MAPVERSION

Returns the version or invalidity of any map data. This scalar function returns the map version (such as 1) or -1, if the map data is invalid.

Syntax

MAPVERSION(VMap_data)

Arguments

VMap_data

The VMap data either from a __raw__ column in a flex table or from the data returned from a map function such as maplookup().

Examples

The following example shows how to use mapversion() with the darkmountainflex table, returning mapversion 1 for the flex table map data:

=> SELECT MAPVERSION(__raw__) FROM darkmountain;
 mapversion
------------
          1
          1
          1
          1
          1
(5 rows)

See Also