fuzzQuery - ClickHouse Documentation

Perturbs the given query string with random variations.

Syntax

fuzzQuery(query[, max_query_length[, random_seed]])

Arguments

Argument	Description
`query`	(String) - The source query to perform the fuzzing on.
`max_query_length`	(UInt64) - A maximum length the query can get during the fuzzing process.
`random_seed`	(UInt64) - A random seed for producing stable results.

Returned value

A table object with a single column containing perturbed query strings.

Usage Example

SELECT * FROM fuzzQuery('SELECT materialize(\'a\' AS key) GROUP BY key') LIMIT 2;

   ┌─query──────────────────────────────────────────────────────────┐
1. │ SELECT 'a' AS key GROUP BY key                                 │
2. │ EXPLAIN PIPELINE compact = true SELECT 'a' AS key GROUP BY key │
   └────────────────────────────────────────────────────────────────┘

​Syntax

​Arguments

​Returned value

​Usage Example

Syntax

Arguments

Returned value

Usage Example