PostGIS Cheat Sheet

PostGIS Geometry/Geography/Box Data Types
box2d The type representing a 2-dimensional bounding box.
box3d The type representing a 3-dimensional bounding box.
geometry The type representing spatial features with planar coordinate systems.
geometry_dump A composite type used to describe the parts of complex geometry.
geography The type representing spatial features with geodetic (ellipsoidal) coordinate systems.

Table Management Functions
AddGeometryColumn ^3d Adds a geometry column to an existing table. table_name, column_name, srid, type, dimension, use_typmod=true schema_name, table_name, column_name, srid, type, dimension, use_typmod=true catalog_name, schema_name, table_name, column_name, srid, type, dimension, use_typmod=true
DropGeometryColumn ^3d Removes a geometry column from a spatial table. table_name, column_name schema_name, table_name, column_name catalog_name, schema_name, table_name, column_name
DropGeometryTable Drops a table and all its references in geometry_columns. table_name schema_name, table_name catalog_name, schema_name, table_name
Find_SRID (a_schema_name, a_table_name, a_geomfield_name) Returns the SRID defined for a geometry column.
Populate_Geometry_Columns Ensures geometry columns are defined with type modifiers or have appropriate spatial constraints. use_typmod=true relation_oid, use_typmod=true
UpdateGeometrySRID ^3d Updates the SRID of all features in a geometry column, and the table metadata. table_name, column_name, srid schema_name, table_name, column_name, srid catalog_name, schema_name, table_name, column_name, srid

Geometry Constructors
ST_Collect ^3d Creates a GeometryCollection or Multi* geometry from a set of geometries. g1, g2 g1_array g1field^agg
ST_LineFromMultiPoint ^3d (aMultiPoint) Creates a LineString from a MultiPoint geometry.
ST_MakeEnvelope (xmin, ymin, xmax, ymax, srid=unknown) Creates a rectangular Polygon from minimum and maximum coordinates.
ST_MakeLine ^3d Creates a LineString from Point, MultiPoint, or LineString geometries. geom1, geom2 geoms_array geoms^agg
ST_MakePoint ^3d Creates a 2D, 3DZ or 4D Point. x, y x, y, z x, y, z, m
ST_MakePointM (x, y, m) Creates a Point from X, Y and M values.
ST_MakePolygon ^3d Creates a Polygon from a shell and optional list of holes. linestring outerlinestring, interiorlinestrings
ST_Point ^mm Creates a Point with X, Y and SRID values. x, y x, y, srid=unknown
ST_PointZ (x, y, z, srid=unknown) Creates a Point with X, Y, Z and SRID values.
ST_PointM (x, y, m, srid=unknown) Creates a Point with X, Y, M and SRID values.
ST_PointZM (x, y, z, m, srid=unknown) Creates a Point with X, Y, Z, M and SRID values.
ST_Polygon ^mm ^3d (lineString, srid) Creates a Polygon from a LineString with a specified SRID.
ST_TileEnvelope (tileZoom, tileX, tileY, bounds=SRID=3857;LINESTRING(-20037508.342789 -20037508.342789,20037508.342789 20037508.342789), margin=0.0) Creates a rectangular Polygon in Web Mercator (SRID:3857) using the XYZ tile system.
ST_HexagonGrid (size, bounds) Returns a set of hexagons and cell indices that completely cover the bounds of the geometry argument.
ST_Hexagon (size, cell_i, cell_j, origin) Returns a single hexagon, using the provided edge size and cell coordinate within the hexagon grid space.
ST_SquareGrid (size, bounds) Returns a set of grid squares and cell indices that completely cover the bounds of the geometry argument.
ST_Square (size, cell_i, cell_j, origin) Returns a single square, using the provided edge size and cell coordinate within the square grid space.
ST_Letters ( letters, font) Returns the input letters rendered as geometry with a default start position at the origin and default text height of 100.

