mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-29 05:00:47 +00:00
39 lines
1.4 KiB
Markdown
39 lines
1.4 KiB
Markdown
---
|
|
toc_title: INTO OUTFILE
|
|
---
|
|
|
|
# INTO OUTFILE Clause {#into-outfile-clause}
|
|
|
|
`INTO OUTFILE` clause redirects the result of a `SELECT` query to a file on the **client** side.
|
|
|
|
Compressed files are supported. Compression type is detected by the extension of the file name (mode `'auto'` is used by default). Or it can be explicitly specified in a `COMPRESSION` clause.
|
|
|
|
**Syntax**
|
|
|
|
```sql
|
|
SELECT <expr_list> INTO OUTFILE file_name [COMPRESSION type]
|
|
```
|
|
|
|
`file_name` and `type` are string literals. Supported compression types are: `'none'`, `'gzip'`, `'deflate'`, `'br'`, `'xz'`, `'zstd'`, `'lz4'`, `'bz2'`.
|
|
|
|
## Implementation Details {#implementation-details}
|
|
|
|
- This functionality is available in the [command-line client](../../../interfaces/cli.md) and [clickhouse-local](../../../operations/utilities/clickhouse-local.md). Thus a query sent via [HTTP interface](../../../interfaces/http.md) will fail.
|
|
- The query will fail if a file with the same file name already exists.
|
|
- The default [output format](../../../interfaces/formats.md) is `TabSeparated` (like in the command-line client batch mode). Use [FORMAT](format.md) clause to change it.
|
|
|
|
**Example**
|
|
|
|
Execute the following query using [command-line client](../../../interfaces/cli.md):
|
|
|
|
```bash
|
|
clickhouse-client --query="SELECT 1,'ABC' INTO OUTFILE 'select.gz' FORMAT CSV;"
|
|
zcat select.gz
|
|
```
|
|
|
|
Result:
|
|
|
|
```text
|
|
1,"ABC"
|
|
```
|