https://dev.mysql.com/silent-column-changes.html
If strict SQL mode is not enabled, a VARCHAR column with a length specification greater than 65535 is converted to TEXT, and a VARBINARY column with a length specification greater than 65535 is converted to BLOB. Specifying the CHARACTER SET binary ... In some cases, MySQL silently changes column specifications from those given in a CREATE TABLE or ALTER TABLE ...
https://dev.mysql.com/sys-sys-get-config.html
in_variable_name VARCHAR(128): The name of the configuration option for which to return the value. in_default_value VARCHAR(128): The default value to return if the configuration option is not found in the sys_config table. Given a configuration ...
https://dev.mysql.com/atomic-ddl.html
An atomic DDL statement combines the data dictionary updates, storage engine operations, and binary log writes associated with a DDL operation into a single, atomic transaction. The transaction is either committed, with applicable changes persisted ...
https://dev.mysql.com/c-api-data-structures.html
This enables you to distinguish BINARY from CHAR, VARBINARY from VARCHAR, and the BLOB types from the TEXT types. This section describes C API data structures other than those used for prepared statements, the asychronous interface, or the ...
https://dev.mysql.com/c-api-prepared-statement-type-codes.html
The buffer_type member of MYSQL_BIND structures indicates the data type of the C language variable bound to a statement parameter or result set column. For input, buffer_type indicates the type of the variable containing the value to be sent to the ...
https://dev.mysql.com/cast-functions.html
For example, the following pairs of definitions are equivalent: CHAR(10) CHARACTER SET binary BINARY(10) VARCHAR(10) CHARACTER SET binary VARBINARY(10) TEXT CHARACTER SET binary BLOB CAST(expr AS type [ARRAY]) The CAST() function takes an expression ... Table 12.14 Cast Functions and Operators Name Description BINARY Cast a string to a binary string CAST() Cast a value as a certain type CONVERT() Cast a value as a certain type Cast functions and operators enable conversion of values from one data type to ...
https://dev.mysql.com/charset-binary-collations.html
Nonbinary strings (as stored using the CHAR, VARCHAR, and TEXT data types) have a character set and collation other than binary. The pad attribute determines how trailing spaces are treated for comparison of nonbinary strings (CHAR, VARCHAR, and ...
https://dev.mysql.com/charset-collation-implementations.html
MySQL implements several types of collations: Simple collations for 8-bit character sets This kind of collation is implemented using an array of 256 weights that defines a one-to-one mapping from character codes to weights. It is a case-insensitive ...
https://dev.mysql.com/charset-conversion.html
If the column has a nonbinary data type (CHAR, VARCHAR, TEXT), its contents should be encoded in the column character set, not some other character set. To convert a binary or nonbinary string column to use a particular character set, use ALTER ...
https://dev.mysql.com/charset-unicode-sets.html
This section describes the collations available for Unicode character sets and their differentiating properties. MySQL supports multiple Unicode character sets: utf8mb4: A UTF-8 encoding of the Unicode character set using one to four bytes per ...
