ClickHouse/docs/tr/engines/table-engines/special/dictionary.md
Ivan Blinkov cd14f9ebcb
SQL reference refactoring (#10857)
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2020-05-15 07:34:54 +03:00

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---
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-->