> ## Documentation Index
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> Exactly computes the quantiles of a numeric data sequence.

# quantilesExactExclusive

<h2 id="quantilesExactExclusive">
  quantilesExactExclusive
</h2>

Introduced in: v20.1.0

Exactly computes multiple [quantiles](https://en.wikipedia.org/wiki/Quantile) of a numeric data sequence at different levels simultaneously using the exclusive method.

This function is equivalent to [`quantileExactExclusive`](/reference/functions/aggregate-functions/quantileExactExclusive) but allows computing multiple quantile levels in a single pass, which is more efficient than calling individual quantile functions.

This function uses the exclusive method for calculating quantiles, as described in the [R-6 method](https://en.wikipedia.org/wiki/Quantile#Estimating_quantiles_from_a_sample).
This is equivalent to [PERCENTILE.EXC](https://support.microsoft.com/en-us/office/percentile-exc-function-bbaa7204-e9e1-4010-85bf-c31dc5dce4ba) Excel function.

To get exact values, all the passed values are combined into an array, which is then partially sorted.
The sorting algorithm's complexity is `O(N·log(N))`, where `N = std::distance(first, last)` comparisons.

**Syntax**

```sql theme={null}
quantilesExactExclusive(level1, level2, ...)(expr)
```

**Parameters**

* `level` — Levels of quantiles. Constant floating-point numbers from 0 to 1 (exclusive). We recommend using `level` values in the range of `(0.01, 0.99)`. [`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**

Array of quantiles of the specified levels in the same order as the levels were specified. [`Array(Float64)`](/reference/data-types/array)

**Examples**

**Computing multiple exact exclusive quantiles**

```sql title=Query theme={null}
CREATE TABLE num AS numbers(1000);
SELECT quantilesExactExclusive(0.25, 0.5, 0.75, 0.9, 0.95, 0.99, 0.999)(number) FROM num;
```

```response title=Response theme={null}
┌─quantilesExactExclusive(0.25, 0.5, 0.75, 0.9, 0.95, 0.99, 0.999)(number)─┐
│ [249.25,499.5,749.75,899.9,949.95,989.99,998.999]                        │
└──────────────────────────────────────────────────────────────────────────┘
```