Name
ST_GeometryN — Given a 1-based index of a member of a MULTI... or ...COLLECTION shape, returns the member.
Synopsis
ST_GeometryN ( |
in shape any , |
in idx any ); |
Description
Given a 1-based index of a member of a MULTI... or ...COLLECTION shape, returns the member.
Parameters
shape
Shape.
idx
Index.
Return Types
Returns any.
Examples
Example24.660.Simple Use
SQL> select st_geometryn (
st_geometryn (
st_ewkt_read ('
GEOMETRYCOLLECTION(
POINT(0 0),
MULTILINESTRING(
(1 5,0 1,4 0,5 4),
(1 5,1 0,4 0,4 5)),
MULTIPOLYGON(
((1 3,2 4,1 5,0 4,1 3)),
((1 2,2 1,1 0,0 1,1 2))))'),
3),1)
_______________________________________________________________________________
POLYGON((1.0 3.0,2.0 4.0,1.0 5.0,0.0 4.0,1.0 3.0))