%sThe name "%ls" does not denote a namespace.

Error Message:
Msg 2229, Level 16, State 1, Line 4
%sThe name “%ls” does not denote a namespace.

Severity level:
16.

Description:
This error message appears when in an Xquery you try to use an unknown or invalid namespace.

Consequences:
The T-SQL statement can be parsed, but causes the error at runtime.

Resolution:
Errors of the Severity level 16 are generated by the user and can be fixed by the SQL Server user. The statement cannot be run this way. Namespaces must be known and valid.

Versions:
This error message was introduced with SQL Server 2005.

Example(s):
DECLARE @xml xml;
SET @xml = ”;
SELECT
    @xml.query(‘f:count(//question)’) as XML;

Remarks:
In the above example we try to use the unknown and invalid namespace. This raises the error.

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