[IOTDB-557] Use generalized "and" and "or"

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Planner/SQLOptimizer
• Labels: expression query
• Assignee: Unassigned
• Reporter: Tian Jiang
• Created: 11/Mar/20 08:59
• Updated: 10/Apr/20 11:37

Description

We only use binary "and" and "or" in expression construction, as a result, a filter like "root.group1..s1 > 1" ( ranges from d1 to d100) will result in a filter tree of over 100 nodes, which could be a great waste when there are even more series.

By using generalized "and" and "or", we can replace such a filter tree with just one filter node, which I think could relieve the Java GC a lot.