Revert "INTERVAL 语法支持"
Merge pull request #766 from alibaba/revert-760-dev

Revert "INTERVAL 语法支持"
Revert "Revert "INTERVAL 语法支持""
Merge pull request #767 from alibaba/revert-766-revert-760-dev

Revert "Revert "INTERVAL 语法支持""