The next two sections discuss
partitioning, which are variants on
partitioning that were introduced in MySQL 5.5.0.
COLUMNS partitioning enables the use of
multiple columns in partitioning keys. All of these columns are
taken into account both for the purpose of placing rows in
partitions and for the determination of which partitions are to
be checked for matching rows in partition pruning.
In addition, both
RANGE COLUMNS partitioning
LIST COLUMNS partitioning support the use
of non-integer columns for defining value ranges or list
members. The permitted data types are shown in the following
Columns using other data types relating to dates or times are not supported as partitioning columns.
The discussions of
RANGE COLUMNS and
LIST COLUMNS partitioning in the next two
sections assume that you are already familiar with partitioning
based on ranges and lists as supported in MySQL 5.1 and later;
for more information about these, see
Section 19.2.1, “RANGE Partitioning”, and
Section 19.2.2, “LIST Partitioning”, respectively.