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https://dev.mysql.com/doc/refman/8.4/en/charset-collation-implementations.html
MySQL implements several types of collations: Simple collations for 8-bit character sets This kind of collation is implemented using an array of 256 weights that defines a one-to-one mapping from character codes to weights. It is a case-insensitive ...
https://dev.mysql.com/doc/refman/8.4/en/charset-collation-information-schema.html
String columns in INFORMATION_SCHEMA tables have a collation of utf8mb3_general_ci, which is case-insensitive. However, for values that correspond to objects that are represented in the file system, such as databases and tables, searches in ...
https://dev.mysql.com/doc/refman/8.4/en/constant-folding-optimization.html
Comparisons between constants and column values in which the constant value is out of range or of the wrong type with respect to the column type are now handled once during query optimization rather row-by-row than during execution. The comparisons ...
https://dev.mysql.com/doc/refman/8.4/en/create-table-ndb-comment-options.html
NDB_COLUMN Options NDB_TABLE Options It is possible to set a number of options specific to NDB Cluster in the table comment or column comments of an NDB table. Table-level options for controlling read from any replica and partition balance can be ...
https://dev.mysql.com/doc/refman/8.4/en/dbug-package.html
The MySQL server and most MySQL clients are compiled with the DBUG package originally created by Fred Fish. When you have configured MySQL for debugging, this package makes it possible to get a trace file of what the program is doing. This section ...
https://dev.mysql.com/doc/refman/8.4/en/fulltext-natural-language.html
By default or with the IN NATURAL LANGUAGE MODE modifier, the MATCH() function performs a natural language search for a string against a text collection. A collection is a set of one or more columns included in a FULLTEXT index. For each row in the ...
https://dev.mysql.com/doc/refman/8.4/en/gis-point-property-functions.html
A Point consists of X and Y coordinates, which may be obtained using the ST_X() and ST_Y() functions, respectively. These functions also permit an optional second argument that specifies an X or Y coordinate value, in which case the function result ...
https://dev.mysql.com/doc/refman/8.4/en/gtid-functions.html
The functions described in this section are used with GTID-based replication. It is important to keep in mind that all of these functions take string representations of GTID sets as arguments. As such, the GTID sets must always be quoted when used ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-views-table.html
You must have the SHOW VIEW privilege to access this table. The VIEWS table has these columns: TABLE_CATALOG The name of the catalog to which the view belongs. TABLE_SCHEMA The name of the schema (database) to which the view belongs. VIEW_DEFINITION ...
https://dev.mysql.com/doc/refman/8.4/en/json-table-functions.html
This section contains information about JSON functions that convert JSON data to tabular data. JSON_TABLE(expr, path COLUMNS (column_list) [AS] alias) Extracts data from a JSON document and returns it as a relational table having the specified ...