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docs/en/sql-reference/functions/hash-functions.md
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@ -12,7 +12,7 @@ Simhash is a hash function, which returns close hash values for close (similar)
## halfMD5 ## halfMD5
[Interprets](../../sql-reference/functions/type-conversion-functions.md#type_conversion_functions-reinterpretAsString) all the input parameters as strings and calculates the [MD5](https://en.wikipedia.org/wiki/MD5) hash value for each of them. Then combines hashes, takes the first 8 bytes of the hash of the resulting string, and interprets them as `UInt64` in big-endian byte order. [Interprets](/docs/en/sql-reference/functions/type-conversion-functions.md/#type_conversion_functions-reinterpretAsString) all the input parameters as strings and calculates the [MD5](https://en.wikipedia.org/wiki/MD5) hash value for each of them. Then combines hashes, takes the first 8 bytes of the hash of the resulting string, and interprets them as `UInt64` in big-endian byte order.
```sql ```sql
halfMD5(par1, ...) halfMD5(par1, ...)
@ -23,11 +23,11 @@ Consider using the [sipHash64](#hash_functions-siphash64) function instead.
**Arguments** **Arguments**
The function takes a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). The function takes a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
A [UInt64](../../sql-reference/data-types/int-uint.md) data type hash value. A [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
**Example** **Example**
@ -61,7 +61,7 @@ sipHash64(par1,...)
This is a cryptographic hash function. It works at least three times faster than the [MD5](#hash_functions-md5) function. This is a cryptographic hash function. It works at least three times faster than the [MD5](#hash_functions-md5) function.
Function [interprets](../../sql-reference/functions/type-conversion-functions.md#type_conversion_functions-reinterpretAsString) all the input parameters as strings and calculates the hash value for each of them. Then combines hashes by the following algorithm: Function [interprets](/docs/en/sql-reference/functions/type-conversion-functions.md/#type_conversion_functions-reinterpretAsString) all the input parameters as strings and calculates the hash value for each of them. Then combines hashes by the following algorithm:
1. After hashing all the input parameters, the function gets the array of hashes. 1. After hashing all the input parameters, the function gets the array of hashes.
2. Function takes the first and the second elements and calculates a hash for the array of them. 2. Function takes the first and the second elements and calculates a hash for the array of them.
@ -70,11 +70,11 @@ Function [interprets](../../sql-reference/functions/type-conversion-functions.md
**Arguments** **Arguments**
The function takes a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). The function takes a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
A [UInt64](../../sql-reference/data-types/int-uint.md) data type hash value. A [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
**Example** **Example**
@ -100,13 +100,13 @@ sipHash128(par1,...)
**Arguments** **Arguments**
The function takes a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). The function takes a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned value** **Returned value**
A 128-bit `SipHash` hash value. A 128-bit `SipHash` hash value.
Type: [FixedString(16)](../../sql-reference/data-types/fixedstring.md). Type: [FixedString(16)](/docs/en/sql-reference/data-types/fixedstring.md).
**Example** **Example**
@ -136,11 +136,11 @@ This is a fast non-cryptographic hash function. It uses the CityHash algorithm f
**Arguments** **Arguments**
The function takes a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). The function takes a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
A [UInt64](../../sql-reference/data-types/int-uint.md) data type hash value. A [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
**Examples** **Examples**
@ -174,7 +174,7 @@ It works faster than intHash32. Average quality.
## SHA1, SHA224, SHA256, SHA512 ## SHA1, SHA224, SHA256, SHA512
Calculates SHA-1, SHA-224, SHA-256, SHA-512 hash from a string and returns the resulting set of bytes as [FixedString](../data-types/fixedstring.md). Calculates SHA-1, SHA-224, SHA-256, SHA-512 hash from a string and returns the resulting set of bytes as [FixedString](/docs/en/sql-reference/data-types/fixedstring.md).
**Syntax** **Syntax**
@ -190,17 +190,17 @@ Even in these cases, we recommend applying the function offline and pre-calculat
**Arguments** **Arguments**
- `s` — Input string for SHA hash calculation. [String](../data-types/string.md). - `s` — Input string for SHA hash calculation. [String](/docs/en/sql-reference/data-types/string.md).
**Returned value** **Returned value**
- SHA hash as a hex-unencoded FixedString. SHA-1 returns as FixedString(20), SHA-224 as FixedString(28), SHA-256 — FixedString(32), SHA-512 — FixedString(64). - SHA hash as a hex-unencoded FixedString. SHA-1 returns as FixedString(20), SHA-224 as FixedString(28), SHA-256 — FixedString(32), SHA-512 — FixedString(64).
