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https://dev.mysql.com/doc/refman/5.7/en/show-index.html
SHOW {INDEX | INDEXES | KEYS} {FROM | IN} tbl_name [{FROM | IN} db_name] [WHERE expr] SHOW INDEX returns table index information. This statement requires some privilege for any column in the table. row *************************** Table: city ...
https://dev.mysql.com/doc/refman/5.7/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/5.7/en/windows-choosing-package.html
For MySQL 5.7, there are multiple installation package formats to choose from when installing MySQL on Windows. The package formats described in this section are: MySQL Installer MySQL noinstall ZIP Archives MySQL Docker Images Program Database ...
https://dev.mysql.com/doc/refman/5.7/en/blackhole-storage-engine.html
The BLACKHOLE storage engine acts as a “black hole” that accepts data but throws it away and does not store it. To examine the source for the BLACKHOLE engine, look in the sql directory of a MySQL source distribution. When you create a ...
https://dev.mysql.com/doc/refman/5.7/en/charset-collation-coercibility.html
In the great majority of statements, it is obvious what collation MySQL uses to resolve a comparison operation. For example, in the following cases, it should be clear that the collation is the collation of column x: SELECT x FROM T ORDER BY x; ...
https://dev.mysql.com/doc/refman/5.7/en/column-indexes.html
The most common type of index involves a single column, storing copies of the values from that column in a data structure, allowing fast lookups for the rows with the corresponding column values. The B-tree data structure lets the index quickly ...
https://dev.mysql.com/doc/refman/5.7/en/connection-interfaces.html
This section describes aspects of how the MySQL server manages client connections. Network Interfaces and Connection Manager Threads Client Connection Thread Management Connection Volume Management Network Interfaces and Connection Manager Threads ...
https://dev.mysql.com/doc/refman/5.7/en/converting-tables-to-innodb.html
If you have MyISAM tables that you want to convert to InnoDB for better reliability and scalability, review the following guidelines and tips before converting. Increase the value of the innodb_buffer_pool_size configuration option, which performs ...
https://dev.mysql.com/doc/refman/5.7/en/create-index.html
CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name [index_type] ON tbl_name (key_part,...) [index_option] [algorithm_option | lock_option] ... This guideline is especially important for InnoDB tables, where the primary key determines the ...
https://dev.mysql.com/doc/refman/5.7/en/information-functions.html
It may be used to time how quickly MySQL processes the expression. The result value is 0, or NULL for inappropriate arguments such as a NULL or negative repeat count. The intended use is from within the mysql client, which reports query execution ...