[postgis-users] ST_Union() about 1179 raster-tiles cause ProgreSQL crashes

[Mike Toews]

On 18 March 2014 15:15, Jackie <justaniceguy.nguyen at gmail.com> wrote:
> Here's my polygon:
> ST_GeomFromText('POLYGON((105.78873 21.38659, 106.49185 21.38659, 105.78873
> 20.71758, 106.49185 20.71758, 105.78873 21.38659))', 4326)

This polygon is an invalid bow-tie, with a self-intersection in the centre.

-Mike