longitude | latitude
----------+---------
1 | 2
2 | 3
4 | 5
2 | 3
5 | 6
1 | 2
如何找到桌子上有多少个相交点?在这种情况下1,2 e 2,3
SELECT ST_Intersects
答案 0 :(得分:2)
E.g:
select longitude, latidude, count(0) intersects from
table_name group by longitude, latidude having count(0) > 1