planner/core: fix range info for the inner child of index join in explain (#8058)

[jarvys]

What problem does this PR solve?

fix issue #8058 , fix range info for the inner child of index join.

What is changed and how it works?

Add two more fields rangesWithFakeConds and keyOff2IdxOff to struct PhysicalIndexScan. When the ExplainInfo method called, generate range info with these two fields, not only with rangeDecidedBy.

Check List

Tests

• Unit test: add TestIssue8058 in cbo_test.go

Code changes

• Has exported function/method change

Side effects

• Nothing

Related changes

• Nothing

[CLAassistant]

All committers have signed the CLA.

[shenli]

@jarvys Thanks! Please fix the CI.

[winoros]

Hi, thanks for your contribution.

1. please take a look at planner, executor: index join enhancement #8471. When the index join support using t.c > tt.c and t.c < tt.c + 100 to construct ranges. The way you used cannot show enough information.
2. And you can just pass a string information to IndexScan to avoid add more fields to it. IMHO, Using three fields just to construct explain information is a little expensive.
3. You can use make dev to make sure you pass all the unit-test and the explain test in cmd/explaintest.

[jarvys]

@winoros Thanks for code review!

[jarvys]

@winoros I have made all the test cases passed by modifying the expect result of some test cases. I don't understand how the PR #8471 works now. I'm learning it.

I find you use the buildRangeDecidedByInformation method to build range info :)

[jarvys]

@winoros I find issue #9562. Maybe it's better to fix it first before the problems in #8471 and #9528

[codecov-io]

Codecov Report

Merging #9528 into master will decrease coverage by 0.0241%.
The diff coverage is 17.8571%.

@@               Coverage Diff                @@
##             master      #9528        +/-   ##
================================================
- Coverage   67.3963%   67.3722%   -0.0242%     
================================================
  Files           374        374                
  Lines         78942      78994        +52     
================================================
+ Hits          53204      53220        +16     
- Misses        20986      21022        +36     
  Partials       4752       4752

[winoros]

Thanks for you contribution!
But we have to close it since #8471 has done the same thing.