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https://dev.mysql.com/doc/refman/8.4/en/group-replication-change-primary.html
You can specify a timeout from 1 to 3600 seconds (60 minutes) for transactions that are running when you use the function. When this is done, the current primary becomes a read-only secondary, and the specified group member becomes the read/write ...
https://dev.mysql.com/doc/refman/8.4/en/optimizer-statistics.html
The column_statistics data dictionary table stores histogram statistics about column values, for use by the optimizer in constructing query execution plans. The table is persistent so that column statistics need not be created each time the server ...The column_statistics table has these characteristics: The table contains statistics for columns of all data types except geometry types (spatial data) and ...
https://dev.mysql.com/doc/refman/8.4/en/char.html
If strict SQL mode is not enabled and you assign a value to a CHAR or VARCHAR column that exceeds the column's maximum length, the value is truncated to fit and a warning is generated. For example, a CHAR(255) column can exceed 768 bytes if the ...
https://dev.mysql.com/doc/connectors/en/connector-j-connp-props-x-protocol-and-x-devapi.html
Since Version 8.0.22 xdevapi.connect-timeout X DevAPI-specific timeout, in milliseconds, for socket connect, with "0" being no timeout. If 'xdevapi.connect-timeout' is not set explicitly and 'connectTimeout' is, 'xdevapi.connect-timeout' takes up ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-connections-pages-locking.html
Blocking Trx Age How long the blocking transaction has been executing, as a TIME value. Blocking Trx Started The time at which the blocking transaction started. Wait Age How long the lock has been waited for, as a TIME value. Waiting Trx Age How ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-blobs-basic.html
*/ const NdbDictionary::Dictionary *myDict= myNdb->getDictionary(); const NdbDictionary::Table *myTable= myDict->getTable("api_blob"); if (myTable == NULL) APIERROR(myDict->getNdbError()); NdbTransaction *myTrans= myNdb->startTransaction(); if ...*/ ... This example illustrates the manipulation of a blob column in the NDB ...
https://dev.mysql.com/doc/connectors/en/connector-net-tutorials-entity-framework-databinding-linq-entities.html
Figure 4.18 Placed GridView Control At this point it is recommended that you save your solution, and build the solution to ensure that there are no errors. In this tutorial you create an ASP.NET web page that binds LINQ queries to entities using ...
https://dev.mysql.com/doc/connector-net/en/connector-net-tutorials-entity-framework-databinding-linq-entities.html
Figure 6.18 Placed GridView Control At this point it is recommended that you save your solution, and build the solution to ensure that there are no errors. In this tutorial you create an ASP.NET web page that binds LINQ queries to entities using ...
https://dev.mysql.com/doc/ndbapi/en/ndb-ndboperation.html
DefaultAbortOption The AbortOption value is set according to the operation type: Read operations: AO_IgnoreOnError Scan takeover or DML operations: AbortOnError See NdbTransaction::execute(), for more information. For other error codes, the behavior ...It is used as an argument to the execute() method—see NdbTransaction::execute(), for more ...Beginning with NDB ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-events-statements-current-table.html
For discussion of picoseconds as the unit for event times and factors that affect time values, see Section 29.4.1, “Performance Schema Event Timing”. This value is computed in microseconds but normalized to picoseconds for easier comparison with ...For example, the events_statements_history and events_statements_history_long tables are collections of the most recent statement events that have ended, up to a maximum number of rows per thread and globally across all threads, ...