The following limitations apply to the use of storage engines with user-defined partitioning of tables.
MERGE storage engine.
User-defined partitioning and the MERGE
storage engine are not compatible. Tables using the
MERGE storage engine cannot be partitioned.
Partitioned tables cannot be merged.
FEDERATED storage engine.
Partitioning of FEDERATED tables is not
supported; it is not possible to create partitioned
FEDERATED tables.
CSV storage engine.
Partitioned tables using the CSV storage
engine are not supported; it is not possible to create
partitioned CSV tables.
Upgrading partitioned tables.
When performing an upgrade, tables which are partitioned by
KEY must be dumped and reloaded.
Same storage engine for all partitions. All partitions of a partitioned table must use the same storage engine and it must be the same storage engine used by the table as a whole. In addition, if one does not specify an engine on the table level, then one must do either of the following when creating or altering a partitioned table:
Do not specify any engine for any partition or subpartition
Specify the engine for all partitions or subpartitions