Available in versions: Dev (3.18) | Latest (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_IsClosed

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

This predicate checks if a linestring has the same start point and end point. For example:

create.select(
  field(stIsClosed(stGeomFromText("LINESTRING (-3 -1, -1 -1, -3 1, -3 -1)"))),
  field(stIsClosed(stGeomFromText("LINESTRING (3 1, 1 1, 3 -1)")))
).fetch();

The result being, for example

+-------------+-------------+
| ST_IsClosed | ST_IsClosed |
+-------------+-------------+
| true        | false       |
+-------------+-------------+

Or, visually:






Dialect support

This example using jOOQ:

stIsClosed(geometry)

Translates to the following dialect specific expressions:

-- AURORA_MYSQL, AURORA_POSTGRES, COCKROACHDB, MARIADB, MYSQL, ORACLE, POSTGRES, REDSHIFT
st_isclosed(geometry)

-- SQLSERVER
geometry.STIsClosed() = 1

-- ACCESS, ASE, BIGQUERY, DB2, DERBY, EXASOL, FIREBIRD, H2, HANA, HSQLDB, INFORMIX, MEMSQL, SNOWFLAKE, SQLDATAWAREHOUSE, 
-- SQLITE, SYBASE, TERADATA, VERTICA, YUGABYTEDB
/* UNSUPPORTED */

(These are currently generated with jOOQ 3.18, see #10141), or translate your own on our website

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