thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-26 09:32:01 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #33754 from yohannj/fix_doc_tupleHammingDistance

Browse Source 
fix/doc: update output type of tupleHammingDistance
This commit is contained in:
Maksim Kita 2022-01-19 16:22:34 +01:00 committed by GitHub
commit 6e3287038e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
docs/en/sql-reference/functions/tuple-functions.md
View File

@ -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**