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https://dev.mysql.com/doc/refman/8.4/en/window-functions-named-windows.html
Windows can be defined and given names by which to refer to them in OVER clauses. If present in a query, the WINDOW clause falls between the positions of the HAVING and ORDER BY clauses, and has this syntax: WINDOW window_name AS (window_spec) [, ...
https://dev.mysql.com/doc/refman/8.4/en/windows-restrictions.html
The following restrictions apply to use of MySQL on the Windows platform: Process memory On Windows 32-bit platforms, it is not possible by default to use more than 2GB of RAM within a single process, including MySQL. This is because the physical ...
https://dev.mysql.com/doc/refman/8.4/en/windows-start-service.html
To make it easier to invoke MySQL programs, you can add the path name of the MySQL bin directory to your Windows system PATH environment variable: On the Windows desktop, right-click the My Computer icon, and select Properties. Next select the ...
https://dev.mysql.com/doc/refman/8.4/en/working-with-null.html
The NULL value can be surprising until you get used to it. Conceptually, NULL means “a missing unknown value” and it is treated somewhat differently from other values. In MySQL, 0 or NULL means false and anything else means true. This special ...
https://dev.mysql.com/doc/refman/8.4/en/x-plugin-connection-compression.html
The default compression levels used by X Plugin in MySQL 8.4 have been selected through performance testing as being a good trade-off between compression time and network transit time. When message compression is in use, the session ... X Plugin ...
https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-1.html
In addition, settings for this variable were not reflected in the output of SHOW VARIABLES or SELECT. (Bug #112676, Bug #114200, Bug #35894664, Bug #36361834) InnoDB: SELECT ... For a SELECT with ORDER BY and LIMIT, the optimizer first chose a full ...It was removed due to a critical issue that could stop the server from restarting following the creation of a very large number of tables (8001 or ...
https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-4.html
(Bug #116334, Bug #37161583) In MySQL 8.0 and later, queries of the form SELECT DISTINCT ... FROM t1 WHERE NOT IN(SELECT ...) were transformed into an antijoin if possible, causing the optimizer not to choose a group skip scan for table t1 whereas ... Account Management Notes C API Notes Character Set Support Compilation Notes Component Notes Firewall Notes Installation Notes Optimizer Notes Performance Schema Notes Functionality Added or Changed Bugs Fixed Account Management Notes The database cache was not flushed properly following execution of DROP ...
https://dev.mysql.com/doc/c-api/8.4/en/c-api-multiple-queries.html
By default, mysql_real_query() and mysql_query() interpret their statement string argument as a single statement to be executed, and you process the result according to whether the statement produces a result set (a set of rows, as for SELECT) or ...MySQL also supports the execution of a string containing multiple statements separated by semicolon (;) ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-num-fields.html
This enables the client program to take proper action without knowing whether the query was a SELECT (or SELECT-like) statement. unsigned int mysql_num_fields(MYSQL_RES *result) To pass a MYSQL* argument instead, use unsigned int ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-real-escape-string-quote.html
unsigned long mysql_real_escape_string_quote(MYSQL *mysql, char *to, const char *from, unsigned long length, char quote) Description This function creates a legal SQL string for use in an SQL statement. The mysql argument must be a valid, open ...