We try to make MySQL Server follow the ANSI SQL standard and the ODBC SQL standard, but MySQL Server performs operations differently in some cases:
In some cases,
are silently converted to
VARCHAR columns when you
define a table or alter its structure. (This no longer
occurs as of MySQL 5.0.3). See
Section 18.104.22.168, “Silent Column Specification Changes”.
There are several differences between the MySQL and standard
SQL privilege systems. For example, in MySQL, privileges for
a table are not automatically revoked when you delete a
table. You must explicitly issue a
REVOKE statement to revoke
privileges for a table. For more information, see
Section 22.214.171.124, “REVOKE Syntax”.
Standard SQL requires that a
clause in a
be able to refer to columns in the
BY clause. This cannot be done before MySQL 5.0.2.