mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-24 18:50:49 +00:00
7170f3c534
* prefer relative links from root * wip * split aggregate function reference * split system tables
42 lines
1.1 KiB
Markdown
42 lines
1.1 KiB
Markdown
# median {#median}
|
|
|
|
The `median*` functions are the aliases for the corresponding `quantile*` functions. They calculate median of a numeric data sample.
|
|
|
|
Functions:
|
|
|
|
- `median` — Alias for [quantile](#quantile).
|
|
- `medianDeterministic` — Alias for [quantileDeterministic](#quantiledeterministic).
|
|
- `medianExact` — Alias for [quantileExact](#quantileexact).
|
|
- `medianExactWeighted` — Alias for [quantileExactWeighted](#quantileexactweighted).
|
|
- `medianTiming` — Alias for [quantileTiming](#quantiletiming).
|
|
- `medianTimingWeighted` — Alias for [quantileTimingWeighted](#quantiletimingweighted).
|
|
- `medianTDigest` — Alias for [quantileTDigest](#quantiletdigest).
|
|
- `medianTDigestWeighted` — Alias for [quantileTDigestWeighted](#quantiletdigestweighted).
|
|
|
|
**Example**
|
|
|
|
Input table:
|
|
|
|
``` text
|
|
┌─val─┐
|
|
│ 1 │
|
|
│ 1 │
|
|
│ 2 │
|
|
│ 3 │
|
|
└─────┘
|
|
```
|
|
|
|
Query:
|
|
|
|
``` sql
|
|
SELECT medianDeterministic(val, 1) FROM t
|
|
```
|
|
|
|
Result:
|
|
|
|
``` text
|
|
┌─medianDeterministic(val, 1)─┐
|
|
│ 1.5 │
|
|
└─────────────────────────────┘
|
|
```
|