Aleksey Midenkov c3f35ea55a MDEV-18501 Partition pruning doesn't work for historical queries (refactoring) ...

SYSTEM_TYPE partitioning: COLUMN properties removed. Partitioning is
now pure RANGE based on UNIX_TIMESTAMP(row_end).

DECIMAL type is now allowed as RANGE partitioning, we can partition by
UNIX_TIMESTAMP() (but not for DATETIME which depends on local timezone
of course).

2019-09-01 14:04:25 +03:00

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