mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-30 05:30:51 +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
62 lines
1.7 KiB
Markdown
62 lines
1.7 KiB
Markdown
---
|
|
machine_translated: true
|
|
machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
|
|
toc_priority: 46
|
|
toc_title: GenerateRandom
|
|
---
|
|
|
|
# Generaterandom {#table_engines-generate}
|
|
|
|
El motor de tabla GenerateRandom produce datos aleatorios para el esquema de tabla determinado.
|
|
|
|
Ejemplos de uso:
|
|
|
|
- Se usa en la prueba para poblar una tabla grande reproducible.
|
|
- Generar entrada aleatoria para pruebas de fuzzing.
|
|
|
|
## Uso en el servidor ClickHouse {#usage-in-clickhouse-server}
|
|
|
|
``` sql
|
|
ENGINE = GenerateRandom(random_seed, max_string_length, max_array_length)
|
|
```
|
|
|
|
El `max_array_length` y `max_string_length` parámetros especifican la longitud máxima de todos
|
|
columnas y cadenas de matriz correspondientemente en los datos generados.
|
|
|
|
Generar motor de tabla sólo admite `SELECT` consulta.
|
|
|
|
Es compatible con todos [Tipos de datos](../../../sql-reference/data-types/index.md) que se pueden almacenar en una tabla excepto `LowCardinality` y `AggregateFunction`.
|
|
|
|
**Ejemplo:**
|
|
|
|
**1.** Configurar el `generate_engine_table` tabla:
|
|
|
|
``` sql
|
|
CREATE TABLE generate_engine_table (name String, value UInt32) ENGINE = GenerateRandom(1, 5, 3)
|
|
```
|
|
|
|
**2.** Consultar los datos:
|
|
|
|
``` sql
|
|
SELECT * FROM generate_engine_table LIMIT 3
|
|
```
|
|
|
|
``` text
|
|
┌─name─┬──────value─┐
|
|
│ c4xJ │ 1412771199 │
|
|
│ r │ 1791099446 │
|
|
│ 7#$ │ 124312908 │
|
|
└──────┴────────────┘
|
|
```
|
|
|
|
## Detalles de la implementación {#details-of-implementation}
|
|
|
|
- No soportado:
|
|
- `ALTER`
|
|
- `SELECT ... SAMPLE`
|
|
- `INSERT`
|
|
- Indice
|
|
- Replicación
|
|
|
|
[Artículo Original](https://clickhouse.tech/docs/en/operations/table_engines/generate/) <!--hide-->
|