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https://dev.mysql.com/doc/refman/5.7/en/table-locking.html
But because only one session can write to a table at any one time, for best performance with these other storage engines, use them primarily for tables that are queried often and rarely inserted into or updated. Splitting table contents into ...
https://dev.mysql.com/doc/refman/5.7/en/testing-server.html
After the data directory is initialized and you have started the server, perform some simple tests to make sure that it works satisfactorily. This section assumes that your current location is the MySQL installation directory and that it has a bin ...
https://dev.mysql.com/doc/refman/5.7/en/tutorial.html
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 results. mysql may also be used in batch mode: you place your ...
https://dev.mysql.com/doc/refman/5.7/en/union.html
UNION queries with an aggregate function in an ORDER BY clause are rejected with an ER_AGGREGATE_ORDER_FOR_UNION error. [UNION [ALL | DISTINCT] SELECT ...] UNION combines the result from multiple SELECT statements into a single result set. Selected ...
https://dev.mysql.com/doc/refman/5.7/en/update.html
UPDATE is a DML statement that modifies rows in a table. Single-table syntax: UPDATE [LOW_PRIORITY] [IGNORE] table_reference SET assignment_list [WHERE where_condition] [ORDER BY ...] [LIMIT row_count] value: {expr | DEFAULT} assignment: col_name = ...
https://dev.mysql.com/doc/refman/5.7/en/using-innodb-tables.html
When selecting primary key columns, choose columns with the following characteristics: Columns that are referenced by the most important queries. InnoDB tables are created using the CREATE TABLE statement; for example: CREATE TABLE t1 (a INT, b ...
https://dev.mysql.com/doc/refman/5.7/en/verifying-index-usage.html
Always check whether all your queries really use the indexes that you have created in the tables. Use the EXPLAIN statement, as described in Section 8.8.1, “Optimizing Queries with EXPLAIN”.
https://dev.mysql.com/doc/refman/5.7/en/what-is-mysql.html
MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by Oracle Corporation. The MySQL website (http://www.mysql.com/) provides the latest information about MySQL software. It may be anything ...
https://dev.mysql.com/doc/refman/5.7/en/workbench.html
As well as enabling you to configure connection parameters, MySQL Workbench provides the capability to execute SQL queries on the database connections using the built-in SQL Editor. MySQL Workbench provides a graphical tool for working with MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/adding-character-set.html
This section discusses the procedure for adding a character set to MySQL. The proper procedure depends on whether the character set is simple or complex: If the character set does not need special string collating routines for sorting and does not ...