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https://dev.mysql.com/doc/refman/8.4/en/json-attribute-functions.html
mysql> SELECT JSON_VALID('{"a": 1}'); +------------------------+ | JSON_VALID('{"a": 1}') | +------------------------+ | 1 | +------------------------+ mysql> SELECT JSON_VALID('hello'), JSON_VALID('"hello"'); ... The functions in this section ...
https://dev.mysql.com/doc/refman/8.4/en/numeric-type-syntax.html
The display width attribute is deprecated for integer data types; you should expect support for it to be removed in a future version of MySQL. If you specify ZEROFILL for a numeric column, MySQL automatically adds the UNSIGNED attribute to the ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-quick-start.html
For example, use these lines in the server my.cnf file: [mysqld] performance_schema=ON When the server starts, it sees performance_schema and attempts to initialize the Performance Schema. To verify successful initialization, use this statement: ...
https://dev.mysql.com/doc/refman/8.4/en/secure-client-programming.html
Client applications that access MySQL should use the following guidelines to avoid interpreting external data incorrectly or exposing sensitive information. Handle External Data Properly Handle MySQL Error Messages Properly Handle External Data ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/backup-sbt-history-table-update.html
Rename the original mysql.backup_sbt_history table to mysql.backup_sbt_history_old, and the mysql.backup_sbt_history_new table to mysql.backup_sbt_history. Note If you are working with a multiprimary Group Replication setting, make sure these ...
https://dev.mysql.com/doc/ndbapi/en/ndb-error-codes-node-recovery-error.html
The following list enumerates all NDB errors of type NR (Node Recovery error).
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-handling-errors.html
This program demonstrates handling errors and retrying failed transactions using the NDB API. The source code for this example can be found in storage/ndb/ndbapi-examples/ndbapi_retries/ndbapi_retries.cpp in the NDB Cluster source tree. In this ...
https://dev.mysql.com/doc/mysql-monitor/8.0/en/admin-advisors-reference.html
Note Binary log informational events were introduced in MySQL 5.6.2 and are not supported by earlier versions of MySQL. If the value of this variable is greater than 0, the MySQL server synchronizes its binary log to disk (using fdatasync()) after ...However, for performance reasons, it is recommended to run 64-bit binaries on 64-bit platforms, and 32-bit binaries on 32-bit ...
https://dev.mysql.com/doc/mysql-monitor/8.0/en/mem-troubleshooting-agent-start.html
To do this see: Windows: Section 6.5.1, “Starting/Stopping the Agent on Windows” Unix: Section 6.5.3, “Starting/Stopping the Agent on Unix” macOS: Section 6.5.2, “Starting/Stopping the Agent on macOS” Some additional tips are: To run on ... The first step in troubleshooting the agent is finding out whether it is running or ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-auto-parallel-load.html
You can load data into a MySQL HeatWave Cluster by using the Auto Parallel Load feature. Auto Parallel Load, which can be run manually from any MySQL client or connector, is implemented as a stored procedure named heatwave_load, which resides in ...