Mysql，如何找到矩形边界的交集

发布于 2025-01-03 13:04:07 字数 1236 浏览 5 评论 0原文

我已将来自谷歌地图的边界保存在我的数据库表中。现在我必须根据匹配边界来显示这些条目。

例如，我有一个基于位置/边界的仪表板条目表。我正在保存谷歌地图返回的每个仪表板条目的界限。现在，如果用户想查看与他的城市/国家/地区相关的仪表板帖子，那么我必须根据用户城市/国家/地区边界与仪表板条目边界进行匹配。因此，对于该用户，将显示其边界与用户城市/国家/地区边界重叠的所有仪表板条目。

现在我正在尝试使用 MySql OVERLAPS。但我无法获得正确的结果:(

转储带有一些测试条目的表：

INSERT INTO dashboard_entries 
  (id, category_id, entry_title, entry_description, customer_id, entry_date, latitude, longitude, bounds_ne_lat, bounds_ne_lng, bounds_sw_lat, bounds_sw_lng)
VALUES (150, 10, 'Blog Post for China Trip', 'Test Description', 43, '2012-02-08 15:17:46', '48.229147', '16.346052', 39.9084350, 78.6526391, 32.5301142, 116.3918633), (151, 16, 'Trip Post for Lahore Pakistan', 'Trip Post for Lahore Pakistan', 43, '2012-02-08 15:19:14', '48.229147', '16.346052', 34.0160320, 66.6578507, 24.7482340, 75.3818660);

这是我正在使用的查询：

select * 
from dashboard_entries 
where Overlaps(GeomFromText('Polygon((34.0160320 66.6578507,34.0160320 75.3818660,24.7482340 75.3818660,24.7482340 66.6578507,34.0160320 66.6578507))'), GeomFromText('Polygon((bounds_ne_lat bounds_ne_lng,bounds_ne_lat bounds_sw_lng,bounds_sw_lat bounds_sw_lng,bounds_sw_lat bounds_ne_lng,bounds_ne_lat bounds_ne_lng))'))

原文

I have saved bounds in my database table coming from google maps. Now i have to show these entries based on matching the bounds.

For example, I have a table for dashboard entries that are based on locations/bounds. I am saving bounds against each dashboard entry that is returned by google maps. Now, if user wanted to see the dashboard posts that are related to his city/country then i have to do matching based on user city/country bounds with dashboard entries bounds. So for that user, all those dashboard entries will appear whose bounds overlaps with user city/country bounds.

Right now i am trying with MySql OVERLAPS. But I amm unable to get proper result :(

Dump of table with some test entries:

INSERT INTO dashboard_entries 
  (id, category_id, entry_title, entry_description, customer_id, entry_date, latitude, longitude, bounds_ne_lat, bounds_ne_lng, bounds_sw_lat, bounds_sw_lng)
VALUES (150, 10, 'Blog Post for China Trip', 'Test Description', 43, '2012-02-08 15:17:46', '48.229147', '16.346052', 39.9084350, 78.6526391, 32.5301142, 116.3918633), (151, 16, 'Trip Post for Lahore Pakistan', 'Trip Post for Lahore Pakistan', 43, '2012-02-08 15:19:14', '48.229147', '16.346052', 34.0160320, 66.6578507, 24.7482340, 75.3818660);

Here is the query that i am using:

select * 
from dashboard_entries 
where Overlaps(GeomFromText('Polygon((34.0160320 66.6578507,34.0160320 75.3818660,24.7482340 75.3818660,24.7482340 66.6578507,34.0160320 66.6578507))'), GeomFromText('Polygon((bounds_ne_lat bounds_ne_lng,bounds_ne_lat bounds_sw_lng,bounds_sw_lat bounds_sw_lng,bounds_sw_lat bounds_ne_lng,bounds_ne_lat bounds_ne_lng))'))

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偏闹i 2025-01-10 13:04:07

我使用mysql的INTERSECT函数来查找两个矩形的交集。我相信重叠功能还没有实现。它需要两个矩形边界参数，如下所示。第二个参数也是保存在数据库中的多边形。

SELECT * 
FROM dashboard_entries 
WHERE intersects(GeomFromText('Polygon((34.0160320 66.6578507,34.0160320 75.3818660,24.7482340 75.3818660,24.7482340 66.6578507,34.0160320 66.6578507))'), location_bounds)

I have used INTERSECT function of mysql to find the intersection on two rectangles. I believe Overlaps function is not implemented yet. It takes two rectangular bounds params as shown below. Second parameter is also a polygon that is saved in database.

SELECT * 
FROM dashboard_entries 
WHERE intersects(GeomFromText('Polygon((34.0160320 66.6578507,34.0160320 75.3818660,24.7482340 75.3818660,24.7482340 66.6578507,34.0160320 66.6578507))'), location_bounds)

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