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Merge pull request #33754 from yohannj/fix_doc_tupleHammingDistance

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fix/doc: update output type of tupleHammingDistance
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Maksim Kita 2022-01-19 16:22:34 +01:00 committed by GitHub
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18
docs/en/sql-reference/functions/tuple-functions.md
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@ -134,7 +134,23 @@ Tuples should have the same type of the elements.
- The Hamming distance.
Type: [UInt8](../../sql-reference/data-types/int-uint.md).
Type: The result type is calculed the same way it is for [Arithmetic functions](../../sql-reference/functions/arithmetic-functions.md), based on the number of elements in the input tuples.
``` sql
SELECT
toTypeName(tupleHammingDistance(tuple(0), tuple(0))) AS t1,
toTypeName(tupleHammingDistance((0, 0), (0, 0))) AS t2,
toTypeName(tupleHammingDistance((0, 0, 0), (0, 0, 0))) AS t3,
toTypeName(tupleHammingDistance((0, 0, 0, 0), (0, 0, 0, 0))) AS t4,
toTypeName(tupleHammingDistance((0, 0, 0, 0, 0), (0, 0, 0, 0, 0))) AS t5
```
``` text
┌─t1────┬─t2─────┬─t3─────┬─t4─────┬─t5─────┐
│ UInt8 │ UInt16 │ UInt32 │ UInt64 │ UInt64 │
└───────┴────────┴────────┴────────┴────────┘
```
**Examples**