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https://dev.mysql.com/doc/relnotes/connector-python/en/news-8-1-0.html
Closing a connection multiple times could cause a fatal deallocation error in Connector/Python 8.0.33. (Bug #110879, Bug #35349093) An error was raised when setting the database name on a connection that included non-alphanumeric characters. (Bug ...
https://dev.mysql.com/doc/refman/8.4/en/x-plugin-status-variables.html
Mysqlx_sessions_fatal_error The number of sessions that have closed with a fatal error. Mysqlx_aborted_clients The number of clients that were disconnected because of an input or output error. Mysqlx_cursor_close The number of cursor-close messages ...Mysqlx_address The network address or addresses for which X Plugin accepts TCP/IP ...
https://dev.mysql.com/doc/mysql-cluster-manager/8.4/en/mcm-change-log-level.html
Accepted values for log_level are the same as for the level option: one of debug, note, info, warning, error, system, or fatal. This has the same effect as using the logger level option; however, unlike the option, this command can be used at run ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-blobs-ndbrecord.html
*/ if (-1 == myBlobHandle->setPos(pos)) APIERROR(myBlobHandle->getNdbError()); if (-1 == myBlobHandle->readData(buffer, chunk_length)) APIERROR(myBlobHandle->getNdbError()); int res= myTrans->execute(NdbTransaction::NoCommit); if (-1 == res) ...*/ ... This example illustrates the manipulation of a blob column in the NDB API using the NdbRecord ...
https://dev.mysql.com/doc/ndbapi/en/ndb-ndb.html
Signature int pollEvents ( int maxTimeToWait, Uint64* latestGCI = 0 ) Parameters This method takes the two parameters listed here: The maximum time to wait, in milliseconds, before “giving up” and reporting that no events were available (that ...
https://dev.mysql.com/doc/mysql-secure-deployment-guide/8.0/en/secure-deployment-user-accounts.html
A global automatic password expiration policy is defined using the default_password_lifetime system variable. To have passwords automatically expire after a specified number of days, add an entry similar to this under the [mysqld] option group in ...
https://dev.mysql.com/doc/internals/en/binary-log-versions.html
create_timestamp The creation timestamp, if nonzero, is the time in seconds when this event was created; it indicates the moment when the binary log was created. This field is actually of no value: If nonzero, it is redundant because it has the same ... There are several versions of the binary log file format: v1: Used in MySQL 3.23 v3: Used in MySQL 4.0.2 though 4.1 v4: Used in MySQL 5.0 and up A v2 format was used briefly (in early MySQL 4.0.x versions), but it is obsolete and no longer ...
https://dev.mysql.com/doc/ndbapi/en/mccj-using-clusterj-operations.html
In addition, queries are optimized to detect whether columns of the primary key are specified as part of the query criteria, and if so, a primary key lookup or scan is executed as a strategy to implement the query. For some operations—find, ...To ...
https://dev.mysql.com/doc/internals/en/transformation-scalar-in.html
Item_ref is used to point to <left_expression cache>, because at the time of transformation we know only the address of the variable where the cache pointer will be stored. To rewrite a scalar IN subquery, the ...
https://dev.mysql.com/doc/internals/en/myisam-column-attributes.html
This is stored as seconds: days*24*3600+hours*3600+minutes*60+seconds Example: a TIME column containing '1 02:03:04' (1 day 2 hour 3 minutes and 4 seconds) looks like: hexadecimal 58 6E 01 TIMESTAMP Storage: 4 bytes, low byte first. Stored as unix ...(If they don't fit, that's an error in strict mode.) Trailing spaces are not significant in comparisons ...