Question

If it is how can i query on double and date, I mean there has to be a way to cast them back and them sort them for example.

Answer 1

Sure, this can be done, but why do you need to do that, when data types exist that do it for you more reliably and with better performance?

I think I smell the EAV antipattern here…

But to answer your question, you can cast a string containing numbers to the actual numeric value like this:

SELECT '123.456' + 0.0;

You can cast a string containing a date literal to the actual date data type with the STR_TO_DATE() function:

SELECT STR_TO_DATE('Nov 12, 2009', '%M %d,%Y');