mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-04 05:22:17 +00:00
cd14f9ebcb
* split up select.md * array-join.md basic refactoring * distinct.md basic refactoring * format.md basic refactoring * from.md basic refactoring * group-by.md basic refactoring * having.md basic refactoring * additional index.md refactoring * into-outfile.md basic refactoring * join.md basic refactoring * limit.md basic refactoring * limit-by.md basic refactoring * order-by.md basic refactoring * prewhere.md basic refactoring * adjust operators/index.md links * adjust sample.md links * adjust more links * adjust operatots links * fix some links * adjust aggregate function article titles * basic refactor of remaining select clauses * absolute paths in make_links.sh * run make_links.sh * remove old select.md locations * translate docs/es * translate docs/fr * translate docs/fa * remove old operators.md location * change operators.md links * adjust links in docs/es * adjust links in docs/es * minor texts adjustments * wip * update machine translations to use new links * fix changelog * es build fixes * get rid of some select.md links * temporary adjust ru links * temporary adjust more ru links * improve curly brace handling * adjust ru as well * fa build fix * ru link fixes * zh link fixes * temporary disable part of anchor checks
98 lines
3.0 KiB
Markdown
98 lines
3.0 KiB
Markdown
---
|
||
machine_translated: true
|
||
machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
|
||
toc_priority: 35
|
||
toc_title: "S\xF6zl\xFCk"
|
||
---
|
||
|
||
# Sözlük {#dictionary}
|
||
|
||
Bu `Dictionary` motor görüntüler [sözlük](../../../sql-reference/dictionaries/external-dictionaries/external-dicts.md) bir ClickHouse tablo olarak veri.
|
||
|
||
Örnek olarak, bir sözlük düşünün `products` aşağıdaki yapılandırma ile:
|
||
|
||
``` xml
|
||
<dictionaries>
|
||
<dictionary>
|
||
<name>products</name>
|
||
<source>
|
||
<odbc>
|
||
<table>products</table>
|
||
<connection_string>DSN=some-db-server</connection_string>
|
||
</odbc>
|
||
</source>
|
||
<lifetime>
|
||
<min>300</min>
|
||
<max>360</max>
|
||
</lifetime>
|
||
<layout>
|
||
<flat/>
|
||
</layout>
|
||
<structure>
|
||
<id>
|
||
<name>product_id</name>
|
||
</id>
|
||
<attribute>
|
||
<name>title</name>
|
||
<type>String</type>
|
||
<null_value></null_value>
|
||
</attribute>
|
||
</structure>
|
||
</dictionary>
|
||
</dictionaries>
|
||
```
|
||
|
||
Sözlük verilerini sorgula:
|
||
|
||
``` sql
|
||
SELECT
|
||
name,
|
||
type,
|
||
key,
|
||
attribute.names,
|
||
attribute.types,
|
||
bytes_allocated,
|
||
element_count,
|
||
source
|
||
FROM system.dictionaries
|
||
WHERE name = 'products'
|
||
```
|
||
|
||
``` text
|
||
┌─name─────┬─type─┬─key────┬─attribute.names─┬─attribute.types─┬─bytes_allocated─┬─element_count─┬─source──────────┐
|
||
│ products │ Flat │ UInt64 │ ['title'] │ ['String'] │ 23065376 │ 175032 │ ODBC: .products │
|
||
└──────────┴──────┴────────┴─────────────────┴─────────────────┴─────────────────┴───────────────┴─────────────────┘
|
||
```
|
||
|
||
Kullanabilirsiniz [dictGet\*](../../../sql-reference/functions/ext-dict-functions.md#ext_dict_functions) sözlük verilerini bu formatta almak için işlev.
|
||
|
||
Bu görünüm, ham veri almanız gerektiğinde veya bir `JOIN` operasyon. Bu durumlar için şunları kullanabilirsiniz `Dictionary` bir tabloda sözlük verilerini görüntüleyen motor.
|
||
|
||
Sözdizimi:
|
||
|
||
``` sql
|
||
CREATE TABLE %table_name% (%fields%) engine = Dictionary(%dictionary_name%)`
|
||
```
|
||
|
||
Kullanım örneği:
|
||
|
||
``` sql
|
||
create table products (product_id UInt64, title String) Engine = Dictionary(products);
|
||
```
|
||
|
||
Ok
|
||
|
||
Masada ne olduğuna bir bak.
|
||
|
||
``` sql
|
||
select * from products limit 1;
|
||
```
|
||
|
||
``` text
|
||
┌────product_id─┬─title───────────┐
|
||
│ 152689 │ Some item │
|
||
└───────────────┴─────────────────┘
|
||
```
|
||
|
||
[Orijinal makale](https://clickhouse.tech/docs/en/operations/table_engines/dictionary/) <!--hide-->
|