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WIP update-aggregate-funcions-in-zh
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@ -32,4 +32,6 @@ Arguments 参数
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`x` — 生成所[支持的数据类型](数据)的[表达式]。
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```
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3. See also 参见
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@ -90,28 +90,6 @@ uniqHLL12(x[, ...])
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- [uniqCombined](#agg_function-uniqcombined)
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- [uniqExact](#agg_function-uniqexact)
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## uniqExact {#agg_function-uniqexact}
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计算不同参数值的准确数目。
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``` sql
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uniqExact(x[, ...])
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```
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如果你绝对需要一个确切的结果,使用 `uniqExact` 功能。 否则使用 [uniq](#agg_function-uniq) 功能。
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`uniqExact` 比 `uniq` 使用更多的内存,因为状态的大小随着不同值的数量的增加而无界增长。
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**参数**
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该函数采用可变数量的参数。 参数可以是 `Tuple`, `Array`, `Date`, `DateTime`, `String`,或数字类型。
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**另请参阅**
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- [uniq](#agg_function-uniq)
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- [uniqCombined](#agg_function-uniqcombined)
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- [uniqHLL12](#agg_function-uniqhll12)
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## quantileExact {#quantileexact}
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@ -4,21 +4,22 @@ toc_priority: 191
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# uniqExact {#agg_function-uniqexact}
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Calculates the exact number of different argument values.
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计算不同参数值的准确数目。
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**语法**
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``` sql
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uniqExact(x[, ...])
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```
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如果你绝对需要一个确切的结果,使用 `uniqExact` 函数。 否则使用 [uniq](../../../sql-reference/aggregate-functions/reference/uniq.md#agg_function-uniq) 函数。
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Use the `uniqExact` function if you absolutely need an exact result. Otherwise use the [uniq](../../../sql-reference/aggregate-functions/reference/uniq.md#agg_function-uniq) function.
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`uniqExact` 函数比 `uniq` 使用更多的内存,因为状态的大小随着不同值的数量的增加而无界增长。
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The `uniqExact` function uses more memory than `uniq`, because the size of the state has unbounded growth as the number of different values increases.
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**参数**
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**Parameters**
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该函数采用可变数量的参数。 参数可以是 `Tuple`, `Array`, `Date`, `DateTime`, `String`,或数字类型。
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The function takes a variable number of parameters. Parameters can be `Tuple`, `Array`, `Date`, `DateTime`, `String`, or numeric types.
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**See Also**
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**参见**
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- [uniq](../../../sql-reference/aggregate-functions/reference/uniq.md#agg_function-uniq)
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- [uniqCombined](../../../sql-reference/aggregate-functions/reference/uniq.md#agg_function-uniqcombined)
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