aggThrow

此函数可用于测试异常安全性。 它会在创建时按指定概率抛出异常。

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aggThrow

引入版本：v20.1.0

此函数可用于测试异常安全性。它会在创建时按指定概率抛出异常。

语法

aggThrow(throw_prob)

参数

• throw_prob — 在创建时抛出异常的概率。Float64

返回值

返回一个异常：Code: 503. DB::Exception: Aggregate function aggThrow has thrown exception successfully。

示例

用法示例

Query

SELECT number % 2 AS even, aggThrow(number) FROM numbers(10) GROUP BY even;

Response

Received exception:
Code: 503. DB::Exception: Aggregate function aggThrow has thrown exception successfully: While executing AggregatingTransform. (AGGREGATE_FUNCTION_THROW)