Feat: A SQL function obfuscateQuery#98305
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alexey-milovidov merged 3 commits intoClickHouse:masterfrom Mar 25, 2026
Merged
Feat: A SQL function obfuscateQuery#98305alexey-milovidov merged 3 commits intoClickHouse:masterfrom
alexey-milovidov merged 3 commits intoClickHouse:masterfrom
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Workflow [PR], commit [06a79fa] Summary: ✅ AI ReviewSummaryThis PR adds Missing context
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@Sallery-X, thank you! Check the CI. |
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alexey-milovidov
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Asan found a crash here: #100711 |
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Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):
A SQL function
obfuscateQuery. Closes #98010.Documentation entry for user-facing changes
Note
Medium Risk
Adds new user-facing SQL functions with custom determinism/LowCardinality execution behavior and per-row randomness, which could affect query planning (CSE) and reproducibility if the determinism flags are incorrect.
Overview
Adds new SQL functions
obfuscateQuery(query[, tag])and deterministicobfuscateQueryWithSeed(query, seed)that obfuscate SQL text viaParsers::obfuscateQueries, with seed selection supporting integer or string inputs and handling both string and constant string columns.Registers both functions with full FunctionDocumentation, and introduces stateless tests validating per-row randomness vs seed determinism, argument validation errors, tag type checking, column/LowCardinality behavior, and structure-preservation expectations.
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