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https://dev.mysql.com/doc/refman/8.4/en/spatial-convenience-functions.html
The functions in this section provide convenience operations on geometry values. Unless otherwise specified, functions in this section handle their geometry arguments as follows: If any argument is NULL, the return value is NULL. If any geometry ...
https://dev.mysql.com/doc/refman/8.4/en/spatial-relation-functions-object-shapes.html
The OpenGIS specification defines the following functions to test the relationship between two geometry values g1 and g2, using precise object shapes. The return values 1 and 0 indicate true and false, respectively, except that distance functions ...
https://dev.mysql.com/doc/mysql-errors/8.4/en/server-error-reference.html
The MySQL server writes some error messages to its error log, and sends others to client programs. Example server-side error messages written to the error log: 2018-10-28T13:01:32.735983Z 0 [Note] [MY-010303] [Server] Skipping generation of SSL ...
https://dev.mysql.com/doc/internals/en/debug-sync-facility.html
MySQL supports a Debug Sync Facility, which - in spite of the "debug" in its name - is completely independent from the DBUG facility (except that it uses DBUG to trace its operation, if DBUG is also configured in the server). The documentation here ...
https://dev.mysql.com/doc/refman/8.4/en/glossary.html
These terms are commonly used in information about the MySQL database server. Files with this extension are always included in backups produced by the mysqlbackup command of the MySQL Enterprise Backup product. Files with this extension are always ...
https://dev.mysql.com/doc/internals/en/generating-browsable-binary-log-information.html
Source files in the sql directory of a MySQL source tree or source distribution contain comments that can be processed with doxygen to generate HTML files that describe classes, files, and so forth. To generate the HTML files and view information ...
https://dev.mysql.com/doc/internals/en/x-protocol-messages-messages.html
Topics in this section: Message Structure Message Sequence Common Messages Connection Session Expectations CRUD SQL Result Sets Expressions Data Types This section provides detailed information about how X Protocol defines messages. Message ...
https://dev.mysql.com/doc/refman/8.4/en/mysqlbinlog.html
The server's binary log consists of files containing “events” that describe modifications to database contents. To display their contents in text format, use the mysqlbinlog utility. You can also use mysqlbinlog to display the contents of relay ...
https://dev.mysql.com/doc/refman/8.4/en/type-conversion.html
When an operator is used with operands of different types, type conversion occurs to make the operands compatible. For example, MySQL automatically converts strings to numbers as necessary, and vice versa. mysql> SELECT 1+'1'; -> 2 mysql> SELECT ...
https://dev.mysql.com/doc/refman/8.4/en/gis-linestring-property-functions.html
You can extract particular points of a LineString, count the number of points that it contains, or obtain its length. Unless otherwise specified, functions in this section handle their geometry arguments as follows: If any argument is NULL or any ...