Revert "Fixed test break."

This reverts commit 70b57766b1577f1927c63f5a181f02cf00281214.
Revert "Fixes #3469: Fixed the bug that `QueryBuilder::getColumnType()` may drop the provided column precision in certain cases"

This reverts commit a46efe79c6a306131b2fb8b53d4941a5f1b67ef3.