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https://dev.mysql.com/doc/refman/8.0/en/problems-with-null.html
Under certain conditions, if you insert NULL into a TIMESTAMP column, the current date and time is inserted; this behavior depends in part on the server SQL mode (see Section 7.1.11, “Server SQL Modes”) as well as the value of the ... The ...
https://dev.mysql.com/doc/refman/8.0/en/programs-development.html
This works well for programs that use the last instance of an option that is specified multiple times. This section describes some utilities that you may find useful when developing MySQL programs. In shell scripts, you can use the ...
https://dev.mysql.com/doc/refman/8.0/en/proxy-users.html
At connect time, proxy_user must represent a valid externally authenticated MySQL user, and proxied_user must represent a valid locally authenticated user. For example, if a client authenticates through the ''@'' proxy account, this variable is set ...The plugin that authenticates a given connection may request that the connecting (external) user be treated as a different user for privilege-checking ...
https://dev.mysql.com/doc/refman/8.0/en/purge-binary-logs.html
PURGE { BINARY | MASTER } LOGS { TO 'log_name' | BEFORE datetime_expr } The binary log is a set of files that contain information about data modifications made by the MySQL server. Examples: PURGE BINARY LOGS TO 'mysql-bin.010'; PURGE BINARY LOGS ...The log consists of a set of binary log files, plus an index file (see Section 7.4.4, “The Binary ...
https://dev.mysql.com/doc/refman/8.0/en/query-attributes.html
Do so using this statement: INSTALL COMPONENT "file://component_query_attributes"; Component installation is a one-time operation that need not be done per server startup. The most visible part of an SQL statement is the text of the statement. As ...
https://dev.mysql.com/doc/refman/8.0/en/recovery-from-backups.html
| mysql For more information about using mysqlbinlog to process binary log files, see Section 9.5, “Point-in-Time (Incremental) Recovery”. Now, suppose that we have a catastrophic unexpected exit on Wednesday at 8 a.m. To recover, first we ...
https://dev.mysql.com/doc/refman/8.0/en/replica-io-thread-states.html
This can last for a long time if the source is idle. If the wait lasts for replica_net_timeout or slave_net_timeout seconds, a timeout occurs. The following list shows the most common states you see in the State column for a replication I/O ...
https://dev.mysql.com/doc/refman/8.0/en/replica-logs-relaylog.html
On a Unix system, this can be done as shown here: $> cat new_relay_log_name.index >> old_relay_log_name.index $> mv old_relay_log_name.index new_relay_log_name.index A replica server creates a new relay log file under the following conditions: Each ... The relay log, like the binary log, consists of a set of numbered files containing events that describe database changes, and an index file that contains the names of all used relay log ...
https://dev.mysql.com/doc/refman/8.0/en/replica-logs-status.html
Execution of any statement requiring a write lock on either or both of the slave_master_info and slave_relay_log_info tables is disallowed while replication is ongoing (although statements that perform only reads are permitted at any time). A ...
https://dev.mysql.com/doc/refman/8.0/en/replication-binlog-encryption-key-rotation.html
When binary log encryption is enabled, you can rotate the binary log master key at any time while the server is running by issuing ALTER INSTANCE ROTATE BINLOG MASTER KEY. You can rotate the binary log master key on a regular basis to comply with ...