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https://dev.mysql.com/doc/refman/8.0/en/replication-features-differing-tables.html
Between any of the decimal types DECIMAL, FLOAT, DOUBLE, and NUMERIC. FLOAT to DOUBLE is a non-lossy conversion; DOUBLE to FLOAT can only be handled lossily. Source and target tables for replication do not have to be identical. A table on the ...
https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html
Multiple-line string literals enclosed within either single quote (') or double quote (") characters. secondary_engine_cost_threshold Introduced 8.0.16 System Variable secondary_engine_cost_threshold Scope Session Dynamic Yes SET_VAR Hint Applies ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-legacy-filtering.html
If the variable value itself is quoted with single quotes, double each inner single quote or escape it with a backslash. Note This section describes legacy audit log filtering, which applies if the audit_log plugin is installed without the ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-logging-configuration.html
For the query time, longlong outputs the value in microseconds, and double outputs the value in seconds. This section describes how to configure audit logging characteristics, such as the file to which the audit log plugin writes events, the format ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-options-variables.html
During a cloning operation, the number of threads increases incrementally toward a target of double the current thread count. If there is at least a 25% improvement after reaching the target, the process continues toward a new target of double the ... This section describes the system variables that control operation of the clone ...
https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html
If at least one argument is double precision, they are compared as double-precision values. Table 14.4 Comparison Operators Name Description > Greater than operator >= Greater than or equal operator < Less than operator <>, != Not equal operator <= ...
https://dev.mysql.com/doc/refman/8.0/en/flow-control-functions.html
The return type of a CASE expression result is the aggregated type of all result values: If all types are numeric, the aggregated type is also numeric: If at least one argument is double precision, the result is double precision. The second syntax ...
https://dev.mysql.com/doc/refman/8.0/en/glossary.html
(In InnoDB, the doublewrite buffer assists with durability.) See Also atomic, commit, concurrency, doublewrite buffer, isolation level, locking, rollback, transaction. Many other database systems use double quotation marks (") around such special ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-views-table.html
For example, you might use the ANSI SQL mode to ensure MySQL correctly interprets the standard SQL concatenation operator, the double bar (||), in your queries. You must have the SHOW VIEW privilege to access this table. The VIEWS table has these ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-undo-tablespaces.html
To handle aggressive growth, the file extension size is doubled if the previous file extension happened less than 0.1 seconds earlier. Doubling of the extension size can occur multiple times to a maximum of 256MB. Undo tablespaces contain undo ...