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https://dev.mysql.com/doc/refman/8.0/en/binary-varbinary.html
The BINARY and VARBINARY types are similar to CHAR and VARCHAR, except that they store binary strings rather than nonbinary strings. This means they have the binary character set and collation, and comparison and sorting are based on the numeric ...
https://dev.mysql.com/doc/refman/8.0/en/memory-storage-engine.html
A typical use case for the MEMORY engine involves these characteristics: Operations involving transient, non-critical data such as session management or caching. Performance Characteristics MEMORY performance is constrained by contention resulting ... The MEMORY storage engine (formerly known as HEAP) creates special-purpose tables with contents that are stored in ...
https://dev.mysql.com/doc/refman/8.0/en/kerberos-pluggable-authentication.html
Note Kerberos pluggable authentication is an extension included in MySQL Enterprise Edition, a commercial product. MySQL Enterprise Edition supports an authentication method that enables users to authenticate to MySQL Server using Kerberos, ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-sets.html
The reason is that utf8mb4_unicode_ci supports mappings such as expansions; that is, when one character compares as equal to combinations of other characters. (See Section 14.8, “String Functions and Operators”.) If a collation uses a weight ...
https://dev.mysql.com/doc/refman/8.0/en/load-data.html
Input File Character Set The file name must be given as a literal string. The server interprets the file name using the character set indicated by the character_set_filesystem system variable. By default, the server interprets the file contents ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-storage-layout.html
(See Section 17.6.2.1, “Clustered and Secondary Indexes”.) Create an AUTO_INCREMENT column as the primary key if your primary key is long, or index a prefix of a long VARCHAR column instead of the entire column. Use the VARCHAR data type instead ... Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the OPTIMIZE TABLE statement to reorganize the table and compact any wasted ...
https://dev.mysql.com/doc/refman/8.0/en/storage-requirements.html
String Type Storage Requirements In the following table, M represents the declared column length in characters for nonbinary string types and bytes for binary string types. Data Type Storage Required CHAR(M) The compact family of InnoDB row formats ... InnoDB Table Storage Requirements NDB Table Storage Requirements Numeric Type Storage Requirements Date and Time Type Storage Requirements String Type Storage Requirements Spatial Type Storage Requirements JSON Storage Requirements The storage requirements for table data on disk depend on several ...
https://dev.mysql.com/doc/refman/8.0/en/alter-table-examples.html
row *************************** Table: t1 Create Table: CREATE TABLE `t2` ( `c1` int(11) DEFAULT NULL ) /*!50100 TABLESPACE ts_1 STORAGE DISK */ ENGINE=ndbcluster DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci 1 row in set (0.01 sec) To change ...For NDB tables, it is also possible to change the storage type used for a table or ...
https://dev.mysql.com/doc/refman/8.0/en/charset-binary-collations.html
Binary strings (as stored using the BINARY, VARBINARY, and BLOB data types) have a character set and collation named binary. Nonbinary strings (as stored using the CHAR, VARCHAR, and TEXT data types) have a character set and collation other than ...
https://dev.mysql.com/doc/refman/8.0/en/charset-examples.html
The following examples show how MySQL determines default character set and collation values. Example 1: Table and Column Definition CREATE TABLE t1 ( c1 CHAR(10) CHARACTER SET latin1 COLLATE latin1_german1_ci ) DEFAULT CHARACTER SET latin2 COLLATE ...Notice that there is no problem with storing a latin1 column in a latin2 ...