Geometry Accessors
GeometryType ^3d (geomA) Returns the type of a geometry as text.
ST_Boundary ^mm ^3d (geomA) Returns the boundary of a geometry.
ST_BoundingDiagonal ^3d (geom, fits=false) Returns the diagonal of a geometry's bounding box.
ST_CoordDim ^mm ^3d (geomA) Return the coordinate dimension of a geometry.
ST_Dimension ^mm (g) Returns the topological dimension of a geometry.
ST_Dump ^3d (g1) Returns a set of geometry_dump rows for the components of a geometry.
ST_DumpPoints ^3d (geom) Returns a set of geometry_dump rows for the coordinates in a geometry.
ST_DumpSegments ^3d (geom) Returns a set of geometry_dump rows for the segments in a geometry.
ST_DumpRings ^3d (a_polygon) Returns a set of geometry_dump rows for the exterior and interior rings of a Polygon.
ST_EndPoint ^mm ^3d (g) Returns the last point of a LineString or CircularLineString.
ST_Envelope ^mm (g1) Returns a geometry representing the bounding box of a geometry.
ST_ExteriorRing ^mm ^3d (a_polygon) Returns a LineString representing the exterior ring of a Polygon.
ST_GeometryN ^mm ^3d (geomA, n) Return an element of a geometry collection.
ST_GeometryType ^mm ^3d (g1) Returns the SQL-MM type of a geometry as text.
ST_HasArc ^3d (geomA) Tests if a geometry contains a circular arc
ST_InteriorRingN ^mm ^3d (a_polygon, n) Returns the Nth interior ring (hole) of a Polygon.
ST_NumCurves ^mm ^3d (a_compoundcurve) Return the number of component curves in a CompoundCurve.
ST_CurveN ^mm ^3d (a_compoundcurve, index) Returns the Nth component curve geometry of a CompoundCurve.
ST_IsClosed ^mm ^3d (g) Tests if a LineStrings's start and end points are coincident. For a PolyhedralSurface tests if it is closed (volumetric).
ST_IsCollection ^3d (g) Tests if a geometry is a geometry collection type.
ST_IsEmpty ^mm (geomA) Tests if a geometry is empty.
ST_IsPolygonCCW ^3d (geom) Tests if Polygons have exterior rings oriented counter-clockwise and interior rings oriented clockwise.
ST_IsPolygonCW ^3d (geom) Tests if Polygons have exterior rings oriented clockwise and interior rings oriented counter-clockwise.
ST_IsRing ^mm (g) Tests if a LineString is closed and simple.
ST_IsSimple ^mm ^3d (geomA) Tests if a geometry has no points of self-intersection or self-tangency.
ST_M ^mm ^3d (a_point) Returns the M coordinate of a Point.
ST_MemSize ^3d (geomA) Returns the amount of memory space a geometry takes.
ST_NDims ^3d (g1) Returns the coordinate dimension of a geometry.
ST_NPoints ^3d (g1) Returns the number of points (vertices) in a geometry.
ST_NRings ^3d (geomA) Returns the number of rings in a polygonal geometry.
ST_NumGeometries ^mm ^3d (geom) Returns the number of elements in a geometry collection.
ST_NumInteriorRings ^mm (a_polygon) Returns the number of interior rings (holes) of a Polygon.
ST_NumInteriorRing (a_polygon) Returns the number of interior rings (holes) of a Polygon. Aias for ST_NumInteriorRings
ST_NumPatches ^mm ^3d (g1) Return the number of faces on a Polyhedral Surface. Will return null for non-polyhedral geometries.
ST_NumPoints ^mm (g1) Returns the number of points in a LineString or CircularString.
ST_PatchN ^mm ^3d (geomA, n) Returns the Nth geometry (face) of a PolyhedralSurface.
ST_PointN ^mm ^3d (a_linestring, n) Returns the Nth point in the first LineString or circular LineString in a geometry.
ST_Points ^3d (geom) Returns a MultiPoint containing the coordinates of a geometry.
ST_StartPoint ^mm ^3d (geomA) Returns the first point of a LineString.
ST_Summary ^G Returns a text summary of the contents of a geometry. g g
ST_X ^mm ^3d (a_point) Returns the X coordinate of a Point.
ST_Y ^mm ^3d (a_point) Returns the Y coordinate of a Point.
ST_Z ^mm ^3d (a_point) Returns the Z coordinate of a Point.
ST_Zmflag ^3d (geomA) Returns a code indicating the ZM coordinate dimension of a geometry.
ST_HasZ ¹ ^3d (geom) Checks if a geometry has a Z dimension.
ST_HasM ¹ ^3d (geom) Checks if a geometry has an M (measure) dimension.

