This implements `DB_Column.with`, which uses `WITH ... AS` SQL clauses to remove duplicates in the generated SQL.
After a discussion with @radeusgd, we concluded that we will probably want a more complete CTE implementation, so this one is useful for now to deal with big queries (like `round`).
# Important Notes
Still to do in this PR:
- [x] Rename `with` to `let` (or something similar)
- [x] tests
- [x] documentation
- [x] remove `State` hack by moving query generation into a class and using a `Ref` field for scoping
Results on `round_float`:
| --- | SQL length in characters (unprettified) | SQL length in lines (prettified) |
| --- | --- | --- |
| Without CTEs | 13193 | 851 |
| With CTEs | 3644 | 187 |
Compare the SQL:
[without-ctes.sql.txt](https://github.com/user-attachments/files/16629356/without-ctes.sql.txt)
[with-ctes.sql.txt](https://github.com/user-attachments/files/16629357/with-ctes.sql.txt)
Update, with name shortening:
| --- | SQL length in characters (unprettified) | SQL length in lines (prettified) |
| --- | --- | --- |
| Without CTEs | 13193 | 853 |
| With CTEs | 2427 | 176 |
[without-cte.txt](https://github.com/user-attachments/files/16694328/without-cte.txt)
[with-cte.txt](https://github.com/user-attachments/files/16694327/with-cte.txt)
- Closes#10411
- Also a similar technique allowed to add partial support for SQLite as well.
- Only `include_nothing=True` case is still not supported as the technique used for Snowflake did not port well to SQLite and I did not find yet a satisfactory workaround (it is doable, but too ugly to justify it for now IMHO).
Fixes the issue with the S3 test on CI:
```
- [FAILED] should fail to write a file if permissions are lacking [1108ms]
Reason: The value (S3 Error: User: arn:aws:iam::539646847106:user/enso_ci_s3_tester is not authorized to perform: s3:PutObject on resource: "arn:aws:s3:::enso-data-samples/examples/no-write-permissions-here.txt.bak" because no identity-based policy allows the s3:PutObject action (AccessDenied)) did not contain the element (Access Denied) (at /runner/_work/enso/enso/test/AWS_Tests/src/S3_Spec.enso:488:13-68).
```
- Review and update the doc comments of public functions in the AWS library.
- Reorder the functions to make the order in component browser (and online docs better).
- Align some error handling.
- Fix bug with `list` on root S3.
- Hide `S3.get_object` as it's single read makes it bad for GUI use.
- Enables the `..` autoscoping style for creating Atoms in expressions.
- Add type checking to methods in columns.
- Auto wrap returns from method in expressions into a column as needed.
- Remove `Time_Period.Day` to remove confusion..
Majority of warnings handling is now done via newly introduced nodes. Moreover, the underlying representation of warnings storage in `WithWarnings` was changed from `Warning[]` to `EnsoHashMap`.
# Important Notes
- Remove `ArrayRope`.
- Adds `Hyper_File` allowing reading a Tableau hyper file.
- Can read the schema and table list.
- Can read the structure of a table.
- Can read data into an Enso Table.
Fixes#10609 by rewriting all our upload-related operations to rely on `DDL_Transaction` - an abstraction that handles 'transactionality' of `CREATE TABLE` statements dependent on if a given backend allows DDLs within transactions or not (if not it emulates transactionality by creating the tables outside of transaction and then dropping them on rollback).
- Close#10622
- Changes `project-manager` and `ensoup` launcher to run the engine/language-server with working directory set to the directory containing currently running project.
- If the working directory is _not_ "the directory containing currently running project", a warning is written to logs. This can happen if the raw `/bin/enso` engine runner is used in a different directory.
- In the Cloud, the `File.new` interprets relative paths as cloud paths relative to the Cloud directory containing the current project. Absolute paths are unaffected.
- Adjusted Filter_Condition removing keep/drop from basic filters.
- Fix Is_In to have selector.
- Fix for Date simple expressions.
- Add get_row to Table and DB_Table.
In a sequence of value-level operators, whitespace does not affect relative precedence. Functional operators still follow the space-precedence rules.
The "functional" operators are: `>> << |> |>> <| <<| : .`, application, and any operator containing `<-` or `->`. All other operators are considered value-level operators.
Asymmetric whitespace can still be used to form *operator sections* of value-level operators, e.g. `+2 * 3` is still equivalent to `x -> (x+2) * 3`.
Precedence of application is unchanged, so `f x+y` is still equivalent to `f (x + y)` and `f x+y * z` is still equivalent to `(f (x + y)) * z`.
Any attempt to use spacing to override value-level operator precedence will be caught by the new enso linter. Mixed spacing (for clarity) in value-operator expressions is allowed, as long as it is consistent with the precedences of the operators.
Closes#10366.
# Important Notes
Precedence warnings:
- The parser emits a warning if the whitespace in an expression is inconsistent with its effective precedence.
- A new enso linter can be run with `./run libraries lint`. It parses all `.enso` files in `distribution/lib` and `test`, and reports any errors or warnings. It can also be run on individual files: `cargo run --release --bin check_syntax -- file1 file2...` (the result may be easier to read than the `./run` output).
- The linter is also run as part of `./run lint`, so it is checked in CI.
Additional language change:
- The exponentiation operator (`^`) now has higher precedence than the multiplication class (`*`, `/`, `%`). This change did not affect any current enso files.
Library changes:
- The libraries have been updated. The new warnings were used to identify all affected code; the changes themselves have not been programmatically verified (in many cases their equivalence relies on the commutativity of string concatenation).
- Closes#9486
- All tests are succeeding or marked pending
- Created follow up tickets for things that still need to be addressed, including:
- Fixing upload / table update #10609
- Fixing `Count_Distinct` on Boolean columns #10611
- Running the tests on CI is not part of this PR - to be addressed separately
- Part of #9486
- Fixes `Table.union`, `merge` and `distinct` tests
- Replaces `distinct_on` in `Context` that was actually a Postgres specific addition leaking into the base with a more abstract `Context_Extension` mechanism.
- This allows us to implement the Snowflake-specific `DISTINCT` using `QUALIFY`.
The `System.exit 42` component is treated the same way as any other Panic error - it does not interfere with other component evaluation:
After removing the `System.exit 42` component, the workflow works as expected. I have also tried opening the project with the component and then removing it.
Enables `engine.TruffleCompilation` in `std-benchmarks`, collects the logs and dumps compilation into to `System.err` when a benchmark is influenced by dynamic compilation.