Type: [FixedString](../data-types/fixedstring.md). Type: [FixedString](/docs/en/sql-reference/data-types/fixedstring.md).
**Example** **Example**
Use the [hex](../functions/encoding-functions.md#hex) function to represent the result as a hex-encoded string. Use the [hex](/docs/en/sql-reference/functions/encoding-functions.md/#hex) function to represent the result as a hex-encoded string.
Query: Query:
@ -218,7 +218,7 @@ Result:
## BLAKE3 ## BLAKE3
Calculates BLAKE3 hash string and returns the resulting set of bytes as [FixedString](../data-types/fixedstring.md). Calculates BLAKE3 hash string and returns the resulting set of bytes as [FixedString](/docs/en/sql-reference/data-types/fixedstring.md).
**Syntax** **Syntax**
@ -230,17 +230,17 @@ This cryptographic hash-function is integrated into ClickHouse with BLAKE3 Rust
**Arguments** **Arguments**
- s - input string for BLAKE3 hash calculation. [String](../data-types/string.md). - s - input string for BLAKE3 hash calculation. [String](/docs/en/sql-reference/data-types/string.md).
**Return value** **Return value**
- BLAKE3 hash as a byte array with type FixedString(32). - BLAKE3 hash as a byte array with type FixedString(32).
Type: [FixedString](../data-types/fixedstring.md). Type: [FixedString](/docs/en/sql-reference/data-types/fixedstring.md).
**Example** **Example**
Use function [hex](../functions/encoding-functions.md#hex) to represent the result as a hex-encoded string. Use function [hex](/docs/en/sql-reference/functions/encoding-functions.md/#hex) to represent the result as a hex-encoded string.
Query: Query:
```sql ```sql
@ -276,11 +276,11 @@ These functions use the `Fingerprint64` and `Hash64` methods respectively from a
**Arguments** **Arguments**
The function takes a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).. The function takes a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
A [UInt64](../../sql-reference/data-types/int-uint.md) data type hash value. A [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
**Example** **Example**
@ -423,11 +423,11 @@ metroHash64(par1, ...)
**Arguments** **Arguments**
The function takes a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). The function takes a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
A [UInt64](../../sql-reference/data-types/int-uint.md) data type hash value. A [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
**Example** **Example**
@ -458,12 +458,12 @@ murmurHash2_64(par1, ...)
**Arguments** **Arguments**
Both functions take a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). Both functions take a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
- The `murmurHash2_32` function returns hash value having the [UInt32](../../sql-reference/data-types/int-uint.md) data type. - The `murmurHash2_32` function returns hash value having the [UInt32](/docs/en/sql-reference/data-types/int-uint.md) data type.
- The `murmurHash2_64` function returns hash value having the [UInt64](../../sql-reference/data-types/int-uint.md) data type. - The `murmurHash2_64` function returns hash value having the [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type.
**Example** **Example**
@ -489,13 +489,13 @@ gccMurmurHash(par1, ...)
**Arguments** **Arguments**
- `par1, ...` — A variable number of parameters that can be any of the [supported data types](../../sql-reference/data-types/index.md#data_types). - `par1, ...` — A variable number of parameters that can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md/#data_types).
**Returned value** **Returned value**
- Calculated hash value. - Calculated hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -526,12 +526,12 @@ murmurHash3_64(par1, ...)
**Arguments** **Arguments**
Both functions take a variable number of input parameters. Arguments can be any of the [supported data types](../../sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data). Both functions take a variable number of input parameters. Arguments can be any of the [supported data types](/docs/en/sql-reference/data-types/index.md). For some data types calculated value of hash function may be the same for the same values even if types of arguments differ (integers of different size, named and unnamed `Tuple` with the same data, `Map` and the corresponding `Array(Tuple(key, value))` type with the same data).
**Returned Value** **Returned Value**
- The `murmurHash3_32` function returns a [UInt32](../../sql-reference/data-types/int-uint.md) data type hash value. - The `murmurHash3_32` function returns a [UInt32](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
- The `murmurHash3_64` function returns a [UInt64](../../sql-reference/data-types/int-uint.md) data type hash value. - The `murmurHash3_64` function returns a [UInt64](/docs/en/sql-reference/data-types/int-uint.md) data type hash value.
