Perf/issue 155

[KKould]

What problem does this PR solve?

DataValue::Tuple add is_upper

the is_upper attached to the Tuple is used to represent the smaller number of values ​​of the tuple, indicating lower or upper. e.g. (1, 2, 3, is_upper: true) > (1, 2, 3, 4, is_upper: true or false)

In this way, the semantics are expressed when there are multiple columns in the index and the upper of the predicate expression range at the end is unbound.
e.g.index(c1, c2), select * from t1 where c1 = 0 and c2 > 0 => index range: (lower: (0, 0), upper: (0))

This feature makes the inference of index range more accurate and greatly improves the hit case of composite index.

Issue link: #155

Tpcc Statment Explain

add test explain_tpcc on tpcc/src/main.rs for make sure all query statement use index

Tpmc is 6669 now!

Code changes

• Has Rust code change
• Has CI related scripts change

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Note for reviewer