Reapply "Fix/support duplicate column names"

[alamb]

Draft until I have updated the datafusion-testing repo

Which issue does this PR close?

• Closes Support columns having the same alias #6543 (again)

Rationale for this change

• @RafaelHerrero introduced this new feature in Fix/support duplicate column names #6543 #21126
• @mbutrovich had to revert it due to extended test failures here here fix: Revert "Fix/support duplicate column names #6543 (#21126)" #21254

I think it is an important feature so let's get it in

What changes are included in this PR?

1. Reapply the change (revert the revert)
2. Update the extended tests expected output as described in the readme

Are these changes tested?

Yes by CI (and @mbutrovich has updated the tests to run extended tests here #21255)

Are there any user-facing changes?

[alamb]

I tried to update the sqllogictests following the instructions

However, it seems as if our patched version of sqlogictest doesn't match the version that we currently use:

 [[package]]
 name = "sqllogictest"
-version = "0.29.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d03b2262a244037b0b510edbd25a8e6c9fb8d73ee0237fc6cc95a54c16f94a82"
+version = "0.27.2"
+source = "git+https://github.com/Omega359/sqllogictest-rs.git?rev=73c47cf7#73c47cf74944064173f6b603cb39c3802b46b0c7"
 dependencies = [
  "async-trait",
  "educe",

I am going to turn codex loose on this for a bit and see what it comes up with

[RafaelHerrero]

Since this was my original change, I'd like to help get it re-landed. I can look into the sqllogictest version mismatch and update the expected results if that would be helpful.

[alamb]

Since this was my original change, I'd like to help get it re-landed. I can look into the sqllogictest version mismatch and update the expected results if that would be helpful.

That would be super helpful -- I haven't had a chance to look into it more yet