3415
MariaDBERRORNotablePartitioningHIGH confidence
Partition pruning not applicable for subpartitions
Production Risk
Low — query fails; no data is returned.
How to reproduce
trigger — this will error
trigger — this will error
SELECT * FROM t PARTITION (sp0);
expected output
ERROR 3415 (HY000): Partition pruning is not applicable for subpartitions.
Fix
Select top-level partition instead
Select top-level partition instead
SELECT * FROM t PARTITION (p0);
Why this works
Top-level partition selection is supported; subpartition direct selection requires the composite partition@subpartition syntax.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3415 ER_PARTITION_PRUNING_NOT_APPLICABLE_FOR_SUBPARTITIONS
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