Wybierz liczbę z innej tabeli do każdego wiersza w wierszach wyników
Oto tabele:
CREATE TABLE [dbo].[Classes](
[ClassId] [int] NOT NULL,
[ClassName] [nvarchar](50) NOT NULL,
CONSTRAINT [PK_Classes] PRIMARY KEY CLUSTERED
(
[ClassId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Students](
[StudentId] [int] NOT NULL,
[ClassId] [int] NOT NULL,
CONSTRAINT [PK_Students] PRIMARY KEY CLUSTERED
(
[StudentId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Students] WITH CHECK ADD CONSTRAINT [FK_Students_Classes] FOREIGN KEY([ClassId])
REFERENCES [dbo].[Classes] ([ClassId])
GO
ALTER TABLE [dbo].[Students] CHECK CONSTRAINT [FK_Students_Classes]
GO
Chcę uzyskać listę klas i każdej klasy - liczbę uczniów należących do każdej klasy. Jak mogę to zrobić?