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MDEV-38864
Use mmap for MEMORY engine allocations
optimize store_record/restore_record to use aligned copy
High rate of index_lock_upgrades due to btr_cur_need_opposite_intention() mostly returning true
Optimizer Trace Replay: Q1 2026 Dev Sprint Work 2
Refactor: clean up THD::decide_logging_format() checks
Optimizer Trace Replay: Q1 2026 Dev Sprint Work 3
Debugging help: print which MEM_ROOT the object is on
MDEV-37330 : performance evaluation
Reduce THD size by refactoring THD::ha_data
Optimizer Trace Replay: Q1 2026 Dev Sprint Work 1
Optimizer Trace: Q1 2026 Dev fixes
FULL JOIN Algorithm
COALESCE() Columns for NATURAL FULL JOIN
XMLTYPE: methods - step 2
Further hasher performance improvement following MDEV-9826
Focus the pick-a-task wording in CONTRIBUTING.md
Consolidate replica-side event group filtering
Rename cloning functions of class Item and descendants
FULL OUTER JOIN Constant table detection
FULL OUTER JOIN get correct sargable condition
Remove Type_handler::Column_definition_fix_attributes()
Create a Draft for getting VIDEX documented
Consider generating random MAC address for spider unique id when my_gethwaddr call fails
rewrite Item_subselect::recalc_used_tables
Updates to SELECT_LEX::merge_subquery
Call Item_field::fix_outer_field only on first execution
check performance of allocation of big blocks by mem_root under windows
Study BINLOG SQL Rows Event Code Path for Slave Replay Inconsistencies
Remove pull_request_template.md
Debugging functions
Optimize reads for wide tables reading only IS_NULL flag
Optimization: short-cut SELECT with aggregation if HAVING has turned false
Remove parser usage from InnoDB Dictionary table
Remove parser from InnoDB statistics
mtr should fail for warnings and missing result files
Refactoring: Change Item_save_in_value() not to return SQL NULL
Remove deprecated hashicorp_key_management_cache_timeout and hashicorp_key_management_use_cache_on_timeout
Write binlog row events for changes done by cascading FK operations
Upgrade RocksDB to C++17
Create a script to convert old-style EXPLAIN FORMAT=JSON output
Q1 2026 release merge
Extend Binlog-in-Engine with Semi-sync Support
Make @@new_mode more developer/merge friendly
FULL OUTER JOIN Allowed JOIN Orders
Refactoring: Change sp_type_def_composite2::m_def from Spvar_definition* to Spvar_definition
Refactor Type_extra_attributes: change void* for generic attributes to a stricter type
MariaDB Repo for Fedora 43, OpenSuse 16, Debian 13 Trixie, Ubuntu 25.10
Optional_metadata_fields Replace std::vector with MariaDB Types
Prevent elimination of tables in a FULL OUTER JOIN
Slow query enable needs session reconnections