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ClickHouseยฎ is a real-time analytics database management system
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Click House v26.3.5.12-lts

Click House: v26.3.5.12-lts Release

Release date:
April 8, 2026
Previous version:
v26.3.4.11-lts (released April 6, 2026)
Magnitude:
9 Diff Delta
Contributors:
2 total committers
Data confidence:
Commits:
12 impacting commits

22 Features Released with v26.3.5.12-lts

Fix insert-select from delta lake cluster with replicated merge tree
#101299
Defer dedup data hash computation to eliminate squashing overhead
#101494
Bump MongoDB driver
#101655
Fix heap-buffer-overflow in `leftPad/rightPad` functions
#101951
Optimize fs cache loading on server startup
#101500
Fix UDF registry loss during Keeper session expiry
#101891
Fix startup dependency order for materialized views with inner tables
#100946
Fix wrong results in JOIN with shard-by-PK and query condition cache
#100926
Fix use-after-scope in parallel Object type deserialization
#101823
`formatDateTime`: Treat `%W` unconditionally as a variable-length formatter
#101847
Backport #100926 to 26.3: Fix wrong results in JOIN with shard-by-PK and query condition cache
#101962
Backport #100946 to 26.3: Fix startup dependency order for materialized views with inner tables
#101987
Backport #101500 to 26.3: Optimize fs cache loading on server startup
#101949
Backport #101494 to 26.3: Defer dedup data hash computation to eliminate squashing overhead
#101736
Extend argument validation in `splitByString` tokenizer
#101928
Backport #101951 to 26.3: Fix heap-buffer-overflow in `leftPad/rightPad` functions
#102088
Backport #101928 to 26.3: Extend argument validation in `splitByString` tokenizer
#102094
Backport #101847 to 26.3: `formatDateTime`: Treat `%W` unconditionally as a variable-length formatter
#102102
Backport #101655 to 26.3: Bump MongoDB driver
#102140
Backport #101823 to 26.3: Fix use-after-scope in parallel Object type deserialization
#102076
Backport #101299 to 26.3: Fix insert-select from delta lake cluster with replicated merge tree
#101563
Backport #101891 to 26.3: Fix UDF registry loss during Keeper session expiry
#102030

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Top Contributors in v26.3.5.12-lts

robot-clickhouse
CheSema

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