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https://dev.mysql.com/doc/refman/8.0/en/condition-filtering.html
It depends on a constant value or values from earlier tables in the join sequence. In join processing, prefix rows are those rows passed from one table in a join to the next. In general, the optimizer attempts to put tables with low prefix counts ...
https://dev.mysql.com/doc/refman/8.0/en/connecting-using-uri-or-key-value-pairs.html
The following methods are permissible: AUTO MYSQL41 SHA256_MEMORY FROM_CAPABILITIES FALLBACK PLAIN For X Protocol connections, any configured auth-method is overridden to this sequence of authentication methods: MYSQL41, SHA256_MEMORY, PLAIN. You ...
https://dev.mysql.com/doc/refman/8.0/en/gis-class-curve.html
A Curve is a one-dimensional geometry, usually represented by a sequence of points. Particular subclasses of Curve define the type of interpolation between points. A Curve is simple if it does not pass through the same point twice, with the ...
https://dev.mysql.com/doc/refman/8.0/en/index-merge-optimization.html
The Index Merge access method retrieves rows with multiple range scans and merges their results into one. This access method merges index scans from a single table only, not scans across multiple tables. The merge can produce unions, intersections, ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-fields-table.html
When a column is dropped, the remaining columns are reordered so that the sequence has no gaps. The INNODB_FIELDS table provides metadata about the key columns (fields) of InnoDB indexes. For related usage information and examples, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-being-deleted-table.html
This value might reflect the value of an ID column that you defined for the underlying table, or it can be a sequence value generated by InnoDB when the table contains no suitable column. The INNODB_FT_BEING_DELETED table provides a snapshot of the ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-deleted-table.html
This value might reflect the value of an ID column that you defined for the underlying table, or it can be a sequence value generated by InnoDB when the table contains no suitable column. The INNODB_FT_DELETED table stores rows that are deleted ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-profiling-table.html
SEQ A sequence number indicating the display order for rows with the same QUERY_ID value. Its contents correspond to the information produced by the SHOW PROFILE and SHOW PROFILES statements (see Section 15.7.7.30, “SHOW PROFILE Statement”). The ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-performance-ro-txn.html
InnoDB can avoid the overhead associated with setting up the transaction ID (TRX_ID field) for transactions that are known to be read-only. A transaction ID is only needed for a transaction that might perform write operations or locking reads such ...
https://dev.mysql.com/doc/refman/8.0/en/install-component.html
For subsequent server restarts, any components listed in mysql.component are loaded by the loader service during the startup sequence. [SET variable = expr [, variable = expr] ...] variable: { {GLOBAL | @@GLOBAL.} [component_prefix.]system_var_name ...