Merge branch 'master' into feature/transform-function-big-endian-support

docs/en/sql-reference/data-types/uuid.md

@@ -6,42 +6,42 @@ sidebar_label: UUID
 
 # UUID
 
-A universally unique identifier (UUID) is a 16-byte number used to identify records. For detailed information about the UUID, see [Wikipedia](https://en.wikipedia.org/wiki/Universally_unique_identifier).
+A Universally Unique Identifier (UUID) is a 16-byte value used to identify records. For detailed information about UUIDs, see [Wikipedia](https://en.wikipedia.org/wiki/Universally_unique_identifier).
 
-The example of UUID type value is represented below:
+While different UUID variants exist (see [here](https://datatracker.ietf.org/doc/html/draft-ietf-uuidrev-rfc4122bis)), ClickHouse does not validate that inserted UUIDs conform to a particular variant. UUIDs are internally treated as a sequence of 16 random bytes with [8-4-4-4-12 representation](https://en.wikipedia.org/wiki/Universally_unique_identifier#Textual_representation) at SQL level.
+
+Example UUID value:
 
 ``` text
 61f0c404-5cb3-11e7-907b-a6006ad3dba0
 ```
 
-If you do not specify the UUID column value when inserting a new record, the UUID value is filled with zero:
+The default UUID is all-zero. It is used, for example, when a new record is inserted but no value for a UUID column is specified:
 
 ``` text
 00000000-0000-0000-0000-000000000000
 ```
 
-## How to Generate
+## Generating UUIDs
 
-To generate the UUID value, ClickHouse provides the [generateUUIDv4](../../sql-reference/functions/uuid-functions.md) function.
+ClickHouse provides the [generateUUIDv4](../../sql-reference/functions/uuid-functions.md) function to generate random UUID version 4 values.
 
 ## Usage Example
 
 **Example 1**
 
-This example demonstrates creating a table with the UUID type column and inserting a value into the table.
+This example demonstrates the creation of a table with a UUID column and the insertion of a value into the table.
 
 ``` sql
 CREATE TABLE t_uuid (x UUID, y String) ENGINE=TinyLog
-```
 
-``` sql
 INSERT INTO t_uuid SELECT generateUUIDv4(), 'Example 1'
-```
 
-``` sql
 SELECT * FROM t_uuid
 ```
 
+Result:
+
 ``` text
 ┌────────────────────────────────────x─┬─y─────────┐
 │ 417ddc5d-e556-4d27-95dd-a34d84e46a50 │ Example 1 │
@@ -50,13 +50,11 @@ SELECT * FROM t_uuid
 
 **Example 2**
 
-In this example, the UUID column value is not specified when inserting a new record.
+In this example, no UUID column value is specified when the record is inserted, i.e. the default UUID value is inserted:
 
 ``` sql
 INSERT INTO t_uuid (y) VALUES ('Example 2')
-```
 
-``` sql
 SELECT * FROM t_uuid
 ```
 

src/IO/ReadHelpers.h

@@ -1101,17 +1101,14 @@ inline void readBinary(bool & x, ReadBuffer & buf)
 }
 
 inline void readBinary(String & x, ReadBuffer & buf) { readStringBinary(x, buf); }
-inline void readBinary(Int32 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
-inline void readBinary(Int128 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
-inline void readBinary(Int256 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
-inline void readBinary(UInt32 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
-inline void readBinary(UInt128 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
-inline void readBinary(UInt256 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
 inline void readBinary(Decimal32 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
 inline void readBinary(Decimal64 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
 inline void readBinary(Decimal128 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
 inline void readBinary(Decimal256 & x, ReadBuffer & buf) { readPODBinary(x.value, buf); }
 inline void readBinary(LocalDate & x, ReadBuffer & buf) { readPODBinary(x, buf); }
+inline void readBinary(UUID & x, ReadBuffer & buf) { readPODBinary(x, buf); }
+inline void readBinary(IPv4 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
+inline void readBinary(IPv6 & x, ReadBuffer & buf) { readPODBinary(x, buf); }
 
 inline void readBinary(StackTrace::FramePointers & x, ReadBuffer & buf) { readPODBinary(x, buf); }
 

tests/integration/test_host_regexp_multiple_ptr_records/test.py

@@ -1,4 +1,10 @@
 import pytest
+
+# FIXME This test is too flaky
+# https://github.com/ClickHouse/ClickHouse/issues/51471
+
+pytestmark = pytest.mark.skip
+
 import socket
 from helpers.cluster import ClickHouseCluster, get_docker_compose_path, run_and_check
 from time import sleep