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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
2.3 KiB
2.3 KiB
| machine_translated | machine_translated_rev | toc_priority | toc_title |
|---|---|---|---|
| true | 72537a2d52 |
47 | ژنرال |
ژنرال
تولید داده های تصادفی با طرح داده شده است.
اجازه می دهد تا به جمعیت جداول تست با داده ها.
پشتیبانی از تمام انواع داده است که می تواند در جدول به جز ذخیره می شود LowCardinality و AggregateFunction.
generateRandom('name TypeName[, name TypeName]...', [, 'random_seed'[, 'max_string_length'[, 'max_array_length']]]);
پارامترها
name— Name of corresponding column.TypeName— Type of corresponding column.max_array_length— Maximum array length for all generated arrays. Defaults to10.max_string_length— Maximum string length for all generated strings. Defaults to10.random_seed— Specify random seed manually to produce stable results. If NULL — seed is randomly generated.
مقدار بازگشتی
یک شی جدول با طرح درخواست.
مثال طریقه استفاده
SELECT * FROM generateRandom('a Array(Int8), d Decimal32(4), c Tuple(DateTime64(3), UUID)', 1, 10, 2) LIMIT 3;
┌─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') │
└──────────┴──────────────┴────────────────────────────────────────────────────────────────────┘