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[Enhancement] check compare optmization more strict (backport #42936) #43343

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@mergify mergify bot commented Mar 28, 2024

Why I'm doing:

string > 1231, will optimize to string > "1231", but >,<,<=,>= must cast to double

For:
string > 123, must cast to double, can't optimize
string = 123, and cbo_eq_type = decimal, can't optimize
string = 123, and cbo_eq_type = varchar, can be string = "123" , but if follow the normal logical, the result also string = "123" , it's unnecessary

What I'm doing:

Fixes #40619

What type of PR is this:

  • BugFix
  • Feature
  • Enhancement
  • Refactor
  • UT
  • Doc
  • Tool

Does this PR entail a change in behavior?

  • Yes, this PR will result in a change in behavior.
  • No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

  • Interface/UI changes: syntax, type conversion, expression evaluation, display information
  • Parameter changes: default values, similar parameters but with different default values
  • Policy changes: use new policy to replace old one, functionality automatically enabled
  • Feature removed
  • Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

  • I have added test cases for my bug fix or my new feature
  • This pr needs user documentation (for new or modified features or behaviors)
    • I have added documentation for my new feature or new function
  • This is a backport pr

Bugfix cherry-pick branch check:

  • I have checked the version labels which the pr will be auto-backported to the target branch
    • 3.2
    • 3.1
    • 3.0
    • 2.5

This is an automatic backport of pull request #42936 done by [Mergify](https://mergify.com). ## Why I'm doing:

string > 1231, will optimize to string > "1231", but >,<,<=,>= must cast to double

For:
string > 123, must cast to double, can't optimize
string = 123, and cbo_eq_type = decimal, can't optimize
string = 123, and cbo_eq_type = varchar, can be string = "123" , but if follow the normal logical, the result also string = "123" , it's unnecessary

What I'm doing:

Fixes #40619

What type of PR is this:

  • BugFix
  • Feature
  • Enhancement
  • Refactor
  • UT
  • Doc
  • Tool

Does this PR entail a change in behavior?

  • Yes, this PR will result in a change in behavior.
  • No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

  • Interface/UI changes: syntax, type conversion, expression evaluation, display information
  • Parameter changes: default values, similar parameters but with different default values
  • Policy changes: use new policy to replace old one, functionality automatically enabled
  • Feature removed
  • Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

  • I have added test cases for my bug fix or my new feature
  • This pr needs user documentation (for new or modified features or behaviors)
    • I have added documentation for my new feature or new function
  • This is a backport pr

Signed-off-by: Seaven <seaven_7@qq.com>
(cherry picked from commit a04b659)

# Conflicts:
#	fe/fe-core/src/test/resources/sql/subquery/scalar-subquery.sql
#	test/sql/test_multi_ops/R/test_depends_ops
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mergify bot commented Mar 28, 2024

Cherry-pick of a04b659 has failed:

On branch mergify/bp/branch-3.1/pr-42936
Your branch is up to date with 'origin/branch-3.1'.

You are currently cherry-picking commit a04b659a9a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   fe/fe-core/src/main/java/com/starrocks/sql/common/TypeManager.java
	modified:   fe/fe-core/src/main/java/com/starrocks/sql/optimizer/rewrite/scalar/ImplicitCastRule.java
	modified:   fe/fe-core/src/test/java/com/starrocks/sql/plan/ExpressionTest.java
	modified:   fe/fe-core/src/test/java/com/starrocks/sql/plan/ReplayFromDumpTest.java
	modified:   fe/fe-core/src/test/resources/sql/subquery/in-subquery.sql

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   fe/fe-core/src/test/resources/sql/subquery/scalar-subquery.sql
	deleted by us:   test/sql/test_multi_ops/R/test_depends_ops

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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mergify bot commented Mar 28, 2024

@mergify[bot]: Backport conflict, please reslove the conflict and resubmit the pr

auto-merge was automatically disabled March 28, 2024 11:16

Pull request was closed

@mergify mergify bot deleted the mergify/bp/branch-3.1/pr-42936 branch March 28, 2024 11:17
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