The MySQL back-end requires the MySQL C 
	client library (libmysqlclient.so).
	The location of this library is specified 
	via *mysql-so-load-path*, which defaults
	to /usr/lib/libmysqlclient.so.
	Additional flags to ld needed for
	linking are specified via *mysql-so-libraries*,
	which defaults to ("-lc").
      
Use
(asdf:operate 'asdf:load-op 'clsql-mysql)
to load the MySQL back-end. The database type for the MySQL back-end is :mysql.
hostString representing the hostname or IP address the MySQL server resides on, or nil to indicate the localhost.
dbString representing the name of the database on the server to connect to.
userString representing the user name to use for authentication, or nil to use the current Unix user ID.
passwordString representing the unencrypted password to use for authentication, or nil if the authentication record has an empty password field.
portString representing the port to use for communication with the MySQL server.
            drop-index
            requires a table to be specified with the
            :on keyword parameter.
          
views are not supported by MySQL.
            The :transactions keyword argument to
            create-table
            controls whether or not the created table is an InnoDB
            table which supports transactions.
          
The :owner keyword argument to the FDDL functions for listing and testing for database objects is ignored.
            Prior to version 4.1, MySQL does not support nested
            subqueries in calls to select.
          
            MySQL does not support the ||
            concatenation operator. Use concat
            instead.
          
            MySQL does not support the substr
            operator. Use substring instead.
          
            MySQL does not support the
            intersect and
            except set operations.
          
MySQL (version 4.0 and later) does not support string table aliases unless the server is started with ANSI_QUOTES enabled.