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https://dev.mysql.com/doc/refman/8.0/en/data-type-defaults.html
Data type specifications can have explicit or implicit default values. A DEFAULT value clause in a data type specification explicitly indicates a default value for a column. Examples: CREATE TABLE t1 ( i INT DEFAULT -1, c VARCHAR(10) DEFAULT '', ...
https://dev.mysql.com/doc/refman/8.0/en/disk-issues.html
This section describes ways to configure storage devices when you can devote more and faster storage hardware to the database server. For information about optimizing an InnoDB configuration to improve I/O performance, see Section 10.5.8, ...
https://dev.mysql.com/doc/refman/8.0/en/expressions.html
This section lists the grammar rules that expressions must follow in MySQL and provides additional information about the types of terms that may appear in expressions. Expression Syntax Expression Term Notes Temporal Intervals Expression Syntax The ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-boolean.html
MySQL can perform boolean full-text searches using the IN BOOLEAN MODE modifier. With this modifier, certain characters have special meaning at the beginning or end of words in the search string. In the following query, the + and - operators ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-fine-tuning.html
You can exert more control over full-text searching behavior if you have a MySQL source distribution because some changes require source code modifications. Modifying the default behavior in most cases can actually decrease effectiveness. Do not ...
https://dev.mysql.com/doc/refman/8.0/en/gone-away.html
This section also covers the related Lost connection to server during query error. The most common reason for the MySQL server has gone away error is that the server timed out and closed the connection. In this case, you normally get one of the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-cloning.html
If you want to use remote cloning operations for distributed recovery in a group, you must set up existing members and joining members beforehand to support this function. If you do not want to use this function in a group, do not set it up, in ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-network-partitioning.html
The group needs to achieve consensus whenever a change that needs to be replicated happens. This is the case for regular transactions but is also required for group membership changes and some internal messaging that keeps the group consistent.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure.html
Group Replication's failure detection mechanism is designed to identify group members that are no longer communicating with the group, and expel them as and when it seems likely that they have failed. Having a failure detection mechanism increases ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-trx-table.html
The INNODB_TRX table provides information about every transaction currently executing inside InnoDB, including whether the transaction is waiting for a lock, when the transaction started, and the SQL statement the transaction is executing, if any.