Merge branch 'master' into fix-typo

Author: kssenii

base/poco/Net/include/Poco/Net/NameValueCollection.h

@@ -79,6 +79,11 @@ namespace Net
         /// Returns the value of the first name-value pair with the given name.
         /// If no value with the given name has been found, the defaultValue is returned.
 
+        const std::vector<std::reference_wrapper<const std::string>> getAll(const std::string & name) const;
+        /// Returns all values of all name-value pairs with the given name.
+        ///
+        /// Returns an empty vector if there are no name-value pairs with the given name.
+
         bool has(const std::string & name) const;
         /// Returns true if there is at least one name-value pair
         /// with the given name.

base/poco/Net/src/NameValueCollection.cpp

@@ -15,6 +15,7 @@
 #include "Poco/Net/NameValueCollection.h"
 #include "Poco/Exception.h"
 #include <algorithm>
+#include <functional>
 
 
 using Poco::NotFoundException;
@@ -55,7 +56,7 @@ void NameValueCollection::swap(NameValueCollection& nvc)
 	std::swap(_map, nvc._map);
 }
 
-	
+
 const std::string& NameValueCollection::operator [] (const std::string& name) const
 {
 	ConstIterator it = _map.find(name);
@@ -65,8 +66,8 @@ const std::string& NameValueCollection::operator [] (const std::string& name) co
 		throw NotFoundException(name);
 }
 
-	
-void NameValueCollection::set(const std::string& name, const std::string& value)	
+
+void NameValueCollection::set(const std::string& name, const std::string& value)
 {
 	Iterator it = _map.find(name);
 	if (it != _map.end())
@@ -75,13 +76,13 @@ void NameValueCollection::set(const std::string& name, const std::string& value)
 		_map.insert(HeaderMap::ValueType(name, value));
 }
 
-	
+
 void NameValueCollection::add(const std::string& name, const std::string& value)
 {
 	_map.insert(HeaderMap::ValueType(name, value));
 }
 
-	
+
 const std::string& NameValueCollection::get(const std::string& name) const
 {
 	ConstIterator it = _map.find(name);
@@ -101,6 +102,15 @@ const std::string& NameValueCollection::get(const std::string& name, const std::
 		return defaultValue;
 }
 
+const std::vector<std::reference_wrapper<const std::string>> NameValueCollection::getAll(const std::string& name) const
+{
+    std::vector<std::reference_wrapper<const std::string>> values;
+    for (ConstIterator it = _map.find(name); it != _map.end(); it++)
+        if (it->first == name)
+            values.push_back(it->second);
+    return values;
+}
+
 
 bool NameValueCollection::has(const std::string& name) const
 {
@@ -113,19 +123,19 @@ NameValueCollection::ConstIterator NameValueCollection::find(const std::string&
 	return _map.find(name);
 }
 
-	
+
 NameValueCollection::ConstIterator NameValueCollection::begin() const
 {
 	return _map.begin();
 }
 
-	
+
 NameValueCollection::ConstIterator NameValueCollection::end() const
 {
 	return _map.end();
 }
 
-	
+
 bool NameValueCollection::empty() const
 {
 	return _map.empty();

docs/en/interfaces/http.md

@@ -325,6 +325,37 @@ $ curl -sS 'http://localhost:8123/?max_result_bytes=4000000&buffer_size=3000000&
 
 Use buffering to avoid situations where a query processing error occurred after the response code and HTTP headers were sent to the client. In this situation, an error message is written at the end of the response body, and on the client-side, the error can only be detected at the parsing stage.
 
+## Setting a role with query parameters {#setting-role-with-query-parameters}
+
+In certain scenarios, it might be required to set the granted role first, before executing the statement itself.
+However, it is not possible to send `SET ROLE` and the statement together, as multi-statements are not allowed:
+
+```
+curl -sS "http://localhost:8123" --data-binary "SET ROLE my_role;SELECT * FROM my_table;"
+```
+
+Which will result in an error:
+
+```
+Code: 62. DB::Exception: Syntax error (Multi-statements are not allowed)
+```
+
+To overcome this limitation, you could use the `role` query parameter instead:
+
+```
+curl -sS "http://localhost:8123?role=my_role" --data-binary "SELECT * FROM my_table;"
+```
+
+This will be an equivalent of executing `SET ROLE my_role` before the statement.
+
+Additionally, it is possible to specify multiple `role` query parameters:
+
+```
+curl -sS "http://localhost:8123?role=my_role&role=my_other_role" --data-binary "SELECT * FROM my_table;"
+```
+
+In this case, `?role=my_role&role=my_other_role` works similarly to executing `SET ROLE my_role, my_other_role` before the statement.
+
 ## HTTP response codes caveats {#http_response_codes_caveats}
 