Geometry Editors
ST_AddPoint ^3d Add a point to a LineString. linestring, point linestring, point, position = -1
ST_CollectionExtract Given a geometry collection, returns a multi-geometry containing only elements of a specified type. collection collection, type
ST_CollectionHomogenize (collection) Returns the simplest representation of a geometry collection.
ST_CurveToLine ^mm ^3d (curveGeom, tolerance, tolerance_type, flags) Converts a geometry containing curves to a linear geometry.
ST_Scroll ^3d (linestring, point) Change start point of a closed LineString.
ST_FlipCoordinates ^3d (geom) Returns a version of a geometry with X and Y axis flipped.
ST_Force2D ^3d (geomA) Force the geometries into a "2-dimensional mode".
ST_Force3D ^3d (geomA, Zvalue = 0.0) Force the geometries into XYZ mode. This is an alias for ST_Force3DZ.
ST_Force3DZ ^3d (geomA, Zvalue = 0.0) Force the geometries into XYZ mode.
ST_Force3DM (geomA, Mvalue = 0.0) Force the geometries into XYM mode.
ST_Force4D ^3d (geomA, Zvalue = 0.0, Mvalue = 0.0) Force the geometries into XYZM mode.
ST_ForceCollection ^3d (geomA) Convert the geometry into a GEOMETRYCOLLECTION.
ST_ForceCurve ^3d (g) Upcast a geometry into its curved type, if applicable.
ST_ForcePolygonCCW ^3d (geom) Orients all exterior rings counter-clockwise and all interior rings clockwise.
ST_ForcePolygonCW ^3d (geom) Orients all exterior rings clockwise and all interior rings counter-clockwise.
ST_ForceSFS ^3d Force the geometries to use SFS 1.1 geometry types only. geomA geomA, version
ST_ForceRHR ^3d (g) Force the orientation of the vertices in a polygon to follow the Right-Hand-Rule.
ST_LineExtend (line, distance_forward, distance_backward=0.0) Returns a line extended forwards and backwards by specified distances.
ST_LineToCurve ^3d (geomANoncircular) Converts a linear geometry to a curved geometry.
ST_Multi (geom) Return the geometry as a MULTI* geometry.
ST_Normalize (geom) Return the geometry in its canonical form.
ST_Project ^G Returns a point projected from a start point by a distance and bearing (azimuth). g1, distance, azimuth g1, g2, distance g1, distance, azimuth g1, g2, distance
ST_QuantizeCoordinates (g, prec_x, prec_y, prec_z, prec_m) Sets least significant bits of coordinates to zero
ST_RemovePoint ^3d (linestring, offset) Remove a point from a linestring.
ST_RemoveRepeatedPoints ^3d (geom, tolerance) Returns a version of a geometry with duplicate points removed.
ST_RemoveIrrelevantPointsForView ¹ (geom, bounds) Removes points that are irrelevant for rendering a specific rectangluar view of a geometry.
ST_RemoveSmallParts ¹ (geom, minSizeX, minSizeY) Removes small parts (polygon rings or linestrings) of a geometry.
ST_Reverse ^3d (g1) Return the geometry with vertex order reversed.
ST_Segmentize ^G Returns a modified geometry/geography having no segment longer than a given distance. geom, max_segment_length geog, max_segment_length
ST_SetPoint ^3d (linestring, zerobasedposition, point) Replace point of a linestring with a given point.
ST_ShiftLongitude ^3d (geom) Shifts the longitude coordinates of a geometry between -180..180 and 0..360.
ST_WrapX ^3d (geom, wrap, move) Wrap a geometry around an X value.
ST_SnapToGrid ^3d Snap all points of the input geometry to a regular grid. geomA, originX, originY, sizeX, sizeY geomA, sizeX, sizeY geomA, size geomA, pointOrigin, sizeX, sizeY, sizeZ, sizeM
ST_Snap (input, reference, tolerance) Snap segments and vertices of input geometry to vertices of a reference geometry.
ST_SwapOrdinates ^3d (geom, ords) Returns a version of the given geometry with given ordinate values swapped.

Geometry Validation
ST_IsValid ^mm Tests if a geometry is well-formed in 2D. g g, flags
ST_IsValidDetail (geom, flags) Returns a valid_detail row stating if a geometry is valid or if not a reason and a location.
ST_IsValidReason Returns text stating if a geometry is valid, or a reason for invalidity. geomA geomA, flags
ST_MakeValid ^3d Attempts to make an invalid geometry valid without losing vertices. input input, params

Spatial Reference System Functions
ST_InverseTransformPipeline (geom, pipeline, to_srid) Return a new geometry with coordinates transformed to a different spatial reference system using the inverse of a defined coordinate transformation pipeline.
ST_SetSRID (geom, srid) Set the SRID on a geometry.
ST_SRID ^mm (g1) Returns the spatial reference identifier for a geometry.
ST_Transform ^mm Return a new geometry with coordinates transformed to a different spatial reference system. g1, srid geom, to_proj geom, from_proj, to_proj geom, from_proj, to_srid
ST_TransformPipeline (g1, pipeline, to_srid) Return a new geometry with coordinates transformed to a different spatial reference system using a defined coordinate transformation pipeline.
postgis_srs_codes (auth_name) Return the list of SRS codes associated with the given authority.
postgis_srs (auth_name, auth_srid) Return a metadata record for the requested authority and srid.
postgis_srs_all () Return metadata records for every spatial reference system in the underlying Proj database.
postgis_srs_search (bounds, auth_name=EPSG) Return metadata records for projected coordinate systems that have areas of useage that fully contain the bounds parameter.

