v.20.8Improvement

Fix Debug Assertion for Large Negative Exponent in Decimal

Official CH changelog text
Fix debug assertion when Decimal has too large negative exponent. Fixes #13188. #13228 (alexey-milovidov).
Fixes a debug assertion failure when using Decimal types with excessively large negative exponents.

Why it matters

This fix addresses a stability issue in ClickHouse where using Decimal data types that have very large negative exponents could cause an unexpected debug assertion failure, improving reliability when handling such decimal values.

How to use it

No specific user action is required. The fix is applied internally in the ClickHouse engine and users will benefit from the improved stability automatically after upgrading to the version containing this fix.

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