 Because of limitation of HTTP protocol, HTTP 200 response code does not guarantee that a query was successful.

docs/en/operations/settings/settings.md

@@ -5480,3 +5480,11 @@ Default value: 'false'.
 ## allow_suspicious_primary_key {#allow_suspicious_primary_key}
 
 Allow suspicious `PRIMARY KEY`/`ORDER BY` for MergeTree (i.e. SimpleAggregateFunction).
+
+## mysql_datatypes_support_level
+
+Defines how MySQL types are converted to corresponding ClickHouse types. A comma separated list in any combination of `decimal`, `datetime64`, `date2Date32` or `date2String`.
+- `decimal`: convert `NUMERIC` and `DECIMAL` types to `Decimal` when precision allows it.
+- `datetime64`: convert `DATETIME` and `TIMESTAMP` types to `DateTime64` instead of `DateTime` when precision is not `0`.
+- `date2Date32`: convert `DATE` to `Date32` instead of `Date`. Takes precedence over `date2String`.
+- `date2String`: convert `DATE` to `String` instead of `Date`. Overridden by `datetime64`.

docs/en/sql-reference/functions/rounding-functions.md

@@ -36,12 +36,12 @@ Alias: `truncate`.
 
 **Parameters**
 
-- `input`: A float type [Float](/docs/en/sql-reference/data-types/float.md).
-- `precision`: A decimal type [Decimal](/docs/en/sql-reference/data-types/decimal.md).
+- `input`: A numeric type ([Float](/docs/en/sql-reference/data-types/float.md), [Decimal](/docs/en/sql-reference/data-types/decimal.md) or [Integer](/docs/en/sql-reference/data-types/int-uint.md)).
+- `precision`: An [Integer](/docs/en/sql-reference/data-types/int-uint.md) type.
 
 **Returned value**
 
-- A [Float64](/docs/en/sql-reference/data-types/float.md) value.
+- A data type of `input`.
 
 **Example**
 

docs/en/sql-reference/functions/string-replace-functions.md

@@ -208,7 +208,7 @@ translateUTF8(s, from, to)
 
 **Returned value**
 
-- `s`: A string type [String](/docs/en/sql-reference/data-types/string.md).
+- A [String](/docs/en/sql-reference/data-types/string.md) data type value.
 
 **Examples**
 

docs/ru/sql-reference/functions/rounding-functions.md

@@ -24,6 +24,42 @@ N может быть отрицательным.
 Возвращает наименьшее круглое число, которое больше или равно, чем x.
 В остальном, аналогично функции floor, см. выше.
 
+## trunc(x\[, N\]), truncate(x\[, N\])
+
+Возвращает круглое число с наибольшим абсолютным значением, абсолютное значение которого меньше или равно значению `x`. Во всех остальных отношениях она аналогична функции 'floor' (см. выше).
+
+**Синтаксис**
+
+```sql
+trunc(input, precision)
+```
+
+Alias: `truncate`.
+
+**Параметры**
+
+- `input` - число для округления. Может быть в любом чисельном формате ([Float](/docs/en/sql-reference/data-types/float.md), [Decimal](/docs/en/sql-reference/data-types/decimal.md) или [Integer](/docs/en/sql-reference/data-types/int-uint.md)).
+- `precision` - точность округления, [целочисельный](/docs/en/sql-reference/data-types/int-uint.md) тип.
+
+**Возвращаемое значение**
+
+- Тип даных в `input`.
+
+**Пример**
+
+Query:
+
+```sql
+SELECT trunc(123.499, 1) as res;
+```
+
+```response
+┌───res─┐
+│ 123.4 │
+└───────┘
+```
+
+
 ## round(x\[, N\]) {#rounding_functions-round}
 
 Округляет значение до указанного десятичного разряда.

docs/zh/sql-reference/functions/rounding-functions.md

@@ -19,6 +19,41 @@ slug: /zh/sql-reference/functions/rounding-functions
 
 返回大于或等于’x’的最小舍入数。在其他方面，它与’floor’功能相同（见上文）。
 
+## trunc(x\[, N\]), truncate(x\[, N\])
+
+返回绝对值小于或等于 `x` 的绝对值最大的整数。在其他方面，它与 "floor "函数相同（见上文）。
+
+**语法**
+
+```SQL
+trunc(input, precision)
+```
+
+别名：`truncate`。
+
+**参数***
+
+- `输入` 数值类型（[Float](/docs/en/sql-reference/data-types/float.md)、[Decimal](/docs/en/sql-reference/data-types/decimal.md)或[Integer](/docs/en/sql-reference/data-types/int-uint.md)）。
+- `精度` 一个 [Integer](/docs/en/sql-reference/data-types/int-uint.md) 类型。
+
+**返回值**
+
+- 输入 "的数据类型。
+
+**示例
+
+查询：
+
+``` SQL
+SELECT trunc(123.499, 1) as res；
+```
+
+```responce
+┌──res─┐
+│ 123.4 │
+└───────┘
+```
+
 ## 圆形(x\[,N\]) {#rounding_functions-round}
 