Geometry Input
ST_BdPolyFromText (WKT, srid) Construct a Polygon given an arbitrary collection of closed linestrings as a MultiLineString Well-Known text representation.
ST_BdMPolyFromText (WKT, srid) Construct a MultiPolygon given an arbitrary collection of closed linestrings as a MultiLineString text representation Well-Known text representation.
ST_GeogFromText ^G (EWKT) Return a specified geography value from Well-Known Text representation or extended (WKT).
ST_GeographyFromText ^G (EWKT) Return a specified geography value from Well-Known Text representation or extended (WKT).
ST_GeomCollFromText ^mm Makes a collection Geometry from collection WKT with the given SRID. If SRID is not given, it defaults to 0. WKT, srid WKT
ST_GeomFromEWKT ^3d (EWKT) Return a specified ST_Geometry value from Extended Well-Known Text representation (EWKT).
ST_GeomFromMARC21 (marcxml) Takes MARC21/XML geographic data as input and returns a PostGIS geometry object.
ST_GeometryFromText ^mm Return a specified ST_Geometry value from Well-Known Text representation (WKT). This is an alias name for ST_GeomFromText WKT WKT, srid
ST_GeomFromText ^mm Return a specified ST_Geometry value from Well-Known Text representation (WKT). WKT WKT, srid
ST_LineFromText ^mm Makes a Geometry from WKT representation with the given SRID. If SRID is not given, it defaults to 0. WKT WKT, srid
ST_MLineFromText ^mm Return a specified ST_MultiLineString value from WKT representation. WKT, srid WKT
ST_MPointFromText ^mm Makes a Geometry from WKT with the given SRID. If SRID is not given, it defaults to 0. WKT, srid WKT
ST_MPolyFromText ^mm Makes a MultiPolygon Geometry from WKT with the given SRID. If SRID is not given, it defaults to 0. WKT, srid WKT
ST_PointFromText ^mm Makes a point Geometry from WKT with the given SRID. If SRID is not given, it defaults to unknown. WKT WKT, srid
ST_PolygonFromText ^mm Makes a Geometry from WKT with the given SRID. If SRID is not given, it defaults to 0. WKT WKT, srid
ST_WKTToSQL ^mm (WKT) Return a specified ST_Geometry value from Well-Known Text representation (WKT). This is an alias name for ST_GeomFromText
ST_GeogFromWKB ^G (wkb) Creates a geography instance from a Well-Known Binary geometry representation (WKB) or extended Well Known Binary (EWKB).
ST_GeomFromEWKB ^3d (EWKB) Return a specified ST_Geometry value from Extended Well-Known Binary representation (EWKB).
ST_GeomFromWKB ^mm Creates a geometry instance from a Well-Known Binary geometry representation (WKB) and optional SRID. geom geom, srid
ST_LineFromWKB ^mm Makes a LINESTRING from WKB with the given SRID WKB WKB, srid
ST_LinestringFromWKB ^mm Makes a geometry from WKB with the given SRID. WKB WKB, srid
ST_PointFromWKB ^mm ^3d Makes a geometry from WKB with the given SRID geom geom, srid
ST_WKBToSQL ^mm (WKB) Return a specified ST_Geometry value from Well-Known Binary representation (WKB). This is an alias name for ST_GeomFromWKB that takes no srid
ST_Box2dFromGeoHash (geohash, precision=full_precision_of_geohash) Return a BOX2D from a GeoHash string.
ST_GeomFromGeoHash (geohash, precision=full_precision_of_geohash) Return a geometry from a GeoHash string.
ST_GeomFromGML ^3d Takes as input GML representation of geometry and outputs a PostGIS geometry object geomgml geomgml, srid
ST_GeomFromGeoJSON ^3d Takes as input a geojson representation of a geometry and outputs a PostGIS geometry object geomjson geomjson geomjson
ST_GeomFromKML ^3d (geomkml) Takes as input KML representation of geometry and outputs a PostGIS geometry object
ST_GeomFromTWKB (twkb) Creates a geometry instance from a TWKB ("Tiny Well-Known Binary") geometry representation.
ST_GMLToSQL ^mm Return a specified ST_Geometry value from GML representation. This is an alias name for ST_GeomFromGML geomgml geomgml, srid
ST_LineFromEncodedPolyline (polyline, precision=5) Creates a LineString from an Encoded Polyline.
ST_PointFromGeoHash (geohash, precision=full_precision_of_geohash) Return a point from a GeoHash string.
ST_FromFlatGeobufToTable (schemaname, tablename, FlatGeobuf input data) Creates a table based on the structure of FlatGeobuf data.
ST_FromFlatGeobuf (Table reference, FlatGeobuf input data) Reads FlatGeobuf data.

