SQL Tips #34 - Finding Tables with Missing Primary Keys

Tables without primary keys cause all sorts of trouble - this query finds them.

The Query

SELECT SCHEMA_NAME(schema_id) AS SchemaName,name AS TableName
FROM sys.tables
WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasPrimaryKey') = 0
ORDER BY SchemaName, TableName;

Disclaimer

These queries are provided as a guide, and are by no means perfect. I didn't write all of these - many are collated from MSDN documentation and community sources over the years.

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