ClickHouse/docs/es/sql-reference/table-functions/generate.md

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---
machine_translated: true
machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
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toc_priority: 47
toc_title: generateRandom
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---
# generateRandom {#generaterandom}
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Genera datos aleatorios con un esquema dado.
Permite rellenar tablas de prueba con datos.
Admite todos los tipos de datos que se pueden almacenar en la tabla, excepto `LowCardinality` y `AggregateFunction`.
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``` sql
generateRandom('name TypeName[, name TypeName]...', [, 'random_seed'[, 'max_string_length'[, 'max_array_length']]]);
```
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**Parámetros**
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- `name` — Name of corresponding column.
- `TypeName` — Type of corresponding column.
- `max_array_length` — Maximum array length for all generated arrays. Defaults to `10`.
- `max_string_length` — Maximum string length for all generated strings. Defaults to `10`.
- `random_seed` — Specify random seed manually to produce stable results. If NULL — seed is randomly generated.
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**Valor devuelto**
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Un objeto de tabla con el esquema solicitado.
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## Ejemplo de uso {#usage-example}
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``` sql
SELECT * FROM generateRandom('a Array(Int8), d Decimal32(4), c Tuple(DateTime64(3), UUID)', 1, 10, 2) LIMIT 3;
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```
``` text
┌─a────────┬────────────d─┬─c──────────────────────────────────────────────────────────────────┐
│ [77] │ -124167.6723 │ ('2061-04-17 21:59:44.573','3f72f405-ec3e-13c8-44ca-66ef335f7835') │
│ [32,110] │ -141397.7312 │ ('1979-02-09 03:43:48.526','982486d1-5a5d-a308-e525-7bd8b80ffa73') │
│ [68] │ -67417.0770 │ ('2080-03-12 14:17:31.269','110425e5-413f-10a6-05ba-fa6b3e929f15') │
└──────────┴──────────────┴────────────────────────────────────────────────────────────────────┘
```
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[Artículo Original](https://clickhouse.tech/docs/en/query_language/table_functions/generate/) <!--hide-->