Timestamp key column data needed _binary
            stripped for
            UpdatableResultSet.refreshRow(). (Bug#7686)
          
Timestamps converted incorrectly to strings with server-side prepared statements and updatable result sets. (Bug#7715)
            Detect new sql_mode variable in string
            form (it used to be integer) and adjust quoting method for
            strings appropriately.
          
            Added holdResultsOpenOverStatementClose
            property (default is false), that keeps
            result sets open over statement.close() or new execution on
            same statement (suggested by Kevin Burton).
          
Infinite recursion when “falling back” to master in failover configuration. (Bug#7952)
Disable multi-statements (if enabled) for MySQL-4.1 versions prior to version 4.1.10 if the query cache is enabled, as the server returns wrong results in this configuration.
            Fixed duplicated code in
            configureClientCharset() that prevented
            useOldUTF8Behavior=true from working
            properly.
          
            Removed dontUnpackBinaryResults
            functionality, the driver now always stores results from
            server-side prepared statements as is from the server and
            unpacks them on demand.
          
Emulated locators corrupt binary data when using server-side prepared statements. (Bug#8096)
            Fixed synchronization issue with
            ServerPreparedStatement.serverPrepare()
            that could cause deadlocks/crashes if connection was shared
            between threads.
          
            By default, the driver now scans SQL you are preparing via
            all variants of
            Connection.prepareStatement() to
            determine if it is a supported type of statement to prepare
            on the server side, and if it is not supported by the
            server, it instead prepares it as a client-side emulated
            prepared statement. You can disable this by passing
            emulateUnsupportedPstmts=false in your
            JDBC URL. (Bug#4718)
          
            Remove _binary introducer from parameters
            used as in/out parameters in
            CallableStatement.
          
            Always return byte[]s for output
            parameters registered as *BINARY.
          
            Send correct value for “boolean”
            true to server for
            PreparedStatement.setObject(n, "true",
            Types.BIT).
          
            Fixed bug with Connection not caching statements from
            prepareStatement() when the statement
            wasn't a server-side prepared statement.
          
            Choose correct “direction” to apply time
            adjustments when both client and server are in GMT time zone
            when using ResultSet.get(..., cal) and
            PreparedStatement.set(...., cal).
          
            Added dontTrackOpenResources option
            (default is false, to be JDBC compliant),
            which helps with memory use for non-well-behaved apps (that
            is, applications that don't close
            Statement objects when they should).
          
            ResultSet.getString() doesn't maintain
            format stored on server, bug fix only enabled when
            noDatetimeStringSync property is set to
            true (the default is
            false). (Bug#8428)
          
            Fixed NPE in ResultSet.realClose() when
            using usage advisor and result set was already closed.
          
            PreparedStatements not creating streaming
            result sets. (Bug#8487)
          
            Don't pass NULL to
            String.valueOf() in
            ResultSet.getNativeConvertToString(), as
            it stringifies it (that is, returns
            null), which is not correct for the
            method in question.
          
            ResultSet.getBigDecimal() throws
            exception when rounding would need to occur to set scale.
            The driver now chooses a rounding mode of “half
            up” if non-rounding
            BigDecimal.setScale() fails. (Bug#8424)
          
            Added useLocalSessionState configuration
            property, when set to true the JDBC
            driver trusts that the application is well-behaved and only
            sets autocommit and transaction isolation levels using the
            methods provided on java.sql.Connection,
            and therefore can manipulate these values in many cases
            without incurring round-trips to the database server.
          
            Added enableStreamingResults() to
            Statement for connection pool
            implementations that check
            Statement.setFetchSize() for
            specification-compliant values. Call
            Statement.setFetchSize(>=0) to disable
            the streaming results for that statement.
          
            Added support for BIT type in
            MySQL-5.0.3. The driver will treat
            BIT(1-8) as the JDBC standard
            BIT type (which maps to
            java.lang.Boolean), as the server does
            not currently send enough information to determine the size
            of a bitfield when < 9 bits are declared.
            BIT(>9) will be treated as
            VARBINARY, and will return
            byte[] when
            getObject() is called.
          
Ésta es una traducción del manual de referencia de MySQL, que puede encontrarse en dev.mysql.com. El manual de referencia original de MySQL está escrito en inglés, y esta traducción no necesariamente está tan actualizada como la versión original. Para cualquier sugerencia sobre la traducción y para señalar errores de cualquier tipo, no dude en dirigirse a mysql-es@vespito.com.

