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Key branches

• 1C v.18. Includes parallel temp tables
• 1C v.17
• Parallel Temp Tables v.18
• ICU speedup. An attempt to make it faster.
• Batch Logical Replication
• Estimate By Index. An attempt to employ indexes in the optimiser.
• Smart sublink pullup. Transforming SubLink to JOIN do it smarter: for the outer part of the SEMI JOIN, use only a minimal set of relations referenced in the SubLink description. version for PG18 is attached.
• date_func transform, v.18. Transforms the equivalence between TIMESTAMP and DATE into a range inequality, v18-full.
• Prioritise Plan Cache Options
• Vondra's bloom filter v.18
• Heaptrack master
• Reduce planner's memory consumption master, v.18 1C
• Parallel Hash Aggregate master

Polymorphic References Resolution

• Lazy Join master, v.18, old v18, discussion
• Force Bounded Sort, v18, v18-1C, discussion.
• Extend Collapse Limit, v18