matrixorigin / matrixorigin/matrixone
[Tech Request]: Avoide using expr.String() or tree.String() during BuildPlan
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kind/tech-request
priority/p1
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Description
### Is there an existing issue for the same tech request?
- [x] I have checked the existing issues.
### Does this tech request not affect user experience?
- [x] This tech request doesn't affect user experience.
### What would you like to be added ?
```Markdown
Avode using expr.String() or tree.String() during BuildPlan.
Using ExprHash instead. Or optimized string() implementation if needed.
```
### Why is this needed ?
[pprof.mo-service.samples.cpu.129.pb.gz](https://github.com/user-attachments/files/21734141/pprof.mo-service.samples.cpu.129.pb.gz)
### Additional information
Contributor guide
Assessment
This issue has not been assessed yet.