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The following limitations apply to partitioning in MariaDB:
- Currently, queries are never parallelized, even when they involve multiple partitions.
- A table can only be partitioned if the storage engine supports partitioning.
- All partitions must use the same storage engine. For a workaround, see Using CONNECT - Partitioning and Sharding.
- A partitioned table cannot contain, or be referenced by, foreign keys.
- The query cache is not aware of partitioning and partition pruning. Modifying a partition will invalidate the entries related to the whole table.
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