Update json-data-type.md

[bpp-incom]

Described the limitation of the JSON type.

[bpp-incom]

If you want to test it yourself you can run this code (it requires that the cross join product of sys.all_objects produces more than 65535 rows):

DECLARE @data NVARCHAR(MAX)
;WITH cte AS (
SELECT ROW_NUMBER() OVER(ORDER BY (SELECT 1)) AS rn FROM sys.all_objects t1 CROSS JOIN sys.all_objects t2
)
SELECT @data = (SELECT * FROM cte
WHERE rn <= 70000
FOR JSON AUTO)
SELECT @data

SELECT CAST(@data AS json)
SELECT TRY_CAST(@data AS json)

[learn-build-service-prod]

Learn Build status updates of commit 00bc200:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
docs/t-sql/data-types/json-data-type.md	⚠️Warning		Details

docs/t-sql/data-types/json-data-type.md

• Line 1, Column 1: [Warning: author-missing - See documentation] Missing required attribute: 'author'. Add the current author's GitHub ID.
• Line 1, Column 1: [Warning: title-missing - See documentation] Missing required attribute: 'title'. Add a title string to show in search engine results.
• Line 1, Column 1: [Warning: ms-author-missing - See documentation] Missing required attribute: 'ms.author'. Add the current author's Microsoft alias.
• Line 1, Column 1: [Warning: ms-topic-missing - See documentation] Missing required attribute: 'ms.topic'.
• Line 18, Column 1: [Warning: h1-not-first - See documentation] Markdown content is not allowed before H1 'JSON data type'.
• Line 1, Column 1: [Suggestion: ms-date-missing - See documentation] Missing required attribute: 'ms.date'.
• Line 1, Column 1: [Suggestion: description-missing - See documentation] Missing required attribute: 'description'.
• Line 1, Column 1: [Suggestion: ms-service-suggested] Missing required attribute: 'ms.service'. ms.service is suggested for Yaml:Mime type: Module.

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[v-dirichards]

@WilliamDAssafMSFT

Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[Copilot]

Pull Request Overview

This PR documents a limitation of the JSON data type in SQL Server, specifically regarding the maximum number of items allowed in a single object or array. The documentation adds a new section explaining that JSON objects and arrays are limited to 65,535 items (the maximum value of a 16-bit unsigned integer) and describes the error that occurs when this limit is exceeded.

• Added documentation about the 65,535 item limit for JSON objects/arrays
• Included example error message that users will encounter when exceeding the limit
• Noted that TRY_CAST also throws the same error

---

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[Copilot]

The image tag appears to have been accidentally inserted before the document frontmatter delimiter. This will break the YAML frontmatter parsing. The line should only contain '---'.

[Copilot]

Corrected capitalization of 'Items' to 'items' in the heading for consistency with standard heading capitalization.

Suggested change

	### Size limit for Items in one object/array
	### Size limit for items in one object/array

[Copilot]

The term 'JSON type' should be consistently formatted as 'json' (lowercase, in code style) to match the formatting used elsewhere in the document when referring to the data type itself.

Suggested change

	The **JSON type** has a size limit of **65,535 items** per object or array — this corresponds to the maximum value of a 16-bit unsigned integer.
	If you attempt to cast text into the JSON type and it contains more than 65,535 elements, the following error will be thrown:
	The **json** data type has a size limit of **65,535 items** per object or array — this corresponds to the maximum value of a 16-bit unsigned integer.
	If you attempt to cast text into the **json** data type and it contains more than 65,535 elements, the following error will be thrown:

[WilliamDAssafMSFT]

Thanks @bpp-incom for contacting Microsoft with a contribution to our product documentation. I've reached out to the product group to confirm. It could take from a few business days to a few weeks to confirm your change internally. We'll contact you if we need further information, and you'll receive an email message each time we "@mention" you in a comment.

By opening a pull request, you're helping the authors add your approved change directly to the documentation. If the article is updated with your commit, GitHub will list you as an article contributor.

Thanks again for this feedback. Your suggestions help improve our documentation.

[WilliamDAssafMSFT]

Thanks @bpp-incom for taking the time to submit this PR! Good catch. This article update is in flight. After the updated article is published, GitHub will list you as a commit co-author.

Thanks again for this feedback, your suggestions help improve our documentation.