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Documentation Index

Fetch the complete documentation index at: https://docs.ocient.com/llms.txt

Use this file to discover all available pages before exploring further.

The has that supports three different geospatial geographies: POLYGON, LINESTRING, and POINT.
  • A POLYGON can be constructed with a closed LINESTRING or an outer shell and array of inner rings.
  • A LINESTRING represents a series of points connected by line segments. It can be constructed with either LINESTRING or POINT data types.
  • A POINT represents a point in space defined by an (x, y) or (longitude, latitude) coordinate pair.
Each LINESTRING or POLYGON value can be up to a maximum of 512 MB in size. This means a LINESTRING or POLYGON can contain approximately 32 million point values.
These supported geospatial data types require Well-Known Text (WKT) formatting. For formatting examples, see Data Types or WKT Representation of Geometry. The OcientGeo functionality reference also contains examples with supported formatting and syntax. Each geospatial geography has a number of functions and operators that can be used in SQL queries to perform analyses. Some functions apply to specific geography types. For operators specific to geospatial data types, refer to Geospatial Operators. OcientGeo uses the authalic radius of the Earth, 6371007.1810824 meters, as the reference for many measurement calculations.
The authalic radius reference might cause slight differences in measurements compared to other geospatial systems that use a different radius definition.

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Geospatial Operators

OcientGeo supports special operators that perform operations on two different geographies. These can be used in queries to compare geographies or calculate values based on the geographies.
OperatorSyntaxPurpose
intersectsgeoA && geoBReturns TRUE if the bounding box of geography A intersects with the bounding box of B.
containedgeoA @ geoBReturns TRUE if the bounding box of geography A is contained within the bounding box of B.
equalgeoA ~= geoBReturns TRUE if the bounding box of geography A is the same as bounding box of B.
containsgeoA ~ geoBReturns TRUE if the bounding box of geography A contains the bounding box of B.
distancegeoA <-> geoBReturns the distance in meters between the two geography parameters.
bounding box distancegeoA <#> geoBReturns the distance in meters between the bounding box of the two geography parameters.
centroid distancegeoA <<->> geoBReturns the distance in meters between the centroids of the two geography parameters.

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Geospatial Functions Overview

OcientGeo supports many geospatial functions that operate on POINT, LINESTRING, and POLYGON values. Each function, its expected inputs, and return type are described in the following section.

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Geospatial Filtering

Queries that involve geospatial filtering can make use of functions in the Spatial Relationships section. To optimize these queries, OcientGeo provides a SPATIAL index that you can apply to columns with geospatial data types. For details about the SPATIAL index, see Secondary Indexes.

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Attribute Functions

Attribute functions return descriptive information on the specified data set.
  • ST_COORDDIM
  • ST_DIMENSION
  • ST_GEOMETRYTYPE
  • ST_ISEMPTY
  • ST_MEMSIZE
  • ST_NDIMS
  • ST_NDIMENSION
  • ST_NPOINTS
  • ST_NUMPOINTS
  • ST_SRID
  • ST_X
  • ST_XMAX
  • ST_XMIN
  • ST_Y
  • ST_YMAX
  • ST_YMIN

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Conversion Functions

Conversion functions transform a specified operand to a different data type.
  • ST_ASBINARY
  • ST_ASWKB
  • ST_ASGEOJSON
  • ST_ASEWKT
  • ST_ASLATLONTEXT
  • ST_ASTEXT
  • ST_ASWKT
  • ST_GEOHASH

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Linestring Constructors

LINESTRING constructors use geospatial data to create a LINESTRING object.
  • ST_LINEFROMTEXT
  • ST_LINEFROMGEOJSON
  • ST_LINEFROMWKB
  • ST_LINEFROMEWKT
  • ST_LINESTRING
  • ST_MAKELINE

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Linestring Functions

LINESTRING functions can perform alterations or access descriptive information on LINESTRING objects.
  • ST_ADDPOINT
  • ST_ENDPOINT
  • ST_LINEINTERPOLATEPOINT
  • ST_LINELOCATEPOINT
  • ST_LINESUBSTRING
  • ST_POINTN
  • ST_REMOVEPOINT
  • ST_SETPOINT
  • ST_STARTPOINT

