I just read the problems similar to mine on this forum, but no solution helped me.
To put it simply, I use ST_Touches in an algo in PHP that allows me to test if two points touch. Here is the query:
SELECT * FROM t_node1, t_node2 WHERE st_touches (t_node1.geom, t_node2.geom)
The problem is that there is a tolerance and therefore my results are not accurate.
Is there a way to remove this tolerance?