fix: consider lazy columns when pruning unused columns.

[RinChanNOWWW]

I hereby agree to the terms of the CLA available at: https://databend.rs/dev/policies/cla/

Summary

UnusedColumnPruner should consider lazy columns and remove them from require_columns.

Closes #11831

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
databend	⬜️ Ignored (Inspect)			Jun 21, 2023 9:45am

[BohuTANG]

Summary (From llmchain)

• Improved column pruning Changes to HeuristicOptimizer and UnusedColumnPruner structs to exclude lazy columns.
• New field added UnusedColumnPruner struct now includes apply_lazy field.
• Exclude lazy columns in Limit operator remove_unused_columns function now excludes lazy columns when apply_lazy is true.
• New test case Added test case in explain/ directory for SELECT statement with time range and LIMIT clause.