SQL query to partition over entire data but show specific rows of them

I have a table with fields

1: Visit Place 2: Visit Date

I have to calculate the visit No. of any visit in specific date range.Visit range will be calculate on month basis means how many times a place is visited but data should be shown only of required date.开发者_JS百科

My query is as:

SELECT visit_date,
       VisitPlaceId,
       [Visit Frequency]
FROM   (SELECT visit_date,
               VisitPlaceId,
               'Visit-' + CONVERT(VARCHAR, ROW_NUMBER() OVER ( PARTITION BY
                          VisitPlaceId ORDER
                          BY
                          VisitPlaceId))AS [Visit Frequency]
        FROM   tbl_Visits
        WHERE  visit_date >= '01/Sep/2011'
               AND visit_date <= '30/Sep/2011'
        GROUP  BY visit_date,
                  VisitPlaceId) tbl
WHERE  visit_date >= '01/Sep/2011'
       AND visit_date <= '05/Sep/2011'  

Can it be modified to result faster.

Looking for your kind and precious solutions.

Thanks. Supriya

Ya,it is like

 CREATE TABLE dbo.tbl_Visits
    (
    Report_ID       INT IDENTITY NOT NULL,
    User_ID         INT NOT NULL,
    City_ID         INT NOT NULL,
    VisitPlaceId        INT NOT NULL,
    CategoryId      INT NOT NULL,
    Area            VARCHAR (512) NULL,
    Remarks         VARCHAR (264) NULL,
    visit_date      SMALLDATETIME NULL,
    POSM_Used       VARCHAR (250) NULL,
    PosmBanner      INT NULL,
    PosmBooklet     INT NULL,
    PosmBunting     INT NULL,
    PosmDangler     INT NULL,
    PosmDummyBox    INT NULL,
    PosmTearPad     INT NULL,
    PosmPoster      INT NULL,
    PosmShelfStrip  INT NULL,
    PosmStandee     INT NULL,
    PosmTableTop    INT NULL,
    PosmWobbler     INT NULL,
    PosmLeafLet     INT NULL,
    PosmBrochure    INT NULL,
    Exe_Remarks     VARCHAR (200) NULL,
    ApprovalRemarks VARCHAR (50) NULL,
    ApprovalStatus  VARCHAR (10) NULL,
    ApprovalDate    SMALLDATETIME NULL,
    ApprovedBy      INT NULL
    )
GO

And no index I have created yet.

You could add a non clustered index as below

CREATE NONCLUSTERED INDEX ix_name On tbl_Visits(visit_date,VisitPlaceId)  

This covers the query and allows the visit_date range of interest to be seeked to directly.