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https://dev.mysql.com/doc/refman/8.4/en/spatial-reference-systems.html
To enable manipulation of SRS entries stored in the data dictionary, MySQL provides these SQL statements: CREATE SPATIAL REFERENCE SYSTEM: See Section 15.1.19, “CREATE SPATIAL REFERENCE SYSTEM Statement”. A spatial reference system (SRS) for ...
https://dev.mysql.com/doc/refman/8.4/en/subqueries.html
All subquery forms and operations that the SQL standard requires are supported, as well as a few features that are MySQL-specific. Here is an example of a subquery: SELECT * FROM t1 WHERE column1 = (SELECT column1 FROM t2); In this example, SELECT * ...
https://dev.mysql.com/doc/refman/8.4/en/symbolic-links.html
For InnoDB tables, use the DATA DIRECTORY clause of the CREATE TABLE statement instead of symbolic links, as explained in Section 17.6.1.2, “Creating Tables Externally”. You can move databases or tables from the database directory to other ...
https://dev.mysql.com/doc/refman/8.4/en/sys-statement-analysis.html
tmp_tables The total number of internal in-memory temporary tables created by occurrences of the statement. tmp_disk_tables The total number of internal on-disk temporary tables created by occurrences of the statement. The statement_analysis and ...
https://dev.mysql.com/doc/refman/8.4/en/tracing-example.html
Now we can examine the trace, whose first column (QUERY), containing the original statement to be traced, is shown here: SELECT * FROM INFORMATION_SCHEMA.OPTIMIZER_TRACE\G *************************** 1. row *************************** QUERY: SELECT ...
https://dev.mysql.com/doc/refman/8.4/en/trigger-metadata.html
To obtain metadata about triggers: Query the TRIGGERS table of the INFORMATION_SCHEMA database.
https://dev.mysql.com/doc/refman/8.4/en/tutorial.html
This chapter provides a tutorial introduction to MySQL by showing how to use the mysql client program to create and use a simple database. If you are interested only in accessing an existing database, you may want to skip the sections that describe ...mysql (sometimes referred to as the “terminal monitor” or just “monitor”) is an interactive program that enables you to connect to a MySQL server, run queries, and view the ...
https://dev.mysql.com/doc/refman/8.4/en/update.html
For information about generated columns, see Section 15.1.20.8, “CREATE TABLE and Generated Columns”. UPDATE is a DML statement that modifies rows in a table. An UPDATE statement can start with a WITH clause to define common table expressions ...
https://dev.mysql.com/doc/refman/8.4/en/values.html
VALUES is a DML statement which returns a set of one or more rows as a table. In other words, it is a table value constructor which also functions as a standalone SQL statement. VALUES row_constructor_list [ORDER BY column_designator] [LIMIT ...
https://dev.mysql.com/doc/refman/8.4/en/version-tokens-usage.html
These functions permit the server's list of version tokens to be created, changed, removed, and inspected: version_tokens_set() completely replaces the current list and assigns a new list. Before using Version Tokens, install it according to the ...