> ## Documentation Index
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> quantileExact, quantileExactLow, quantileExactHigh, quantileExactExclusive, quantileExactInclusive functions

# quantileExact Functions

<h2 id="quantileExact">
  quantileExact
</h2>

Introduced in: v1.1.0

Exactly computes the [quantile](https://en.wikipedia.org/wiki/Quantile) of a numeric data sequence.

To get exact value, all the passed values are combined into an array, which is then partially sorted.
Therefore, the function consumes `O(n)` memory, where `n` is a number of values that were passed.
However, for a small number of values, the function is very effective.

When using multiple `quantile*` functions with different levels in a query, the internal states are not combined (that is, the query works less efficiently than it could).
In this case, use the [`quantiles`](/reference/functions/aggregate-functions/quantiles#quantiles) function.

**Syntax**

```sql theme={null}
quantileExact(level)(expr)
```

**Aliases**: `medianExact`

**Parameters**

* `level` — Optional. Level of quantile. Constant floating-point number from 0 to 1. We recommend using a `level` value in the range of `[0.01, 0.99]`. Default value: 0.5. At `level=0.5` the function calculates median. [`Float*`](/reference/data-types/float)

**Arguments**

* `expr` — Expression over the column values resulting in numeric data types, Date or DateTime. [`(U)Int*`](/reference/data-types/int-uint) or [`Float*`](/reference/data-types/float) or [`Decimal*`](/reference/data-types/decimal) or [`Date`](/reference/data-types/date) or [`DateTime`](/reference/data-types/datetime)

**Returned value**

Quantile of the specified level. For numeric data types the output format will be the same as the input format. [`(U)Int*`](/reference/data-types/int-uint) or [`Float*`](/reference/data-types/float) or [`Decimal*`](/reference/data-types/decimal) or [`Date`](/reference/data-types/date) or [`DateTime`](/reference/data-types/datetime)

**Examples**

**Computing exact quantile**

```sql title=Query theme={null}
SELECT quantileExact(number) FROM numbers(10);
```

```response title=Response theme={null}
┌─quantileExact(number)─┐
│                     5 │
└───────────────────────┘
```

**See Also**

* [median](/reference/functions/aggregate-functions/median)
* [quantiles](/reference/functions/aggregate-functions/quantiles)