PostGIS_Lib_Version — Returns the version number of the PostGIS library.
text PostGIS_Lib_Version();
text PostGIS_Lib_Version(
)
Returns the version number of the PostGIS library.
SELECT PostGIS_Lib_Version();
3.4.0dev
PostGIS_Full_Version, PostGIS_GEOS_Version, PostGIS_LibXML_Version, PostGIS_PROJ_Version, PostGIS_Version