MySQLpartitionlock

For example, a SELECT from a partitioned MyISAM table locks only those partitions actually containing rows that satisfy the SELECT statement's WHERE condition ...

MySQL enables client sessions to acquire table locks explicitly for the purpose of cooperating with other sessions for access to tables, or to prevent other ...

In MySQL 5.7, partition lock pruning eliminates unneeded locks in many cases, and most statements reading from or updating a partitioned MyISAM table cause only ...

In MySQL 5.7, partition lock pruning eliminates unneeded locks in many cases, and most statements reading from or updating a partitioned MyISAM table cause only ...

2017年8月31日 — Description: When a partition table is updated or deleted according to an index, it will lock the records in the index and the small records ...

2019年10月9日 — When adding PARTITIONing to a table, the entire table is copied over. Hence the lock. When adding a PARTITION to an already-partitioned ...

2012年8月26日 — Adding partitions - we're running on one server, and we don't have different mounts in the HDs, so we're just avoiding locks in such a solution.

2021年3月25日 — 1 Answer 1 ... The documentation you linked explicitly refers to alter table ... truncate partition ... statement, not to the alter table ... drop ...