topic Re: Support for primary keys and foreign keys in SQL database

Support for primary keys and foreign keys

pmscorca — Tue, 03 Jun 2025 14:09:17 GMT

Hi,

I'd like to know if Fabric SQL database supports the primary keys and the foreign keys for tables.

I hope that this is possible, otherwise for which reasons.

Thanks

Re: Support for primary keys and foreign keys

maruthisp — Fri, 06 Jun 2025 07:09:11 GMT

Hi pmscorca,

Please check the below Microsoft documentation link:

Table constraints

SQL analytics endpoint and Warehouse in Microsoft Fabric support these table constraints:

PRIMARY KEY is only supported when NONCLUSTERED and NOT ENFORCED are both used.
FOREIGN KEY is only supported when NOT ENFORCED is used.
UNIQUE constraint is only supported when NONCLUSTERED and NOT ENFORCED are both used.

https://learn.microsoft.com/en-us/fabric/data-warehouse/table-constraints

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Maruthi
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Re: Support for primary keys and foreign keys

pmscorca — Fri, 06 Jun 2025 10:38:22 GMT

Hi, but I'm referring to a Fabric SQL Database and not warehouse/lakehouse.

Thanks

Re: Support for primary keys and foreign keys

Srisakthi — Tue, 10 Jun 2025 10:30:39 GMT

Hi pmscorca ,

It supports primary key, please do check the limitations.

https://learn.microsoft.com/en-us/fabric/database/sql/limitations

Regards,

Srisakthi

Re: Support for primary keys and foreign keys

Adityakumar — Tue, 10 Jun 2025 20:00:08 GMT

It Supports primary key, created a database for your reference and table with Primary key. Please find below screenshot for the same.

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Re: Support for primary keys and foreign keys

idrismotiwala — Thu, 12 Jun 2025 00:06:31 GMT

Hi pmscorca , Fabric SQL database supports primary keys/foreign keys and all other objects that you may be familiar in Azure SQL Database or SQL Server.