Creating SVG map from geometry stored in MySQL

I have a group of geometries stored in MySQl (as polygon and as well-known text) representing counties.

I can bui开发者_JAVA百科ld a table of geometries and color codes after querying some county data (say GDP per capita).

What is the best way to export this as an SVG map?

I cannot find any reference to SVG conversion in the MySQL documentation.