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ST_PointN
Applies to ❌ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
This function returns the Nth point (1-based) of a linestring geometry.
create.select(stPointN(stGeomFromText("LINESTRING (0 0, 0 1, 1 1, 1 2)"), 2)).fetch();
The result being, for example
+-------------+ | ST_PointN | +-------------+ | POINT (0 1) | +-------------+
Or, visually:
stPointN(geometry, 2)
Translates to the following dialect specific expressions:
Aurora MySQL, Aurora Postgres, CockroachDB, DuckDB, MariaDB, MySQL, Postgres, Redshift, Snowflake
st_pointn(geometry, 2)
Oracle
sdo_geometry(st_curve(geometry).st_pointn(2).get_wkt())
SQLServer
geometry.STPointN(2)
ASE, Access, BigQuery, ClickHouse, DB2, Databricks, Derby, Exasol, Firebird, H2, HSQLDB, Hana, Informix, MemSQL, SQLDataWarehouse, SQLite, Sybase, Teradata, Trino, Vertica, YugabyteDB
/* UNSUPPORTED */
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