Optimize input/var property expression to get property from tuple by

[Shylock-Hg]

index to avoid hash table lookup.

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Close #4174

Description:

How do you solve it?

Special notes for your reviewer, ex. impact of this fix, design document, etc:

Checklist:

Tests:

• Unit test(positive and negative cases)
• Function test
• Performance test
• N/A

Affects:

• Documentation affected (Please add the label if documentation needs to be modified.)
• Incompatibility (If it breaks the compatibility, please describe it and add the label.）
• If it's needed to cherry-pick (If cherry-pick to some branches is required, please label the destination version(s).)
• Performance impacted: Consumes more CPU/Memory

Release notes:

Please confirm whether to be reflected in release notes and how to describe:

ex. Fixed the bug .....

[Shylock-Hg]

Origin benchmark:

============================================================================
/nebula/src/graph/context/test/InputVarPropBenchmark.cpprelative  time/iter  iters/s
============================================================================
inputVarPropEval(test)                                      32.79ns   30.50M
============================================================================

Current benchmark:

 ============================================================================
 /nebula/src/graph/context/test/InputVarPropBenchmark.cpprelative  time/iter  iters/s
 ============================================================================
 inputVarPropEval(test)                                      11.82ns   84.59M
 ============================================================================

[jievince]

I remember we have a ColumnIndexExpr? It looks like that rewriteing InputPropExpr to ColumnIndexExpr is more easy

[Shylock-Hg]

Good job, we can add an optimize rule to do it. But current optimization is also useful now and no need to rewrite expression.