> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sdf.com/llms.txt
> Use this file to discover all available pages before exploring further.

# T-digest Functions

## `tdigest_agg`

Composes all input values of x into a tdigest. x can be of any numeric type.

*Supported Signatures*

```sql theme={null}
function tdigest_agg(double) returns tdigest
function tdigest_agg(double, double) returns tdigest
```

[🔗 Official Documentation](https://trino.io/docs/current/functions/tdigest.html#tdigest_agg)