Can I read SQL Symmetric Difference in PostGIS on EtoBox?

SQL Symmetric Difference in PostGIS by Mathias Eder is a document available to read on EtoBox.

What is SQL Symmetric Difference in PostGIS about?

ST_Union returns a geometry representing the point set union of the input geometries. It has aggregate and non-aggregate versions. The aggregate version unions all geometries in a set into a single geometry, while the non-aggregate version unions two geometries. The output can be a MULTI geometry, single geometry, or geometry collection with no overlapping regions between the input geometries.

Author

Mathias Eder

Language

EN