Geometry Output
ST_AsEWKT ^G ^3d Return the Well-Known Text (WKT) representation of the geometry with SRID meta data. g1 g1, maxdecimaldigits=15 g1 g1, maxdecimaldigits=15
ST_AsText ^mm ^G Return the Well-Known Text (WKT) representation of the geometry/geography without SRID metadata. g1 g1, maxdecimaldigits = 15 g1 g1, maxdecimaldigits = 15
ST_AsBinary ^mm ^G ^3d Return the OGC/ISO Well-Known Binary (WKB) representation of the geometry/geography without SRID meta data. g1 g1, NDR_or_XDR g1 g1, NDR_or_XDR
ST_AsEWKB ^3d Return the Extended Well-Known Binary (EWKB) representation of the geometry with SRID meta data. g1 g1, NDR_or_XDR
ST_AsHEXEWKB ^3d Returns a Geometry in HEXEWKB format (as text) using either little-endian (NDR) or big-endian (XDR) encoding. g1, NDRorXDR g1
ST_AsEncodedPolyline (geom, precision=5) Returns an Encoded Polyline from a LineString geometry.
ST_AsFlatGeobuf Return a FlatGeobuf representation of a set of rows. row^agg row, index row, index, geom_name
ST_AsGeobuf Return a Geobuf representation of a set of rows. row^agg row, geom_name
ST_AsGeoJSON ^G ^3d Return a geometry or feature in GeoJSON format. feature, geom_column="", maxdecimaldigits=9, pretty_bool=false, id_column='' geom, maxdecimaldigits=9, options=8 geog, maxdecimaldigits=9, options=0
ST_AsGML ^mm ^G ^3d Return the geometry as a GML version 2 or 3 element. geom, maxdecimaldigits=15, options=0 geog, maxdecimaldigits=15, options=0, nprefix=null, id=null version, geom, maxdecimaldigits=15, options=0, nprefix=null, id=null version, geog, maxdecimaldigits=15, options=0, nprefix=null, id=null
ST_AsKML ^G ^3d Return the geometry as a KML element. geom, maxdecimaldigits=15, nprefix=NULL geog, maxdecimaldigits=15, nprefix=NULL
ST_AsLatLonText (pt, format='') Return the Degrees, Minutes, Seconds representation of the given point.
ST_AsMARC21 (geom, format='hdddmmss') Returns geometry as a MARC21/XML record with a geographic datafield (034).
ST_AsMVTGeom (geom, bounds, extent=4096, buffer=256, clip_geom=true) Transforms a geometry into the coordinate space of a MVT tile.
ST_AsMVT Aggregate function returning a MVT representation of a set of rows. row^agg row, name row, name, extent row, name, extent, geom_name row, name, extent, geom_name, feature_id_name
ST_AsSVG ^G Returns SVG path data for a geometry. geom, rel=0, maxdecimaldigits=15 geog, rel=0, maxdecimaldigits=15
ST_AsTWKB Returns the geometry as TWKB, aka "Tiny Well-Known Binary" geom, prec=0, prec_z=0, prec_m=0, with_sizes=false, with_boxes=false geom, ids, prec=0, prec_z=0, prec_m=0, with_sizes=false, with_boxes=false
ST_AsX3D ^3d (g1, maxdecimaldigits=15, options=0) Returns a Geometry in X3D xml node element format: ISO-IEC-19776-1.2-X3DEncodings-XML
ST_GeoHash (geom, maxchars=full_precision_of_point) Return a GeoHash representation of the geometry.

