MAX is faster than TOP with an ORDER BY when retrieving post dates.
Revert "MAX is faster than TOP with an ORDER BY when retrieving post dates." and recommit with props to @patrickebates.

This reverts commit 0ca4d23f8e4292a765895e0b720f84cad8eb4ccd.
MAX is faster than TOP with an ORDER BY when retrieving post dates. props to @patrickebates for this fix.