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chore(test): add ut for type check #17680

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@forsaken628 forsaken628 commented Apr 1, 2025

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

Summary

Tests

  • Unit Test
  • Logic Test
  • Benchmark Test
  • No Test - Explain why

Type of change

  • Bug Fix (non-breaking change which fixes an issue)
  • New Feature (non-breaking change which adds functionality)
  • Breaking Change (fix or feature that could cause existing functionality not to work as expected)
  • Documentation Update
  • Refactoring
  • Performance Improvement
  • Other (please describe): test

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Signed-off-by: coldWater <[email protected]>
@github-actions github-actions bot added the pr-chore this PR only has small changes that no need to record, like coding styles. label Apr 1, 2025
Signed-off-by: coldWater <[email protected]>

ast : d128 = '1'
raw expr : eq(d128::Decimal(38, 0), '1')
checked expr : eq<Float64, Float64>(to_float64<Decimal(38, 0)>(d128), to_float64<String>("1"))
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The implicit type conversion rules are a bit inconsistent here.
Why d128 = '1' is allowed but d128 > '1' is not. and should not cast to Float64

Signed-off-by: coldWater <[email protected]>
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