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https://dev.mysql.com/doc/refman/5.7/en/mysqldump-copying-database.html
$> mysqldump db1 > dump.sql $> mysqladmin create db2 $> mysql db2 < dump.sql Do not use --databases on the mysqldump command line because that causes USE db1 to be included in the dump file, which overrides the effect of naming db2 on the mysql ...
https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html
character_set_database System Variable character_set_database Scope Global, Session Dynamic Yes Type String Default Value latin1 Footnote This option is dynamic, but should be set only by server. If there is no default database, the variable has the ... The MySQL server maintains many system variables that affect its ...
https://dev.mysql.com/doc/refman/5.7/en/linux-installation-yum-repo.html
Before You Start As a popular, open-source software, MySQL, in its original or re-packaged form, is widely installed on many systems from various sources, including different software download sites, software repositories, and so on. Steps for a ...
https://dev.mysql.com/doc/refman/5.7/en/upgrading-from-previous-series.html
The Performance Schema tables are intended to replace the INFORMATION_SCHEMA tables, which are deprecated as of MySQL 5.7.6 and are removed in MySQL 8.0. In MySQL 5.7.9, DYNAMIC replaces COMPACT as the implicit default row format for InnoDB tables.
https://dev.mysql.com/doc/refman/5.7/en/create-table.html
By default, tables are created in the default database, using the InnoDB storage engine. An error occurs if the table exists, if there is no default database, or if the database does not exist. This works regardless of whether there is a default ...
https://dev.mysql.com/doc/refman/5.7/en/rewriter-query-rewrite-plugin-reference.html
pattern_database The database used to match unqualified table names in statements. Qualified table names in statements match qualified names in the pattern if corresponding database and table names are identical. Unqualified table names in ...Users ...
https://dev.mysql.com/doc/refman/5.7/en/built-in-function-reference.html
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 12.2, “Loadable Function Reference”. ->> Return value ...
https://dev.mysql.com/doc/refman/5.7/en/explain-output.html
unique_subquery This type replaces eq_ref for some IN subqueries of the following form: value IN (SELECT primary_key FROM single_table WHERE some_expr) unique_subquery is just an index lookup function that replaces the subquery completely for better ... The EXPLAIN statement provides information about how MySQL executes ...
https://dev.mysql.com/doc/refman/5.7/en/myisam-key-cache.html
To minimize disk I/O, the MyISAM storage engine exploits a strategy that is used by many database management systems. Otherwise, the server chooses a cache block buffer containing a different table index block (or blocks) and replaces the data ...
https://dev.mysql.com/doc/refman/5.7/en/create-table-select.html
You can precede the SELECT by IGNORE or REPLACE to indicate how to handle rows that duplicate unique key values. With REPLACE, new rows replace rows that have the same unique key value. If neither IGNORE nor REPLACE is specified, duplicate unique ...