[Doc] Enable doctest with Calcite

[LantaoJin]

Description

Followup of #4372

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

• New functionality includes testing.
• New functionality has been documented.
• New functionality has javadoc added.
• New functionality has a user manual doc added.
• New PPL command checklist all confirmed.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff or -s.
• Public documentation issue/PR created.

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[LantaoJin]

For the double values which are out of the double's precision. Keep the behavior same as Java's Math.floor(double) and Splunk's floor() math function.

[LantaoJin]

not sure why this query failed in linux/doctest only. I cannot reproduce in local and IT. Will keep the PPL> to avoid failure.

    ppl_cmd.process("source = state_country as a | where country = 'USA' OR country = 'England' | left join ON a.name = b.name [ source = occupation | where salary > 0 | fields name, country, salary | sort salary | head 3 ] as b | stats avg(salary) by span(age, 10) as age_span, b.country")Expected:
    fetched rows / total rows = 3/3
    +-------------+----------+-----------+
    | avg(salary) | age_span | b.country |
    |-------------+----------+-----------|
    | null        | 40       | null      |
    | 70000.0     | 30       | USA       |
    | 100000.0    | 70       | England   |
    +-------------+----------+-----------+
Got:
    fetched rows / total rows = 2/2
    +-------------+----------+-----------+
    | avg(salary) | age_span | b.country |
    |-------------+----------+-----------|
    | 70000.0     | 30       | USA       |
    | 100000.0    | 70       | England   |
    +-------------+----------+-----------+
----------------------------------------------------------------------

[LantaoJin]

I see the #4380 closed. but grok, parse, patterns are still not able to 100% match the result of doctest in v2. @songkant-aws can you fix it or link an issue. Or it just needs to update the doc.

[penghuo]

Reopen #4380

[LantaoJin]

@selsong , when I change PPL> to os> in timechart.rst. I found many results cannot not match the expected results added in doc. timechart command is a Calcite enabled only command, which means the results in this file shouldn't be impacted by the action of setting calcite enabled as default. Please check why the original expected results cannot match the actual ones. cc @penghuo

[penghuo]

Add issue to track. #4409

[LantaoJin]

@selsong there are many tests which cannot run in timechart.rst, see the queries starting with PPL>. cc @penghuo

[opensearch-trigger-bot]

The backport to 2.19-dev failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/sql/backport-2.19-dev 2.19-dev
# Navigate to the new working tree
pushd ../.worktrees/sql/backport-2.19-dev
# Create a new branch
git switch --create backport/backport-4379-to-2.19-dev
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 9143a449f38bf08470ecc25826c474d8fd38d6c8
# Push it to GitHub
git push --set-upstream origin backport/backport-4379-to-2.19-dev
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/sql/backport-2.19-dev

Then, create a pull request where the base branch is 2.19-dev and the compare/head branch is backport/backport-4379-to-2.19-dev.