Operators
&& ^G Returns TRUE if A's 2D bounding box intersects B's 2D bounding box. A, B A, B
&&(geometry,box2df) (A, B) Returns TRUE if a geometry's (cached) 2D bounding box intersects a 2D float precision bounding box (BOX2DF).
&&(box2df,geometry) (A, B) Returns TRUE if a 2D float precision bounding box (BOX2DF) intersects a geometry's (cached) 2D bounding box.
&&(box2df,box2df) (A, B) Returns TRUE if two 2D float precision bounding boxes (BOX2DF) intersect each other.
&&& ^3d (A, B) Returns TRUE if A's n-D bounding box intersects B's n-D bounding box.
&&&(geometry,gidx) ^3d (A, B) Returns TRUE if a geometry's (cached) n-D bounding box intersects a n-D float precision bounding box (GIDX).
&&&(gidx,geometry) ^3d (A, B) Returns TRUE if a n-D float precision bounding box (GIDX) intersects a geometry's (cached) n-D bounding box.
&&&(gidx,gidx) ^3d (A, B) Returns TRUE if two n-D float precision bounding boxes (GIDX) intersect each other.
&< (A, B) Returns TRUE if A's bounding box overlaps or is to the left of B's.
&<\| (A, B) Returns TRUE if A's bounding box overlaps or is below B's.
&> (A, B) Returns TRUE if A' bounding box overlaps or is to the right of B's.
<< (A, B) Returns TRUE if A's bounding box is strictly to the left of B's.
<<\| (A, B) Returns TRUE if A's bounding box is strictly below B's.
= ^G Returns TRUE if the coordinates and coordinate order geometry/geography A are the same as the coordinates and coordinate order of geometry/geography B. A, B A, B
>> (A, B) Returns TRUE if A's bounding box is strictly to the right of B's.
@ (A, B) Returns TRUE if A's bounding box is contained by B's.
@(geometry,box2df) (A, B) Returns TRUE if a geometry's 2D bounding box is contained into a 2D float precision bounding box (BOX2DF).
@(box2df,geometry) (A, B) Returns TRUE if a 2D float precision bounding box (BOX2DF) is contained into a geometry's 2D bounding box.
@(box2df,box2df) (A, B) Returns TRUE if a 2D float precision bounding box (BOX2DF) is contained into another 2D float precision bounding box.
\|&> (A, B) Returns TRUE if A's bounding box overlaps or is above B's.
\|>> (A, B) Returns TRUE if A's bounding box is strictly above B's.
~ (A, B) Returns TRUE if A's bounding box contains B's.
~(geometry,box2df) (A, B) Returns TRUE if a geometry's 2D bonding box contains a 2D float precision bounding box (GIDX).
~(box2df,geometry) (A, B) Returns TRUE if a 2D float precision bounding box (BOX2DF) contains a geometry's 2D bonding box.
~(box2df,box2df) (A, B) Returns TRUE if a 2D float precision bounding box (BOX2DF) contains another 2D float precision bounding box (BOX2DF).
~= (A, B) Returns TRUE if A's bounding box is the same as B's.
<-> ^G Returns the 2D distance between A and B. A, B A, B
\|=\| (A, B) Returns the distance between A and B trajectories at their closest point of approach.
<#> (A, B) Returns the 2D distance between A and B bounding boxes.
<<->> (A, B) Returns the n-D distance between the A and B geometries or bounding boxes

Spatial Relationships
ST_3DIntersects ^mm ^3d (geomA, geomB) Tests if two geometries spatially intersect in 3D - only for points, linestrings, polygons, polyhedral surface (area)
ST_Contains ^mm (geomA, geomB) Tests if every point of B lies in A, and their interiors have a point in common
ST_ContainsProperly (geomA, geomB) Tests if every point of B lies in the interior of A
ST_CoveredBy ^G Tests if every point of A lies in B geomA, geomB geogA, geogB
ST_Covers ^G Tests if every point of B lies in A geomA, geomB geogpolyA, geogpointB
ST_Crosses ^mm (g1, g2) Tests if two geometries have some, but not all, interior points in common
ST_Disjoint ^mm (A, B) Tests if two geometries have no points in common
ST_Equals ^mm (A, B) Tests if two geometries include the same set of points
ST_Intersects ^mm ^G Tests if two geometries intersect (they have at least one point in common) geomA, geomB geogA, geogB
ST_LineCrossingDirection (linestringA, linestringB) Returns a number indicating the crossing behavior of two LineStrings
ST_OrderingEquals ^mm (A, B) Tests if two geometries represent the same geometry and have points in the same directional order
ST_Overlaps ^mm (A, B) Tests if two geometries have the same dimension and intersect, but each has at least one point not in the other
ST_Relate ^mm Tests if two geometries have a topological relationship matching an Intersection Matrix pattern, or computes their Intersection Matrix geomA, geomB, intersectionMatrixPattern geomA, geomB geomA, geomB, boundaryNodeRule
ST_RelateMatch (intersectionMatrix, intersectionMatrixPattern) Tests if a DE-9IM Intersection Matrix matches an Intersection Matrix pattern
ST_Touches ^mm (A, B) Tests if two geometries have at least one point in common, but their interiors do not intersect
ST_Within ^mm (A, B) Tests if every point of A lies in B, and their interiors have a point in common
ST_3DDWithin ^mm ^3d (g1, g2, distance_of_srid) Tests if two 3D geometries are within a given 3D distance
ST_3DDFullyWithin ^3d (g1, g2, distance) Tests if two 3D geometries are entirely within a given 3D distance
ST_DFullyWithin (g1, g2, distance) Tests if a geometry is entirely inside a distance of another
ST_DWithin ^G Tests if two geometries are within a given distance g1, g2, distance_of_srid gg1, gg2, distance_meters, use_spheroid = true
ST_PointInsideCircle (a_point, center_x, center_y, radius) Tests if a point geometry is inside a circle defined by a center and radius

