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IsNull (geography Data Type)

  • Άρθρο

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric

A property that specifies if the geography instance is null. Returns 'TRUE' if the instance is null; returns 0 if the instance is not null.

Syntax

  
.IsNull

Return Types

SQL Server type: bit

CLR type: SqlBoolean

Remarks

IsNull can be used to test whether a geography instance is null. This can produce somewhat confusing results, returning 0 if the instance is not null, but null if the instance is null.

This method is primarily used by the SQL Server infrastructure; it is recommended that you use the T-SQL predicate IS NULL to test whether a geography instance is null. For more information on the T-SQL predicate IS NULL, see IS NULL (Transact-SQL).

Examples

See Also

Extended Methods on Geography Instances