小编sea*_*ean的帖子

桌子：

CREATE TABLE [dbo].[Session] (
    [SessionId]          UNIQUEIDENTIFIER NOT NULL,
    [CID]                INT              NULL,
    [DEST]               VARCHAR (50)     NOT NULL,
    [EndUser]            VARCHAR (50)     NULL,
    [Platform]           VARCHAR (5)      CONSTRAINT [DF_Session_Platform] DEFAULT ('WEB') NOT NULL,
    [SessionState]       VARCHAR (50)     NOT NULL,
    [ServerName]         VARCHAR (180)    NOT NULL,
    [StartDate]          DATETIME         CONSTRAINT [DF_Session_StartDate] DEFAULT (getutcdate()) NOT NULL,
    [UpdateDate]         DATETIME         NULL,
    [EndDate]            DATETIME         NULL,
    [SessionData]        XML              NULL,
    [StartMinute]        AS               (dateadd(minute,datediff(minute,(0),[StartDate]),(0))) PERSISTED,
    [ActivityBreadcrumb] NVARCHAR (MAX)   NULL,
    CONSTRAINT [PK_Session] PRIMARY KEY CLUSTERED ([StartDate] ASC, [SessionId] ASC)
);
GO

CREATE NONCLUSTERED INDEX [IX_Session_StartDate_EndDate] …