One thing that you can do to MySQL is change the data type on Salesforce DATE fields, example:
Account Object:
CreatedDate column/field. I orginally setup this field as a DATE type, but you can change it to DATETIME. When you change the type, you will see a difference in your data in MySQL:
Code:
DATE type:
2007-07-10
`createddate` date default NULL,
Code:
DATETIME type:
2007-07-10 12:49:40
`createddate` datetime default NULL,
You can do this to any date field in MySQL