Coldfusion Error: "Value can not be converted to requested type."

Symptom: All of a sudden the test cases that worked before, stopped working. Error message is: "Value can not be converted to requested type.". Wasted hours trying to diff and check typos with no avail. Finally, surrender, and Googled the following article published in 2006:

ColdFusion Query Error: Value Can Not Be Converted To Requested Type

http://www.bennadel.com/blog/194-ColdFusion-Query-Error-Value-Can-Not-Be-Converted-To-Requested-Type.htm

So, it is an old problem that never go away. Everything clicks now. Database schema was just updated with a few new columns. "SELECT *" combined with CFQUERYPARAM seems to have some caching issue and everything just messed up from there.

Solution? remove SELECT *, change to use explicit column names. The problem simply goes away for good.