Technical Advisory 71002

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Publication date: October 7, 2021


A bug was introduced in CockroachDB v21.1.9 that causes the database to drop WHERE predicates from prepared statements in specific circumstances.

The bug can only be triggered when a prepared statement references a boolean column in top-level AND clauses in WHERE clauses or JOIN … ON clauses. In such statements, it is possible for the part of the filter referencing the boolean column, or any other child of an adjacent AND expression to be omitted during execution.

Only CockroachDB version 21.1.9 is affected by this bug.


This bug was resolved in CockroachDB by PR 71035. The fix has been applied to CockroachDB 21.1.10. This public issue is tracked by 71002.


Users of CockroachDB 21.1.9 are encouraged to upgrade to 21.1.10 or a later version.


Users who ran prepared statements with WHERE clauses and JOIN .. ON clauses that contained references to a boolean column in top-level AND expressions could have gotten incorrect query results, caused by incorrect omission of parts of the filter.

Please reach out to the support team if you need more information or assistance.

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