* impl cte as work table

* move SharedState to continuance

* impl WorkTableState

wip: readying pr to implement only logical plan

fix sql integration test

wip: add sql test for logical plan

wip: format test assertion

some docs

more docs

* Migrate references unit tests to sqllogictest

* Remove unused import

…roundtrip test between expression and proto, (apache#8868)

* add roundtrip test between expression and proto
---------

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

…pache#8883)

* add config flag for recursive ctes

update docs from script

update slt test for doc change

* restore testing pin

* fix struct

Signed-off-by: jayzhan211 <jayzhan211@gmail.com>

* add test

Signed-off-by: jayzhan211 <jayzhan211@gmail.com>

* support functions

Signed-off-by: jayzhan211 <jayzhan211@gmail.com>

---------

Signed-off-by: jayzhan211 <jayzhan211@gmail.com>

Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Fix datafusion-cli print output

* fmt

* Do not print header if only empty batches, test for same

…expr` to use `transform_down` (apache#8890)

* transform_down

* add test

…tes/parser