Parameters
| Name | Type | Mode |
|---|---|---|
| $1 | USER-DEFINED | IN |
| $2 | integer | IN |
args: a_linestring, n - Return the Nth point in a linestring or circular linestring in the geometry. Return NULL if geometry is not a linestring or circular linestring
| Name | Type | Mode |
|---|---|---|
| $1 | USER-DEFINED | IN |
| $2 | integer | IN |