**Example** **Example**
@ -557,13 +557,13 @@ murmurHash3_128(expr)
**Arguments** **Arguments**
- `expr` — A list of [expressions](../../sql-reference/syntax.md#syntax-expressions). [String](../../sql-reference/data-types/string.md). - `expr` — A list of [expressions](/docs/en/sql-reference/syntax.md/#syntax-expressions). [String](/docs/en/sql-reference/data-types/string.md).
**Returned value** **Returned value**
A 128-bit `MurmurHash3` hash value. A 128-bit `MurmurHash3` hash value.
Type: [FixedString(16)](../../sql-reference/data-types/fixedstring.md). Type: [FixedString(16)](/docs/en/sql-reference/data-types/fixedstring.md).
**Example** **Example**
@ -593,13 +593,13 @@ xxh3(expr)
**Arguments** **Arguments**
- `expr` — A list of [expressions](../../sql-reference/syntax.md#syntax-expressions) of any data type. - `expr` — A list of [expressions](/docs/en/sql-reference/syntax.md/#syntax-expressions) of any data type.
**Returned value** **Returned value**
A 64-bit `xxh3` hash value. A 64-bit `xxh3` hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -658,7 +658,7 @@ Result:
Splits a ASCII string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case sensitive. Splits a ASCII string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case sensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -668,14 +668,14 @@ ngramSimHash(string[, ngramsize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -697,7 +697,7 @@ Result:
Splits a ASCII string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case insensitive. Splits a ASCII string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case insensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -707,14 +707,14 @@ ngramSimHashCaseInsensitive(string[, ngramsize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -736,7 +736,7 @@ Result:
Splits a UTF-8 string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case sensitive. Splits a UTF-8 string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case sensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -746,14 +746,14 @@ ngramSimHashUTF8(string[, ngramsize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -775,7 +775,7 @@ Result:
Splits a UTF-8 string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case insensitive. Splits a UTF-8 string into n-grams of `ngramsize` symbols and returns the n-gram `simhash`. Is case insensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -785,14 +785,14 @@ ngramSimHashCaseInsensitiveUTF8(string[, ngramsize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -814,7 +814,7 @@ Result:
Splits a ASCII string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case sensitive. Splits a ASCII string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case sensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -824,14 +824,14 @@ wordShingleSimHash(string[, shinglesize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -853,7 +853,7 @@ Result:
Splits a ASCII string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case insensitive. Splits a ASCII string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case insensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -863,14 +863,14 @@ wordShingleSimHashCaseInsensitive(string[, shinglesize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -892,7 +892,7 @@ Result:
Splits a UTF-8 string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case sensitive. Splits a UTF-8 string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case sensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -902,14 +902,14 @@ wordShingleSimHashUTF8(string[, shinglesize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optinal. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optinal. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -931,7 +931,7 @@ Result:
Splits a UTF-8 string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case insensitive. Splits a UTF-8 string into parts (shingles) of `shinglesize` words and returns the word shingle `simhash`. Is case insensitive.
Can be used for detection of semi-duplicate strings with [bitHammingDistance](../../sql-reference/functions/bit-functions.md#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same. Can be used for detection of semi-duplicate strings with [bitHammingDistance](/docs/en/sql-reference/functions/bit-functions.md/#bithammingdistance). The smaller is the [Hamming Distance](https://en.wikipedia.org/wiki/Hamming_distance) of the calculated `simhashes` of two strings, the more likely these strings are the same.
**Syntax** **Syntax**
@ -941,14 +941,14 @@ wordShingleSimHashCaseInsensitiveUTF8(string[, shinglesize])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Hash value. - Hash value.
Type: [UInt64](../../sql-reference/data-types/int-uint.md). Type: [UInt64](/docs/en/sql-reference/data-types/int-uint.md).
