T-SQL 查询获取所有数据库关系和关系多重类型

Question

我需要一个 T-SQL 查询来获取 SQL Server 数据库中的所有关系，并了解每个关系都是多顺序的，如一对一、一对多和多对多关系。

我可以获取所有关系，但不知道每个关系是一对一，一对多。

我的查询是这样的：

SELECT
   FK.[name] AS ForeignKeyConstraintName
  ,SCHEMA_NAME(FT.schema_id) + '.' + FT.[name] AS ForeignTable
  ,STUFF(ForeignColumns.ForeignColumns, 1, 2, '') AS ForeignColumns
  ,SCHEMA_NAME(RT.schema_id) + '.' + RT.[name] AS ReferencedTable
  ,STUFF(ReferencedColumns.ReferencedColumns, 1, 2, '') AS ReferencedColumns,
  'one-to-one or one-to-many or many-to-many' as RelationType
FROM
    sys.foreign_keys FK
INNER JOIN 
    sys.tables FT ON FT.object_id = FK.parent_object_id
INNER JOIN 
    sys.tables RT ON RT.object_id = FK.referenced_object_id
CROSS APPLY
    (SELECT
         ', ' + iFC.[name] AS [text()]
     FROM
         sys.foreign_key_columns iFKC
     INNER JOIN 
         sys.columns iFC ON iFC.object_id = iFKC.parent_object_id
                         AND iFC.column_id = iFKC.parent_column_id
     WHERE
         iFKC.constraint_object_id = FK.object_id
     ORDER BY
         iFC.[name]
     FOR XML PATH('')) ForeignColumns (ForeignColumns)
CROSS APPLY
    (SELECT
         ', ' + iRC.[name] AS [text()]
     FROM
         sys.foreign_key_columns iFKC
     INNER JOIN 
         sys.columns iRC ON iRC.object_id = iFKC.referenced_object_id
                         AND iRC.column_id = iFKC.referenced_column_id
     WHERE
         iFKC.constraint_object_id = FK.object_id
     ORDER BY
         iRC.[name]
     FOR XML PATH('')) ReferencedColumns (ReferencedColumns)

我能做什么？