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https://dev.mysql.com/doc/refman/5.7/en/innodb-locking.html
If a lock request conflicts with an existing lock and cannot be granted because it would cause deadlock, an error occurs. It allows you to choose how to trade off between predictable sequences of auto-increment values and maximum concurrency for ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-logs-cluster-log.html
LCPFragmentCompleted Checkpoint 11 INFO Node node_id: ACC Blocked num_1 and TUP Blocked num_2 times last second Undo logging is blocked because the log buffer is close to overflowing. [Occurred during startphase start_phase.] [ Initiated by signal.] ... The following table lists the most common NDB cluster log ...
https://dev.mysql.com/doc/refman/5.7/en/source-configuration-options.html
Note Do not enable the WITH_TEST_TRACE_PLUGIN option if you want to use your own protocol trace plugins because only one such plugin can be loaded at a time and an error occurs for attempts to load a second one. Many options configure compile-time ... The CMake program provides a great deal of control over how you configure a MySQL source ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-porting-mysql.html
The results are already converted; # no need to repeat conversion functions and WHERE clauses each time. mysql> INSERT INTO innodb_memcache.containers (name,db_schema,db_table,key_columns,value_columns,flags,cas_column, ... Consider these aspects of ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-database-objects.html
In addition, the maximum offset for a fixed-width column of an NDB table is 8188 bytes; attempting to create a table that violates this limitation fails with NDB error 851 Maximum offset for fixed-size columns exceeded. When using the NDB storage ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-connection-attribute-tables.html
For connections initiated using the C API, the libmysqlclient library imposes a limit of 64KB on the aggregate size of connection attribute data on the client side: Calls to mysql_options() that cause this limit to be exceeded produce a ...For ...
https://dev.mysql.com/doc/refman/5.7/en/proxy-users.html
This enables the external user to be a proxy for the second user; that is, to assume the privileges of the second user: The external user is a “proxy user” (a user who can impersonate or become known as another user). The second user is a ...The ...
https://dev.mysql.com/doc/refman/5.7/en/declare-handler.html
statement handler_action: { CONTINUE | EXIT | UNDO } condition_value: { mysql_error_code | SQLSTATE [VALUE] sqlstate_value | condition_name | SQLWARNING | NOT FOUND | SQLEXCEPTION } The DECLARE ... The handler_action value indicates what action the ...HANDLER statement specifies a handler that deals with one or more ...
https://dev.mysql.com/doc/refman/5.7/en/sys-io-global-by-wait-by-bytes.html
max_latency The maximum single wait time of timed occurrences of the I/O event. These views summarize global I/O consumers to display amount of I/O and time waiting for I/O, grouped by event. total_latency The total wait time of timed occurrences ...By default, rows are sorted by descending total I/O (bytes read and ...
https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
If a TIMESTAMP or DATETIME column definition includes an explicit fractional seconds precision value anywhere, the same value must be used throughout the column definition. TIMESTAMP and DATETIME columns can be automatically initializated and ...An ...