ClickHouse/docs/es/engines/table-engines/special/dictionary.md
Ivan Blinkov cd14f9ebcb
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Markdown

---
machine_translated: true
machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
toc_priority: 35
toc_title: Diccionario
---
# Diccionario {#dictionary}
El `Dictionary` el motor muestra el [diccionario](../../../sql-reference/dictionaries/external-dictionaries/external-dicts.md) datos como una tabla ClickHouse.
Como ejemplo, considere un diccionario de `products` con la siguiente configuración:
``` 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>
```
Consultar los datos del diccionario:
``` 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 │
└──────────┴──────┴────────┴─────────────────┴─────────────────┴─────────────────┴───────────────┴─────────────────┘
```
Puede usar el [dictGet\*](../../../sql-reference/functions/ext-dict-functions.md#ext_dict_functions) función para obtener los datos del diccionario en este formato.
Esta vista no es útil cuando necesita obtener datos sin procesar o cuando `JOIN` operación. Para estos casos, puede usar el `Dictionary` motor, que muestra los datos del diccionario en una tabla.
Sintaxis:
``` sql
CREATE TABLE %table_name% (%fields%) engine = Dictionary(%dictionary_name%)`
```
Ejemplo de uso:
``` sql
create table products (product_id UInt64, title String) Engine = Dictionary(products);
```
Ok
Echa un vistazo a lo que hay en la mesa.
``` sql
select * from products limit 1;
```
``` text
┌────product_id─┬─title───────────┐
│ 152689 │ Some item │
└───────────────┴─────────────────┘
```
[Artículo Original](https://clickhouse.tech/docs/en/operations/table_engines/dictionary/) <!--hide-->