[CLI] more robust load interface

[ZhiHanZ]

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

Summary

load api support complex dataset like ontime

Changelog

• Improvement

Related Issues

Fixes #issue

Test Plan

Unit Tests

Stateless Tests

[databend-bot]

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[ZhiHanZ]

prototype for #2627

[BohuTANG]

/lgtm

[databend-bot]

Approved! Thank you for the PR @ZhiHanZ

[codecov-commenter]

Codecov Report

Merging #2629 (f2af275) into main (ede955c) will increase coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff          @@
##            main   #2629   +/-   ##
=====================================
  Coverage     72%     72%           
=====================================
  Files        649     650    +1     
  Lines      36610   36620   +10     
=====================================
+ Hits       26484   26524   +40     
+ Misses     10126   10096   -30     

Impacted Files	Coverage Δ
query/src/configs/config_meta.rs	95% <ø> (ø)
metasrv/src/meta_service/meta_service_impl.rs	71% <0%> (-2%)	⬇️
common/cache/src/cache/lru_test.rs	100% <0%> (ø)
common/cache/src/meter/heap_meter.rs	100% <0%> (ø)
common/meta/sled-store/src/sled_tree.rs	92% <0%> (+<1%)	⬆️
metasrv/src/meta_service/network.rs	79% <0%> (+<1%)	⬆️
common/management/src/namespace/namespace_mgr.rs	79% <0%> (+<1%)	⬆️
metasrv/src/meta_service/raftmeta.rs	89% <0%> (+<1%)	⬆️
common/datavalues/src/series/series_impl.rs	86% <0%> (+1%)	⬆️
query/src/common/mod.rs	72% <0%> (+3%)	⬆️
... and 3 more

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[databend-bot]

CI Passed
Reviewer Approved
Let's Merge