cartodb-4.42/lib/sql/doc/CDB_XYZ_Extent.md

Determine the spatial extent of a tile based on the tile's XYZ coordinate.

Using the function

Take a common tile with coordinates x=3, y=2, z=2,

To determine its extent you would run,

SELECT CDB_XYZ_Extent(3,2,2)
--- Returns a WKB polygon in Webmercator (SRID 3857)

Arguments

CDB_XYZ_Extent(x,y,z)

• x integer
• y integer
• z integer