Measurement Functions
ST_Area ^mm ^G Returns the area of a polygonal geometry. g1 geog, use_spheroid = true
ST_Azimuth ^G Returns the north-based azimuth of a line between two points. origin, target origin, target
ST_Angle Returns the angle between two vectors defined by 3 or 4 points, or 2 lines. point1, point2, point3, point4 line1, line2
ST_ClosestPoint ^G Returns the 2D point on g1 that is closest to g2. This is the first point of the shortest line from one geometry to the other. geom1, geom2 geom1, geom2, use_spheroid = true
ST_3DClosestPoint ^3d (g1, g2) Returns the 3D point on g1 that is closest to g2. This is the first point of the 3D shortest line.
ST_Distance ^mm ^G Returns the distance between two geometry or geography values. g1, g2 geog1, geog2, use_spheroid = true
ST_3DDistance ^mm ^3d (g1, g2) Returns the 3D cartesian minimum distance (based on spatial ref) between two geometries in projected units.
ST_DistanceSphere (geomlonlatA, geomlonlatB, radius=6371008) Returns minimum distance in meters between two lon/lat geometries using a spherical earth model.
ST_DistanceSpheroid (geomlonlatA, geomlonlatB, measurement_spheroid=WGS84) Returns the minimum distance between two lon/lat geometries using a spheroidal earth model.
ST_FrechetDistance (g1, g2, densifyFrac = -1) Returns the Fréchet distance between two geometries.
ST_HausdorffDistance Returns the Hausdorff distance between two geometries. g1, g2 g1, g2, densifyFrac
ST_Length ^mm ^G Returns the 2D length of a linear geometry. a_2dlinestring geog, use_spheroid = true
ST_Length2D (a_2dlinestring) Returns the 2D length of a linear geometry. Alias for ST_Length
ST_3DLength ^mm ^3d (a_3dlinestring) Returns the 3D length of a linear geometry.
ST_LengthSpheroid ^3d (a_geometry, a_spheroid) Returns the 2D or 3D length/perimeter of a lon/lat geometry on a spheroid.
ST_LongestLine (g1, g2) Returns the 2D longest line between two geometries.
ST_3DLongestLine ^3d (g1, g2) Returns the 3D longest line between two geometries
ST_MaxDistance (g1, g2) Returns the 2D largest distance between two geometries in projected units.
ST_3DMaxDistance ^3d (g1, g2) Returns the 3D cartesian maximum distance (based on spatial ref) between two geometries in projected units.
ST_MinimumClearance (g) Returns the minimum clearance of a geometry, a measure of a geometry's robustness.
ST_MinimumClearanceLine (g) Returns the two-point LineString spanning a geometry's minimum clearance.
ST_Perimeter ^mm ^G Returns the length of the boundary of a polygonal geometry or geography. g1 geog, use_spheroid = true
ST_Perimeter2D (geomA) Returns the 2D perimeter of a polygonal geometry. Alias for ST_Perimeter.
ST_3DPerimeter ^mm ^3d (geomA) Returns the 3D perimeter of a polygonal geometry.
ST_ShortestLine ^G Returns the 2D shortest line between two geometries geom1, geom2 geom1, geom2, use_spheroid = true
ST_3DShortestLine ^3d (g1, g2) Returns the 3D shortest line between two geometries

Overlay Functions
ST_ClipByBox2D (geom, box) Computes the portion of a geometry falling within a rectangle.
ST_Difference ^mm ^g3.9 ^3d (geomA, geomB, gridSize = -1) Computes a geometry representing the part of geometry A that does not intersect geometry B.
ST_Intersection ^mm ^G ^g3.9 ^3d Computes a geometry representing the shared portion of geometries A and B. geomA, geomB, gridSize = -1 geogA, geogB
ST_MemUnion ^3d (geomfield) Aggregate function which unions geometries in a memory-efficent but slower way
ST_Node ^3d (geom) Nodes a collection of lines.
ST_Split (input, blade) Returns a collection of geometries created by splitting a geometry by another geometry.
ST_Subdivide ^g3.9 (geom, max_vertices=256, gridSize = -1) Computes a rectilinear subdivision of a geometry.
ST_SymDifference ^mm ^g3.9 ^3d (geomA, geomB, gridSize = -1) Computes a geometry representing the portions of geometries A and B that do not intersect.
ST_UnaryUnion ^g3.9 ^3d (geom, gridSize = -1) Computes the union of the components of a single geometry.
ST_Union ^mm ^g3.9 ^3d Computes a geometry representing the point-set union of the input geometries. g1, g2 g1, g2, gridSize g1_array g1field^agg g1field, gridSize^agg

