3.0.2.5

Enhancements:

• tar.gz installer can detect RPM/Deb installation and remove them per user's confirmation
• Performance improvement of partition by
• Performance improvement of "select * limit 0"
• Performance improvement of "select count(*)" when there is out-of-order data
• Performance improvement for query by caching head files

Fixed Bugs:

• taosd crashs when querying information_schema with filter conditions
• taosd crashs when inserting data rows with duplicate timestamp in some extreme cases
• taosd crashs when executing some very complicated queries
• taosd crashs on Windows
• keepColumnName doesn't work in sub-query
• min(), max() and some functions don't return correct result when all data are in data files
• taoskeeper failed to start because "create database" is not executed prior to "create table" in some cases
• Some memory leak problems in taosd
• Memory leak in taosadpater when using line protocol
• No result is returned using "order by asc limit offset"
• interp() doesn't work properly in sub-query
• Error "WAL failed to remove log file" on Windows
• A lot of internal bugs to improve stability