Available in versions: Dev (3.20) | Latest (3.19) | 3.18 | 3.17 | 3.16

This documentation is for the unreleased development version of jOOQ. Click on the above version links to get this documentation for a supported version of jOOQ.

ST_NumGeometries

Applies to ❌ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

This function returns the number of interior rings of a polygon geometry. For example:

create.select(stNumGeometries(stGeomFromText("MULTIPOINT ((-1 -1), (1 -1), (1 1), (-1 1))"))).fetch();

The result being, for example

+------------------+
| ST_NumGeometries |
+------------------+
| 4                |
+------------------+

To access the Nth geometry (1-based), use ST_GeometryN.

Dialect support

This example using jOOQ:

stNumGeometries(geometry)

Translates to the following dialect specific expressions:

Aurora MySQL, Aurora Postgres, CockroachDB, MariaDB, MySQL, Postgres, Redshift, Snowflake

st_numgeometries(geometry)

Oracle

sdo_util.getnumelem(geometry)

SQLServer

geometry.STNumGeometries()

ASE, Access, BigQuery, DB2, Derby, DuckDB, Exasol, Firebird, H2, HSQLDB, Hana, Informix, MemSQL, SQLDataWarehouse, SQLite, Sybase, Teradata, Trino, Vertica, YugabyteDB

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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