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https://dev.mysql.com/doc/refman/8.0/en/using-systemd.html
This script assists in creating the error log file only if the log location matches a pattern (/var/log/mysql*.log for RPM platforms, /var/log/mysql/*.log for Debian platforms). In other cases, the error log directory must be writable or the error ...If you install MySQL from a source distribution on a platform that uses systemd, obtain systemd support for MySQL by configuring the distribution using the -DWITH_SYSTEMD=1 CMake ...
https://dev.mysql.com/doc/refman/8.0/en/plugin-loading.html
Each plugin_library is the name of a library file that contains plugin code, and each name is the name of a plugin to load. Alternatively, the INSTALL PLUGIN statement causes the server to load the plugin code from the library file at runtime: ...
https://dev.mysql.com/doc/refman/8.0/en/events-status-info.html
INTO var_list statements, if the query returns no rows, a warning with error code 1329 occurs (No data), and the variable values remain unchanged. The Event Scheduler writes information about event execution that terminates with an error or warning ...See Section 27.4.6, “The Event Scheduler and MySQL Privileges” for an ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-statement-tables.html
Final instrument names correspond to server commands and SQL statements: Server commands correspond to the COM_xxx codes defined in the mysql_com.h header file and processed in sql/sql_parse.cc. Some final instrument names are specific to error ...
https://dev.mysql.com/doc/refman/8.0/en/x-plugin-options-system-variables.html
After this time, if the read operation is not successful, X Plugin closes the connection and returns a warning notice with the error code ER_IO_READ_ERROR to the client application. Important Because X Plugin is not a mandatory plugin, it does not ... To control activation of X Plugin, use this option: --mysqlx[=value] Command-Line Format --mysqlx[=value] Type Enumeration Default Value ON Valid Values ONOFFFORCEFORCE_PLUS_PERMANENT This option controls how the server loads X Plugin at ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-online-operations.html
row *************************** Level: Warning Code: 1478 Message: DYNAMIC column c4 with STORAGE DISK is not supported, column will become FIXED mysql> SHOW CREATE TABLE t1\G *************************** 1. If you attempt to add a column online ...
https://dev.mysql.com/doc/refman/8.0/en/bit-functions.html
If the argument size exceeds 511 bytes, an ER_INVALID_BITWISE_AGGREGATE_OPERANDS_SIZE error occurs. Table 14.17 Bit Functions and Operators Name Description & Bitwise AND >> Right shift << Left shift ^ Bitwise XOR BIT_COUNT() Return the number of ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-failure-handling.html
If a failure occurs during the prerequisite check, the CLONE INSTANCE operation reports an error. If the cloning operation is unable to obtain a DDL lock within the time limit specified by the clone_ddl_timeout variable, an error is reported. For ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-remote.html
An error is returned if the explicit specification cannot be satisfied. An error is reported if a table or tablespace already exists. As of MySQL 8.0.18, an error is reported if duplicate undo tablespace file names are encountered during a cloning ... The clone plugin supports the following syntax for cloning remote data; that is, cloning data from a remote MySQL server instance (the donor) and transferring it to the MySQL instance where the cloning operation was initiated (the ...
https://dev.mysql.com/doc/refman/8.0/en/data-type-defaults.html
If binary logging is enabled and binlog_format is set to STATEMENT, the statement is logged and executed but a warning message is written to the error log, because replication slaves might diverge. For nontransactional tables, an error occurs, but ... Data type specifications can have explicit or implicit default ...