【发布时间】：2017-02-01 07:09:01
【问题描述】：
我有下面的存储程序我想检查我的汽车纬度经度的距离，如果距离以米为单位小于 500，则最近的地理围栏显示地理围栏 id 哪个地理围栏 id 最近的汽车纬度经度。如果汽车纬度经度最近的多边形显示多边形 ID，如果矩形显示矩形 id 我是 sql server 的新手，所以我在这里请专业人士帮助我，我非常感谢你，演示表在共享链接中，
question and demo table is here
CREATE TABLE CarDistance
(
ID int IDENTITY(1,1) PRIMARY KEY,
car_id int,
latitude float,
longitude float
)
insert into CarDistance values(1234, '52.582191','-2.878418')
CREATE TABLE tblgeofencing2
(
ID int IDENTITY(1,1) PRIMARY KEY,
car_id int,
ShapeType varchar(255),
PolygonLatLng varchar(max),
minlatitude [float] NULL,
[minlongitude] [float] NULL,
[maxlatitude] [float] NULL,
[maxlongitude] [float] NULL,
)
insert into tblgeofencing2 values(123, 'polygon','24.835300590037598 67.06858277320862,24.835933468801272 67.06929624080658,24.83532979989791 67.07035303115845,24.83454113125045 67.0697683095932,24.835300590037598 67.06858277320862',NULL,NULL,NULL,NULL)
insert into tblgeofencing2 values(1234, 'rectangle','NULL','52.582191','-2.878418','52.233687','-2.702637')
Alter PROCEDURE [dbo].[Sp_CheckCarStatusMeter]
DECLARE @g GEOGRAPHY,
@ID INT,
@curVal INT,
@preVal INT ,
@CarSuggested INT,
@carlatprevious VARCHAR(10),
@carlongprevious VARCHAR(10),
@AllLatitudeLongitude VARCHAR(255),
@pprevious GEOGRAPHY
DECLARE SuggestCursor CURSOR FOR
SELECT TOP 100 rtha.car_id , rtha.latitude,
rtha.longitude
FROM CarDistance rtha WHERE rtha.car_id = 123;
OPEN SuggestCursor;
FETCH NEXT FROM SuggestCursor INTO @CarSuggestedID , @carlatprevious , @carlongprevious;
WHILE (@@FETCH_STATUS = 0)
BEGIN
DECLARE ShapeCursor CURSOR FOR
SELECT g.ID, @CarSuggestedID, g.ShapeType FROM tblgeofencing AS g
WHERE car_id =@CarSuggestedID
FETCH NEXT FROM ShapeCursor INTO @ID , @CarIdx , @ShapeType;
WHILE (@@FETCH_STATUS = 0)
BEGIN
IF (@ShapeType = 'polygon')
BEGIN --Polygon IF
PRINT 'polygon if';
SELECT @GeofenceIDnew = g.GeoFenceId, @minY = g.PolygonLatLng ROM tblgeofencing AS g
WHERE g.ID = =@CarSuggestedID
SET @g = geography ::STPolyFromText('POLYGON((' + @AllLatitudeLongitude + '))', 4326);
SET @pprevious = geography ::STPointFromText(
'POINT(' + @carlatprevious + ' ' + @carlongprevious + ')', 4326 );
SELECT @preVal = @g.STIntersects(@pprevious)
PRINT @preVal
IF @curVal = 1 AND @preVal = 0
BEGIN
PRINT 'Enter In GEOFENCE';
SELECT @geofencename = geofenceName,
@geofenceidforresult = ID
FROM tblgeofencing where ID = @CarSuggestedID;
INSERT INTO tblGeofenceCarStatus
VALUES
(
@CarSuggestedID, @geofenceidforresult,@geofencename,
@gpstime, @g.STDistance(@pprevious), 'Enter' );
END
ELSE
BEGIN
Print Not in Geofence
END
END; --- END POLYGON IF
FETCH NEXT FROM ShapeCursor INTO @ID , @CarIdx , @ShapeType;
END; --- END CHECK GEOFENCING RECTANGLE OR CIRCLE OR PLYGON
FETCH NEXT FROM SuggestCursor INTO @CarSuggestedID , @carlatprevious , @carlongprevious;
END;
CLOSE ShapeCursor;
DEALLOCATE ShapeCursor;
CLOSE SuggestCursor;
DEALLOCATE SuggestCursor;
SELECT * FROM tblGeofenceCarStatus;
END;
END; --- END SP BEGIN STATEMENT
【问题讨论】：
标签： sql-server sql-server-2012 sql-server-2008-r2 geography