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https://dev.mysql.com/doc/refman/9.7/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. The permissible maximum length is the same for BINARY and VARBINARY as it is for CHAR and VARCHAR, except that the ...This means they have the binary character set and collation, and comparison and sorting are based on the numeric values of the bytes in the ...
https://dev.mysql.com/doc/refman/9.7/en/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 If BINARY is invoked from within the mysql client, binary strings ... Table 14.15 Cast Functions and Operators Name Description Deprecated BINARY Cast a string to a binary string Yes 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/doc/refman/9.7/en/charset-national.html
For example, these data type declarations are equivalent: CHAR(10) CHARACTER SET utf8 NATIONAL CHARACTER(10) NCHAR(10) As are these: VARCHAR(10) CHARACTER SET utf8 NATIONAL VARCHAR(10) NVARCHAR(10) NCHAR VARCHAR(10) NATIONAL CHARACTER VARYING(10) ...
https://dev.mysql.com/doc/refman/9.7/en/create-table-generated-columns.html
Values of a generated column are computed from an expression included in the column definition. Generated column definitions have this syntax: col_name data_type [GENERATED ALWAYS] AS (expr) [VIRTUAL | STORED] [NOT NULL | NULL] [UNIQUE [KEY]] ...
https://dev.mysql.com/doc/refman/9.7/en/encryption-functions.html
This avoids potential problems with trailing space removal or character set conversion that would change data values, such as may occur if you use a nonbinary string data type (CHAR, VARCHAR, TEXT). character is added to avoid problems with endspace ...If you want to store these results, use a column with a VARBINARY or BLOB binary string data ...
https://dev.mysql.com/doc/refman/9.7/en/federated-usagenotes.html
For example, creating a FEDERATED table fails if the table uses an index prefix on any VARCHAR, TEXT or BLOB columns. The following items indicate features that the FEDERATED storage engine does and does not support: The remote server must be a ...
https://dev.mysql.com/doc/refman/9.7/en/getting-information.html
What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and ...
https://dev.mysql.com/doc/refman/9.7/en/group-by-handling.html
SQL-92 and earlier does not permit queries for which the select list, HAVING condition, or ORDER BY list refer to nonaggregated columns that are not named in the GROUP BY clause. SQL:1999 and later permits such nonaggregates per optional feature ...
https://dev.mysql.com/doc/refman/9.7/en/internal-temporary-tables.html
The TempTable storage engine provides efficient storage for VARCHAR and VARBINARY columns, and other binary large object types. VARCHAR and VARBINARY column values are padded to the maximum column length, in effect storing them as CHAR and BINARY ...
https://dev.mysql.com/doc/refman/9.7/en/multiple-tables.html
Given these considerations, the CREATE TABLE statement for the event table might look like this: mysql> CREATE TABLE event (name VARCHAR(20), date DATE, type VARCHAR(15), remark VARCHAR(255)); As with the pet table, it is easiest to load the initial ... The pet table keeps track of which pets you ...