 将值取整到指定的小数位数。

src/Analyzer/Passes/QueryAnalysisPass.cpp

@@ -7164,7 +7164,9 @@ void QueryAnalyzer::resolveTableFunction(QueryTreeNodePtr & table_function_node,
         auto parametrized_view_storage = scope_context->getQueryContext()->buildParametrizedViewStorage(function_ast, database_name, table_name);
         if (parametrized_view_storage)
         {
-            table_function_node = std::make_shared<TableNode>(parametrized_view_storage, scope_context);
+            auto fake_table_node = std::make_shared<TableNode>(parametrized_view_storage, scope_context);
+            fake_table_node->setAlias(table_function_node->getAlias());
+            table_function_node = fake_table_node;
             return;
         }
 

src/Core/Settings.h

@@ -636,7 +636,7 @@ class IColumn;
     M(Bool, allow_experimental_database_materialized_mysql, false, "Allow to create database with Engine=MaterializedMySQL(...).", 0) \
     M(Bool, allow_experimental_database_materialized_postgresql, false, "Allow to create database with Engine=MaterializedPostgreSQL(...).", 0) \
     M(Bool, system_events_show_zero_values, false, "When querying system.events or system.metrics tables, include all metrics, even with zero values.", 0) \
-    M(MySQLDataTypesSupport, mysql_datatypes_support_level, MySQLDataTypesSupportList{}, "Which MySQL types should be converted to corresponding ClickHouse types (rather than being represented as String). Can be empty or any combination of 'decimal', 'datetime64', 'date2Date32' or 'date2String'. When empty MySQL's DECIMAL and DATETIME/TIMESTAMP with non-zero precision are seen as String on ClickHouse's side.", 0) \
+    M(MySQLDataTypesSupport, mysql_datatypes_support_level, MySQLDataTypesSupportList{}, "Defines how MySQL types are converted to corresponding ClickHouse types. A comma separated list in any combination of 'decimal', 'datetime64', 'date2Date32' or 'date2String'. decimal: convert NUMERIC and DECIMAL types to Decimal when precision allows it. datetime64: convert DATETIME and TIMESTAMP types to DateTime64 instead of DateTime when precision is not 0. date2Date32: convert DATE to Date32 instead of Date. Takes precedence over date2String. date2String: convert DATE to String instead of Date. Overridden by datetime64.", 0) \
     M(Bool, optimize_trivial_insert_select, true, "Optimize trivial 'INSERT INTO table SELECT ... FROM TABLES' query", 0) \
     M(Bool, allow_non_metadata_alters, true, "Allow to execute alters which affects not only tables metadata, but also data on disk", 0) \
     M(Bool, enable_global_with_statement, true, "Propagate WITH statements to UNION queries and all subqueries", 0) \
@@ -795,6 +795,7 @@ class IColumn;
     M(Bool, throw_on_error_from_cache_on_write_operations, false, "Ignore error from cache when caching on write operations (INSERT, merges)", 0) \
     M(UInt64, filesystem_cache_segments_batch_size, 20, "Limit on size of a single batch of file segments that a read buffer can request from cache. Too low value will lead to excessive requests to cache, too large may slow down eviction from cache", 0) \
     M(UInt64, filesystem_cache_reserve_space_wait_lock_timeout_milliseconds, 1000, "Wait time to lock cache for sapce reservation in filesystem cache", 0) \
+    M(UInt64, temporary_data_in_cache_reserve_space_wait_lock_timeout_milliseconds, (10 * 60 * 1000), "Wait time to lock cache for sapce reservation for temporary data in filesystem cache", 0) \
     \
     M(Bool, use_page_cache_for_disks_without_file_cache, false, "Use userspace page cache for remote disks that don't have filesystem cache enabled.", 0) \
     M(Bool, read_from_page_cache_if_exists_otherwise_bypass_cache, false, "Use userspace page cache in passive mode, similar to read_from_filesystem_cache_if_exists_otherwise_bypass_cache.", 0) \