mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-30 11:32:03 +00:00
121 lines
7.3 KiB
Markdown
121 lines
7.3 KiB
Markdown
# 功能与Yandex的工作。梅特里卡词典 {#functions-for-working-with-yandex-metrica-dictionaries}
|
||
|
||
为了使下面的功能正常工作,服务器配置必须指定获取所有Yandex的路径和地址。梅特里卡字典. 字典在任何这些函数的第一次调用时加载。 如果无法加载引用列表,则会引发异常。
|
||
|
||
For information about creating reference lists, see the section «Dictionaries».
|
||
|
||
## 多个地理基 {#multiple-geobases}
|
||
|
||
ClickHouse支持同时使用多个备选地理基(区域层次结构),以支持某些地区所属国家的各种观点。
|
||
|
||
该 ‘clickhouse-server’ config指定具有区域层次结构的文件::`<path_to_regions_hierarchy_file>/opt/geo/regions_hierarchy.txt</path_to_regions_hierarchy_file>`
|
||
|
||
除了这个文件,它还搜索附近有_符号和任何后缀附加到名称(文件扩展名之前)的文件。
|
||
例如,它还会找到该文件 `/opt/geo/regions_hierarchy_ua.txt`,如果存在。
|
||
|
||
`ua` 被称为字典键。 对于没有后缀的字典,键是空字符串。
|
||
|
||
所有字典都在运行时重新加载(每隔一定数量的秒重新加载一次,如builtin_dictionaries_reload_interval config参数中定义,或默认情况下每小时一次)。 但是,可用字典列表在服务器启动时定义一次。
|
||
|
||
All functions for working with regions have an optional argument at the end – the dictionary key. It is referred to as the geobase.
|
||
示例:
|
||
|
||
regionToCountry(RegionID) – Uses the default dictionary: /opt/geo/regions_hierarchy.txt
|
||
regionToCountry(RegionID, '') – Uses the default dictionary: /opt/geo/regions_hierarchy.txt
|
||
regionToCountry(RegionID, 'ua') – Uses the dictionary for the 'ua' key: /opt/geo/regions_hierarchy_ua.txt
|
||
|
||
### ツ环板(ョツ嘉ッツ偲青regionシツ氾カツ鉄ツ工ツ渉\]) {#regiontocityid-geobase}
|
||
|
||
Accepts a UInt32 number – the region ID from the Yandex geobase. If this region is a city or part of a city, it returns the region ID for the appropriate city. Otherwise, returns 0.
|
||
|
||
### 虏茅驴麓卤戮碌禄路戮鲁拢\]) {#regiontoareaid-geobase}
|
||
|
||
将区域转换为区域(地理数据库中的类型5)。 在所有其他方式,这个功能是一样的 ‘regionToCity’.
|
||
|
||
``` sql
|
||
SELECT DISTINCT regionToName(regionToArea(toUInt32(number), 'ua'))
|
||
FROM system.numbers
|
||
LIMIT 15
|
||
```
|
||
|
||
┌─regionToName(regionToArea(toUInt32(number), \'ua\'))─┐
|
||
│ │
|
||
│ Moscow and Moscow region │
|
||
│ St. Petersburg and Leningrad region │
|
||
│ Belgorod region │
|
||
│ Ivanovsk region │
|
||
│ Kaluga region │
|
||
│ Kostroma region │
|
||
│ Kursk region │
|
||
│ Lipetsk region │
|
||
│ Orlov region │
|
||
│ Ryazan region │
|
||
│ Smolensk region │
|
||
│ Tambov region │
|
||
│ Tver region │
|
||
│ Tula region │
|
||
└──────────────────────────────────────────────────────┘
|
||
|
||
### regionToDistrict(id\[,geobase\]) {#regiontodistrictid-geobase}
|
||
|
||
将区域转换为联邦区(地理数据库中的类型4)。 在所有其他方式,这个功能是一样的 ‘regionToCity’.
|
||
|
||
``` sql
|
||
SELECT DISTINCT regionToName(regionToDistrict(toUInt32(number), 'ua'))
|
||
FROM system.numbers
|
||
LIMIT 15
|
||
```
|
||
|
||
┌─regionToName(regionToDistrict(toUInt32(number), \'ua\'))─┐
|
||
│ │
|
||
│ Central federal district │
|
||
│ Northwest federal district │
|
||
│ South federal district │
|
||
│ North Caucases federal district │
|
||
│ Privolga federal district │
|
||
│ Ural federal district │
|
||
│ Siberian federal district │
|
||
│ Far East federal district │
|
||
│ Scotland │
|
||
│ Faroe Islands │
|
||
│ Flemish region │
|
||
│ Brussels capital region │
|
||
│ Wallonia │
|
||
│ Federation of Bosnia and Herzegovina │
|
||
└──────────────────────────────────────────────────────────┘
|
||
|
||
### 虏茅驴麓卤戮碌禄路戮鲁拢(陆毛隆隆(803)888-8325\]) {#regiontocountryid-geobase}
|
||
|
||
将区域转换为国家。 在所有其他方式,这个功能是一样的 ‘regionToCity’.
|
||
示例: `regionToCountry(toUInt32(213)) = 225` 转换莫斯科(213)到俄罗斯(225)。
|
||
|
||
### 掳胫((禄脢鹿脷露胫鲁隆鹿((酶-11-16""\[脪陆,ase\]) {#regiontocontinentid-geobase}
|
||
|
||
将区域转换为大陆。 在所有其他方式,这个功能是一样的 ‘regionToCity’.
|
||
示例: `regionToContinent(toUInt32(213)) = 10001` 将莫斯科(213)转换为欧亚大陆(10001)。
|
||
|
||
### ツ环板(ョツ嘉ッツ偲青regionャツ静ャツ青サツ催ャツ渉\]) {#regiontopopulationid-geobase}
|
||
|
||
获取区域的人口。
|
||
The population can be recorded in files with the geobase. See the section «External dictionaries».
|
||
如果没有为该区域记录人口,则返回0。
|
||
在Yandex地理数据库中,可能会为子区域记录人口,但不会为父区域记录人口。
|
||
|
||
### regionIn(lhs,rhs\[,地理数据库\]) {#regioninlhs-rhs-geobase}
|
||
|
||
检查是否 ‘lhs’ 属于一个区域 ‘rhs’ 区域。 如果属于UInt8,则返回等于1的数字,如果不属于则返回0。
|
||
The relationship is reflexive – any region also belongs to itself.
|
||
|
||
### ツ暗ェツ氾环催ツ団ツ法ツ人\]) {#regionhierarchyid-geobase}
|
||
|
||
Accepts a UInt32 number – the region ID from the Yandex geobase. Returns an array of region IDs consisting of the passed region and all parents along the chain.
|
||
示例: `regionHierarchy(toUInt32(213)) = [213,1,3,225,10001,10000]`.
|
||
|
||
### 地区名称(id\[,郎\]) {#regiontonameid-lang}
|
||
|
||
Accepts a UInt32 number – the region ID from the Yandex geobase. A string with the name of the language can be passed as a second argument. Supported languages are: ru, en, ua, uk, by, kz, tr. If the second argument is omitted, the language ‘ru’ is used. If the language is not supported, an exception is thrown. Returns a string – the name of the region in the corresponding language. If the region with the specified ID doesn’t exist, an empty string is returned.
|
||
|
||
`ua` 和 `uk` 都意味着乌克兰。
|
||
|
||
[原始文章](https://clickhouse.tech/docs/en/query_language/functions/ym_dict_functions/) <!--hide-->
|