**Example** **Example**
@ -970,7 +970,7 @@ Result:
Splits a ASCII string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive. Splits a ASCII string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -980,15 +980,15 @@ ngramMinHash(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1010,7 +1010,7 @@ Result:
Splits a ASCII string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive. Splits a ASCII string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1020,15 +1020,15 @@ ngramMinHashCaseInsensitive(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1050,7 +1050,7 @@ Result:
Splits a UTF-8 string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive. Splits a UTF-8 string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1060,15 +1060,15 @@ ngramMinHashUTF8(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1090,7 +1090,7 @@ Result:
Splits a UTF-8 string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive. Splits a UTF-8 string into n-grams of `ngramsize` symbols and calculates hash values for each n-gram. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1100,15 +1100,15 @@ ngramMinHashCaseInsensitiveUTF8(string [, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1138,15 +1138,15 @@ ngramMinHashArg(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` n-grams each. - Tuple with two tuples with `hashnum` n-grams each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1176,15 +1176,15 @@ ngramMinHashArgCaseInsensitive(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` n-grams each. - Tuple with two tuples with `hashnum` n-grams each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1214,15 +1214,15 @@ ngramMinHashArgUTF8(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` n-grams each. - Tuple with two tuples with `hashnum` n-grams each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1252,15 +1252,15 @@ ngramMinHashArgCaseInsensitiveUTF8(string[, ngramsize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `ngramsize` — The size of an n-gram. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` n-grams each. - Tuple with two tuples with `hashnum` n-grams each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1282,7 +1282,7 @@ Result:
Splits a ASCII string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive. Splits a ASCII string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1292,15 +1292,15 @@ wordShingleMinHash(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1322,7 +1322,7 @@ Result:
Splits a ASCII string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive. Splits a ASCII string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1332,15 +1332,15 @@ wordShingleMinHashCaseInsensitive(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1362,7 +1362,7 @@ Result:
Splits a UTF-8 string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive. Splits a UTF-8 string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case sensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1372,15 +1372,15 @@ wordShingleMinHashUTF8(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1402,7 +1402,7 @@ Result:
Splits a UTF-8 string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive. Splits a UTF-8 string into parts (shingles) of `shinglesize` words and calculates hash values for each word shingle. Uses `hashnum` minimum hashes to calculate the minimum hash and `hashnum` maximum hashes to calculate the maximum hash. Returns a tuple with these hashes. Is case insensitive.
Can be used for detection of semi-duplicate strings with [tupleHammingDistance](../../sql-reference/functions/tuple-functions.md#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same. Can be used for detection of semi-duplicate strings with [tupleHammingDistance](/docs/en/sql-reference/functions/tuple-functions.md/#tuplehammingdistance). For two strings: if one of the returned hashes is the same for both strings, we think that those strings are the same.
**Syntax** **Syntax**
@ -1412,15 +1412,15 @@ wordShingleMinHashCaseInsensitiveUTF8(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two hashes — the minimum and the maximum. - Tuple with two hashes — the minimum and the maximum.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([UInt64](../../sql-reference/data-types/int-uint.md), [UInt64](../../sql-reference/data-types/int-uint.md)). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([UInt64](/docs/en/sql-reference/data-types/int-uint.md), [UInt64](/docs/en/sql-reference/data-types/int-uint.md)).
**Example** **Example**
@ -1450,15 +1450,15 @@ wordShingleMinHashArg(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` word shingles each. - Tuple with two tuples with `hashnum` word shingles each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1488,15 +1488,15 @@ wordShingleMinHashArgCaseInsensitive(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` word shingles each. - Tuple with two tuples with `hashnum` word shingles each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1526,15 +1526,15 @@ wordShingleMinHashArgUTF8(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` word shingles each. - Tuple with two tuples with `hashnum` word shingles each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**
@ -1564,15 +1564,15 @@ wordShingleMinHashArgCaseInsensitiveUTF8(string[, shinglesize, hashnum])
**Arguments** **Arguments**
- `string` — String. [String](../../sql-reference/data-types/string.md). - `string` — String. [String](/docs/en/sql-reference/data-types/string.md).
- `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](../../sql-reference/data-types/int-uint.md). - `shinglesize` — The size of a word shingle. Optional. Possible values: any number from `1` to `25`. Default value: `3`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
- `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](../../sql-reference/data-types/int-uint.md). - `hashnum` — The number of minimum and maximum hashes used to calculate the result. Optional. Possible values: any number from `1` to `25`. Default value: `6`. [UInt8](/docs/en/sql-reference/data-types/int-uint.md).
**Returned value** **Returned value**
- Tuple with two tuples with `hashnum` word shingles each. - Tuple with two tuples with `hashnum` word shingles each.
Type: [Tuple](../../sql-reference/data-types/tuple.md)([Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md)), [Tuple](../../sql-reference/data-types/tuple.md)([String](../../sql-reference/data-types/string.md))). Type: [Tuple](/docs/en/sql-reference/data-types/tuple.md)([Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md)), [Tuple](/docs/en/sql-reference/data-types/tuple.md)([String](/docs/en/sql-reference/data-types/string.md))).
**Example** **Example**