The following limitations apply to the use of storage engines with user-defined partitioning of tables.
MERGE storage engine.
User-defined partitioning and the
storage engine are not compatible. Tables using the
MERGE storage engine cannot be partitioned.
Partitioned tables cannot be merged.
FEDERATED storage engine.
FEDERATED tables is not
supported; it is not possible to create partitioned
CSV storage engine.
Partitioned tables using the
engine are not supported; it is not possible to create
InnoDB storage engine.
InnoDB foreign keys and MySQL
partitioning are not compatible. Partitioned
InnoDB tables cannot have foreign key
references, nor can they have columns referenced by foreign
InnoDB tables which have or which are
referenced by foreign keys cannot be partitioned.
TABLE ... OPTIMIZE PARTITION does not work correctly
with partitioned tables that use the
storage engine. Use
ALTER TABLE ... REBUILD
ALTER TABLE ... ANALYZE
PARTITION, instead, for such tables. For more
ALTER TABLE Partition Operations.
NDB storage engine (MySQL Cluster).
LINEAR KEY) is the only type of
partitioning supported for the
NDB storage engine. It is not
possible in MySQL Cluster NDB 7.3 to create a MySQL Cluster
table using any partitioning type other than
attempting to do so fails with an error.
In addition, the maximum number of partitions that can be
defined for an
NDB table depends on
the number of data nodes and node groups in the cluster, the
version of the MySQL Cluster software in use, and other factors.
NDB and user-defined partitioning,
for more information.
The table must have an explicit primary key.
All columns listed in the table's partitioning expression must be part of the primary key.
If a user-partitioned
is created using an empty column-list (that is, using
PARTITION BY KEY() or
LINEAR KEY()), then no explicit primary key is
Upgrading partitioned tables.
When performing an upgrade, tables which are partitioned by
KEY and which use any storage engine other
NDB must be dumped and
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
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