mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 17:32:32 +00:00
46 lines
2.1 KiB
Markdown
46 lines
2.1 KiB
Markdown
|
---
|
|||
|
|
machine_translated: true
|
|||
|
|
machine_translated_rev: e8cd92bba3269f47787db090899f7c242adf7818
|
|||
|
|
toc_priority: 47
|
|||
|
|
toc_title: generateRandom
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
# generateRandom {#generaterandom}
|
|||
|
|
|
|||
|
|
Verilen şema ile rastgele veri üretir.
|
|||
|
|
Test tablolarını verilerle doldurmaya izin verir.
|
|||
|
|
Dışında tabloda saklanabilir tüm veri türlerini destekler `LowCardinality` ve `AggregateFunction`.
|
|||
|
|
|
|||
|
|
``` sql
|
|||
|
|
generateRandom('name TypeName[, name TypeName]...', [, 'random_seed'[, 'max_string_length'[, 'max_array_length']]]);
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
**Parametre**
|
|||
|
|
|
|||
|
|
- `name` — Name of corresponding column.
|
|||
|
|
- `TypeName` — Type of corresponding column.
|
|||
|
|
- `limit` — Number of rows to generate.
|
|||
|
|
- `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.
|
|||
|
|
|
|||
|
|
**Döndürülen Değer**
|
|||
|
|
|
|||
|
|
Istenen şema ile bir tablo nesnesi.
|
|||
|
|
|
|||
|
|
## Kullanım Örneği {#usage-example}
|
|||
|
|
|
|||
|
|
``` sql
|
|||
|
|
SELECT * FROM generateRandom('a Array(Int8), d Decimal32(4), c Tuple(DateTime64(3), UUID)', 1, 10, 2);
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
``` 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') │
|
|||
|
|
└──────────┴──────────────┴────────────────────────────────────────────────────────────────────┘
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
[Orijinal makale](https://clickhouse.tech/docs/en/query_language/table_functions/generate/) <!--hide-->
|