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Point Constructors

POINT constructors use geospatial data to create a POINT object.
  • ST_CENTROID
  • ST_GEOGPOINT
  • ST_MAKEPOINT
  • ST_POINT
  • ST_POINTFROMEWKT
  • ST_POINTFROMGEOHASH
  • ST_POINTFROMGEOJSON
  • ST_POINTFROMTEXT
  • ST_POINTFROMWKB

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Polygon Constructors

POLYGON constructors use geospatial data to create a POLYGON object.
  • ST_FORCECCW
  • ST_MAKEPOLYGON
  • ST_POLYGON
  • ST_POLYGONFROMGEOJSON
  • ST_POLYGONFROMWKB
  • ST_POLYGONFROMEWKT
  • ST_POLYGONFROMTEXT
  • ST_WHOLEEARTH

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Spatial Measurement

Spatial measurement functions can perform basic calculations on geospatial data, such as measuring the distance between two POINT objects or the area of a POLYGON object.
  • ST_AREA
  • ST_ANGLE
  • ST_AZIMUTH
  • ST_DISTANCE
  • ST_DISTANCESPHERE
  • ST_DISTANCESPHEROID
  • ST_EUCLIDEANDISTANCE3D
  • ST_HAUSDORFFDISTANCE
  • ST_LENGTH
  • ST_LENGTH2D
  • ST_MINIMUMDISTANCETOSURFACE
  • ST_MAXDISTANCE
  • ST_PERIMETER
  • ST_PERIMETER2D

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Spatial Operators

Spatial operators perform geometry calculations on geospatial data to return a different type of geospatial data.
  • ST_BOUNDINGDIAGONAL
  • ST_BUFFER
  • ST_CLOSESTPOINT
  • ST_CONVEXHULL
  • ST_DIFFERENCEARRAY
  • ST_ENVELOPE
  • ST_EXPAND
  • ST_EXTERIORRING
  • ST_FLIPCOORDINATES
  • ST_FORCE2D
  • ST_INTERIORRINGN
  • ST_INTERSECTALL
  • ST_INTERSECTIONARRAY
  • ST_LONGESTLINE
  • ST_MAKEENVELOPE
  • ST_MINIMUMBOUNDINGCIRCLE
  • ST_MULTIDIFFERENCEARRAY
  • ST_MULTIINTERSECTIONARRAY
  • ST_MULTISYMDIFFERENCEARRAY
  • ST_MULTIUNIONARRAY
  • ST_NRINGS
  • ST_NUMINTERIORRING
  • ST_NUMINTERIORRINGS
  • ST_POINTONSURFACE
  • ST_PROJECT
  • ST_REDUCEPRECISION
  • ST_REMOVEREPEATEDPOINTS
  • ST_REVERSE
  • ST_SEGMENTIZE
  • ST_SHORTESTLINE
  • ST_SIMPLIFY
  • ST_SIMPLIFYARRAY
  • ST_SNAPTOGRID
  • ST_SYMDIFFERENCEARRAY
  • ST_UNIONARRAY

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Spatial Relationships

Spatial relationship functions use arguments to test for different types of spatial relationships. 
  • ST_CLUSTERDBSCAN
  • ST_CONTAINS
  • ST_CONTAINSPROPERLY
  • ST_COVERS
  • ST_COVEREDBY
  • ST_CROSSES
  • ST_DISJOINT
  • ST_DWITHIN
  • ST_EQUALS
  • ST_INTERSECTS
  • ST_ISCCW
  • ST_ISPOLYGONCCW
  • ST_ISPOLYGONCW
  • ST_ISCLOSED
  • ST_ISRING
  • ST_ISSIMPLE
  • ST_ISVALID
  • ST_OVERLAPS
  • ST_POINTINSIDECIRCLE
  • ST_RELATE
  • ST_TOUCHES
  • ST_WITHIN

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Spatiotemporal Measurement

Spatiotemporal measurement functions can perform basic calculations on geospatial data paired with TIMESTAMP data.
  • ST_DISTANCE
  • ST_MAXDISTANCE
  • ST_TOTALSECONDSININTERSECTION

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Spatiotemporal Operators

Spatiotemporal operators perform calculations on geospatial data using an array of TIMESTAMP arguments.
  • ST_LONGESTLINE
  • ST_LINEGETALLTIMESATPOINT
  • ST_LINEGETPOINTATTIME
  • ST_LINEGETTIMEATPOINT
  • ST_INTERSECTION
  • ST_SHORTESTLINE
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Last modified on May 21, 2026