GetSchema("StructuredTypeMembers") always returns TYPE_SCHEMA as [sys]

[tf-micwil]

When using GetSchema("StructuredTypeMembers", ...) to get the schema for User-Defined-Table-Types, the type schema returned is alway "sys".

To reproduce:

use MyTemp
go
create schema MySchema;
go
create type [dbo].[PostalCodeList] as table ([postalCode] varchar(10));
go
create type [MySchema].[PostalCodeList] as table ([postalCode] varchar(10), [country] char(2));
go

using System.Data;
using Microsoft.Data.SqlClient;
using var connection = new SqlConnection("Data Source=(local);Initial Catalog=MyTemp;Integrated Security=True;Encrypt=false");
connection.Open();
var schema = connection.GetSchema("StructuredTypeMembers", new string[] { null, null, "PostalCodeList" });
foreach (DataRow row in schema.Rows)
{
    Console.WriteLine(
        string.Format("{0}: [{1}].[{2}].[{3}]",
        row["Ordinal_Position"],
        row["TYPE_SCHEMA"],
        row["TYPE_NAME"],
        row["MEMBER_NAME"]));
}

Output:
1: [sys].[PostalCodeList].[postalCode]
1: [sys].[PostalCodeList].[postalCode]
2: [sys].[PostalCodeList].[country]

Expected results:
1: [dbo].[PostalCodeList].[postalCode]
1: [MySchema].[PostalCodeList].[postalCode]
2: [MySchema].[PostalCodeList].[country]

Looking at the SQL statement executed behind the scenes in SQL Profiler, it is returning the schema name from sys.objects.schema_id which always sys. The correct schema name should be obtained from sys.table_types.schema_id.

[JRahnama]

@tf-micwil we will investigate the issue and will get back to you shortly.

[ErikEJ]

@JRahnama why is this still open?

[JRahnama]

Apparently GitHub does not close it based on the fixing PR/ I have seen it in several places.

Closing as this was fixed in PR #1500