-server}