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https://dev.mysql.com/doc/refman/8.0/en/sys-statement-performance-analyzer.html
mysql> CALL sys.statement_performance_analyzer('delta', 'mydb.tmp_digests_ini', 'with_runtimes_in_95th_percentile'); +-----------------------------------------+ | Next Output | +-----------------------------------------+ | Queries with Runtime in ...
https://dev.mysql.com/doc/refman/8.0/en/windows-restrictions.html
The following restrictions apply to use of MySQL on the Windows platform: Process memory On Windows 32-bit platforms, it is not possible by default to use more than 2GB of RAM within a single process, including MySQL. Some versions of Windows have ...This is because the physical address limit on Windows 32-bit is 4GB and the default setting within Windows is to split the virtual address space between kernel (2GB) and user/applications ...
https://dev.mysql.com/doc/refman/8.0/en/internal-locking.html
Table-Level Locking MySQL uses table-level locking for MyISAM, MEMORY, and MERGE tables, permitting only one session to update those tables at a time. Options other than row-level locking: Versioning (such as that used in MySQL for concurrent ...
https://dev.mysql.com/doc/refman/8.0/en/account-names.html
MySQL account names consist of a user name and a host name, which enables creation of distinct accounts for users with the same user name who connect from different hosts. In most respects, account names are similar to MySQL role names, with some ...This section describes the syntax for account names, including special values and wildcard ...
https://dev.mysql.com/doc/refman/8.0/en/charset-collation-effect.html
latin1_swedish_ci latin1_german1_ci latin1_german2_ci Muffler Muffler Müller MX Systems Müller Muffler Müller MX Systems MX Systems MySQL MySQL MySQL The character that causes the different sort orders in this example is ü (German ...The first ...
https://dev.mysql.com/doc/refman/8.0/en/clone.html
CLONE clone_action clone_action: { LOCAL DATA DIRECTORY [=] 'clone_dir'; | INSTANCE FROM 'user'@'host':port IDENTIFIED BY 'password' [DATA DIRECTORY [=] 'clone_dir'] [REQUIRE [NO] SSL] } The CLONE statement is used to clone data locally or from a ...The 'clone_dir' directory is the full path of the local directory that data is cloned ...
https://dev.mysql.com/doc/refman/8.0/en/creating-accounts.html
To manage MySQL accounts, use the SQL statements intended for that purpose: CREATE USER and DROP USER create and remove accounts. To update the tables to the expected structure, perform the MySQL upgrade procedure. Another option for creating ...
https://dev.mysql.com/doc/refman/8.0/en/error-interfaces.html
For lists of server-side, client-side, and global (shared between server and clients) errors, see MySQL 8.0 Error Message Reference. Error information in MySQL is available in the server error log, at the SQL level, from within client programs, and ... Error messages can originate on the server side or the client side, and each error message includes an error code, SQLSTATE value, and message string, as described in Section B.1, “Error Message Sources and ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-query-expansion.html
For example, a user searching for “database” may really mean that “MySQL”, “Oracle”, “DB2”, and “RDBMS” all are phrases that should match “databases” and should be returned, too. Thus, if one of these documents contains the ... Full-text search supports query expansion (and in particular, its variant “blind query ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-deploying-locally.html
The instructions in this section are not suitable for production deployments because all MySQL server instances are running on the same single host. This section explains how to create a replication group with three MySQL Server instances on one ...