上記の実行結果 SELECT [t0].[ID], [t0].[Number], [t1].[ID] AS [ID2], [t1].[FirstName], [t1].[LastName], [t1].[Birthday], ( SELECT COUNT(*) FROM [dbo].[Table_3] AS [t2] WHERE [t2].[ID] = [t0].[ID] ) AS [value] FROM [dbo].[Table_1] AS [t0] LEFT OUTER JOIN [dbo].[Table_3] AS [t1] ON [t1].[ID] = [t0].[ID] ORDER...