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https://dev.mysql.com/doc/refman/8.0/en/windows-server-first-start.html
The following sections provide more specific information for starting the MySQL server from the command line or as a Windows service. The information here applies primarily if you installed MySQL using the noinstall version, or if you wish to ...
https://dev.mysql.com/doc/refman/8.0/en/sys-format-time.html
Note As of MySQL 8.0.16, format_time() is deprecated and subject to removal in a future MySQL version. See Section 14.21, “Performance Schema Functions” Given a Performance Schema latency or wait time in picoseconds, converts it to ...Depending ...
https://dev.mysql.com/doc/refman/8.0/en/change-master-to.html
It also updates the contents of the replication metadata repositories (see Section 19.2.4, “Relay Log and Replication Metadata Repositories”). For replication channels with this setting, in-memory file positions are still tracked, and file ...] ...From MySQL 8.0.23, use CHANGE REPLICATION SOURCE TO in place of CHANGE MASTER TO, which is deprecated from that ...
https://dev.mysql.com/doc/refman/8.0/en/timezone-problems.html
If you have a problem with SELECT NOW() returning values in UTC and not your local time, you have to tell the server your current time zone. You can set the time zone for the server with the --timezone=timezone_name option to mysqld_safe. This ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-pgman-time-track-stats.html
Log wait latency (log_waits column) is the length of time a page write must wait for the undo log to be flushed, which must be done prior to each page write. This table provides information regarding the latency of disk operations for NDB Cluster ...
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-instrument-default-timed.html
Returns YES or NO to indicate whether a given Performance Schema instrument is timed by default. Example mysql> SELECT sys.ps_is_instrument_default_timed('memory/innodb/row_log_buf'); ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-conflict-resolution.html
When using the functions NDB$OLD(), NDB$MAX(), and NDB$MAX_DELETE_WIN() for timestamp-based conflict resolution (as well as NDB$MAX_INS() and NDB$MAX_DEL_WIN_INS(), beginning with NDB 8.0.30), we often refer to the column used for determining ...
https://dev.mysql.com/doc/refman/8.0/en/alter-table.html
Updates and writes to the table started after the ALTER TABLE operation begins are stalled until the new table is ready, then are automatically redirected to the new table. The exception referred to earlier is that ALTER TABLE blocks reads (not just ...To use ALTER TABLE, you need ALTER, CREATE, and INSERT privileges for the ... ALTER TABLE tbl_name [alter_option [, alter_option] ...] [partition_options] alter_option: { table_options | ADD [COLUMN] col_name column_definition [FIRST | AFTER col_name] | ADD [COLUMN] (col_name ...
https://dev.mysql.com/doc/refman/8.0/en/source-configuration-options.html
-DBUNDLE_RUNTIME_LIBRARIES=bool Whether to bundle runtime libraries with server MSI and Zip packages for Windows. To explicitly cause the server to refuse or permit LOAD DATA LOCAL statements (regardless of how client programs and libraries are ...
https://dev.mysql.com/doc/refman/8.0/en/json.html
If two values originally come from the MySQL DATETIME and TIMESTAMP types, respectively, they are equal if they represent the same point in time. Partial Updates of JSON Values In MySQL 8.0, the optimizer can perform a partial, in-place update of a ...See the description of this function, as well as Normalization, Merging, and Autowrapping of JSON Values, for examples and further ...The JSON data type ...