786a721e03
1. Analyze with sample automatically when table size is greater than huge_table_lower_bound_size_in_bytes(5G by default). User can disable this feature by fe option enable_auto_sample 2. Support grammer like `ANALYZE TABLE test WITH FULL` to force do full analyze whatever table size is 3. Fix bugs that tables stats doesn't get updated properly when stats is dropped, or only few column is analyzed