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43 lines
911 B
Markdown
43 lines
911 B
Markdown
---
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toc_priority: 109
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---
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# topKWeighted {#topkweighted}
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Similar to `topK` but takes one additional argument of integer type - `weight`. Every value is accounted `weight` times for frequency calculation.
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**Syntax**
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``` sql
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topKWeighted(N)(x, weight)
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```
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**Arguments**
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- `N` — The number of elements to return.
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**Arguments**
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- `x` — The value.
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- `weight` — The weight. [UInt8](../../../sql-reference/data-types/int-uint.md).
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**Returned value**
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Returns an array of the values with maximum approximate sum of weights.
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**Example**
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Query:
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``` sql
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SELECT topKWeighted(10)(number, number) FROM numbers(1000)
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```
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Result:
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``` text
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┌─topKWeighted(10)(number, number)──────────┐
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│ [999,998,997,996,995,994,993,992,991,990] │
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└───────────────────────────────────────────┘
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```
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