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https://dev.mysql.com/doc/refman/8.4/en/problems-with-mysql-sock.html
The default location for the Unix socket file that the server uses for communication with local clients is /tmp/mysql.sock. (For some distribution formats, the directory might be different, such as /var/lib/mysql for RPMs.) On some versions of ...
https://dev.mysql.com/doc/refman/8.4/en/processlist-access.html
The following discussion enumerates the sources of process information, the privileges required to see process information, and describes the content of process list entries. The other sources have negative performance consequences because they ...
https://dev.mysql.com/doc/refman/8.4/en/query-attributes.html
The most visible part of an SQL statement is the text of the statement. Clients can also define query attributes that apply to the next statement sent to the server for execution: Attributes are defined prior to sending the statement. Attributes ...
https://dev.mysql.com/doc/refman/8.4/en/range-optimization.html
The range access method uses a single index to retrieve a subset of table rows that are contained within one or several index value intervals. The following sections describe conditions under which the optimizer uses range access. Additionally, for ...
https://dev.mysql.com/doc/refman/8.4/en/reloading-sql-format-dumps.html
To reload a dump file written by mysqldump that consists of SQL statements, use it as input to the mysql client.
https://dev.mysql.com/doc/refman/8.4/en/replication-features-reserved-words.html
You can encounter problems when you attempt to replicate from an older source to a newer replica and you make use of identifiers on the source that are reserved words in the newer MySQL version running on the replica. For example, a table column ...
https://dev.mysql.com/doc/refman/8.4/en/replication-options-binary-log.html
Used in combination with binary log group commit, this prevents the commit rate of a single transaction being a bottleneck to throughput, and might therefore produce a performance improvement. Startup Options Used with Binary Logging System ...
https://dev.mysql.com/doc/refman/8.4/en/roles.html
Like user accounts, roles can have privileges granted to and revoked from them. A user account can be granted roles, which grants to the account the privileges associated with each role. This enables assignment of sets of privileges to accounts and ...
https://dev.mysql.com/doc/refman/8.4/en/scalar-subqueries.html
In its simplest form, a subquery is a scalar subquery that returns a single value. A scalar subquery is a simple operand, and you can use it almost anywhere a single column value or literal is legal, and you can expect it to have those ...
https://dev.mysql.com/doc/refman/8.4/en/select.html
Consequently, using a locking clause without OF tbl_name in combination with another locking clause returns an error. SELECT [ALL | DISTINCT | DISTINCTROW ] [HIGH_PRIORITY] [STRAIGHT_JOIN] [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT] ...