为什么MySQL数据连接器比MySQL查询浏览器花费的时间更长？

I have a very simple query (three where conditions; two equals, one between) from a single table and in MySQL Query Browser the query takes less than half a second to run, returning 8300 records. If I run the exact same query using the MySQL Data Connector (really just an OLEDB wrapper), it takes about 35 seconds.I have a very simple query (three where conditi