docs: fix navigation order for GROUPING SETS, CUBE, ROLLUP, and SubQuery

[KananSu]

Fixed the navigation relationship between the GROUPING SETS, CUBE, ROLLUP, and Subquery documents to ensure the correct sequence: GROUPING SETS, followed by CUBE, then ROLLUP, and finally Subquery according to 'content/postgresql/sidebar.yaml'.

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[Copilot]

Pull Request Overview

This PR updates the navigation order within the PostgreSQL tutorials so that the sequence now follows: GROUPING SETS, CUBE, ROLLUP, and finally Subquery. Key changes include:

• Updating the previous and next navigation links in the subquery, cube, rollup, and grouping sets documents.
• Adjusting the YAML structure for navigation links to reflect the new sequence.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
content/postgresql/postgresql-tutorial/postgresql-subquery.md	Updated previousLink to point to 'PostgreSQL ROLLUP'.
content/postgresql/postgresql-tutorial/postgresql-rollup.md	Updated nextLink to point to 'PostgreSQL Subquery'.
content/postgresql/postgresql-tutorial/postgresql-grouping-sets.md	Changed nextLink from 'PostgreSQL ROLLUP' to 'PostgreSQL CUBE'.
content/postgresql/postgresql-tutorial/postgresql-cube.md	Updated previousLink to 'PostgreSQL GROUPING SETS' and nextLink to 'PostgreSQL ROLLUP'.

Comments suppressed due to low confidence (1)

content/postgresql/postgresql-tutorial/postgresql-grouping-sets.md:13

• The newly added nextLink entry in this diff does not include a list item indicator (dash) like the preceding nextLink element. Please verify that the YAML structure is consistent with the intended navigation configuration.

  title: 'PostgreSQL CUBE'

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Project	Deployment	Preview	Comments	Updated (UTC)
neon-next	Ready	Preview	Comment	Oct 7, 2025 2:11pm

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

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[philip]

Thanks @KananSu, much appreciated!

I made a couple changes due to how the site changed after this PR was created.