Geometry Processing
ST_Buffer ^mm ^G Computes a geometry covering all points within a given distance from a geometry. g1, radius_of_buffer, buffer_style_parameters = '' g1, radius_of_buffer, num_seg_quarter_circle g1, radius_of_buffer, buffer_style_parameters g1, radius_of_buffer, num_seg_quarter_circle
ST_BuildArea (geom) Creates a polygonal geometry formed by the linework of a geometry.
ST_Centroid ^mm ^G Returns the geometric center of a geometry. g1 g1, use_spheroid = true
ST_ChaikinSmoothing ^3d (geom, nIterations = 1, preserveEndPoints = false) Returns a smoothed version of a geometry, using the Chaikin algorithm
ST_ConcaveHull (param_geom, param_pctconvex, param_allow_holes = false) Computes a possibly concave geometry that contains all input geometry vertices
ST_ConvexHull ^mm ^3d (geomA) Computes the convex hull of a geometry.
ST_DelaunayTriangles ^3d (g1, tolerance = 0.0, flags = 0) Returns the Delaunay triangulation of the vertices of a geometry.
ST_FilterByM (geom, min, max = null, returnM = false) Removes vertices based on their M value
ST_GeneratePoints (g, npoints, seed = 0) Generates a multipoint of random points contained in a Polygon or MultiPolygon.
ST_GeometricMedian ^3d (geom, tolerance = NULL, max_iter = 10000, fail_if_not_converged = false) Returns the geometric median of a MultiPoint.
ST_LineMerge ^g3.11 Return the lines formed by sewing together a MultiLineString. amultilinestring amultilinestring, directed
ST_MaximumInscribedCircle ^g3.9 (geom) Computes the largest circle contained within a geometry.
ST_LargestEmptyCircle ^g3.9 (geom, tolerance=0.0, boundary=POINT EMPTY) Computes the largest circle not overlapping a geometry.
ST_MinimumBoundingCircle (geomA, num_segs_per_qt_circ=48) Returns the smallest circle polygon that contains a geometry.
ST_MinimumBoundingRadius (geom) Returns the center point and radius of the smallest circle that contains a geometry.
ST_OrientedEnvelope (geom) Returns a minimum-area rectangle containing a geometry.
ST_OffsetCurve (line, signed_distance, style_parameters='') Returns an offset line at a given distance and side from an input line.
ST_PointOnSurface ^mm ^3d (g1) Computes a point guaranteed to lie in a polygon, or on a geometry.
ST_Polygonize Computes a collection of polygons formed from the linework of a set of geometries. geomfield^agg geom_array
ST_ReducePrecision ^g3.9 (g, gridsize) Returns a valid geometry with points rounded to a grid tolerance.
ST_SharedPaths (lineal1, lineal2) Returns a collection containing paths shared by the two input linestrings/multilinestrings.
ST_Simplify Returns a simplified representation of a geometry, using the Douglas-Peucker algorithm. geom, tolerance geom, tolerance, preserveCollapsed
ST_SimplifyPreserveTopology (geom, tolerance) Returns a simplified and valid representation of a geometry, using the Douglas-Peucker algorithm.
ST_SimplifyPolygonHull ^g3.11 (param_geom, vertex_fraction, is_outer = true) Computes a simplifed topology-preserving outer or inner hull of a polygonal geometry.
ST_SimplifyVW (geom, tolerance) Returns a simplified representation of a geometry, using the Visvalingam-Whyatt algorithm
ST_SetEffectiveArea (geom, threshold = 0, set_area = 1) Sets the effective area for each vertex, using the Visvalingam-Whyatt algorithm.
ST_TriangulatePolygon ^g3.11 (geom) Computes the constrained Delaunay triangulation of polygons
ST_VoronoiLines (geom, tolerance = 0.0, extend_to = NULL) Returns the boundaries of the Voronoi diagram of the vertices of a geometry.
ST_VoronoiPolygons (geom, tolerance = 0.0, extend_to = NULL) Returns the cells of the Voronoi diagram of the vertices of a geometry.

Coverages
ST_CoverageInvalidEdges ^g3.12 (geom, tolerance = 0) Window function that finds locations where polygons fail to form a valid coverage.
ST_CoverageSimplify ^g3.12 (geom, tolerance, simplifyBoundary = true) Window function that simplifies the edges of a polygonal coverage.
ST_CoverageUnion (geom) Computes the union of a set of polygons forming a coverage by removing shared edges.

Affine Transformations
ST_Affine ^3d Apply a 3D affine transformation to a geometry. geomA, a, b, c, d, e, f, g, h, i, xoff, yoff, zoff geomA, a, b, d, e, xoff, yoff
ST_Rotate ^3d Rotates a geometry about an origin point. geomA, rotRadians geomA, rotRadians, x0, y0 geomA, rotRadians, pointOrigin
ST_RotateX ^3d (geomA, rotRadians) Rotates a geometry about the X axis.
ST_RotateY ^3d (geomA, rotRadians) Rotates a geometry about the Y axis.
ST_RotateZ ^3d (geomA, rotRadians) Rotates a geometry about the Z axis.
ST_Scale ^3d Scales a geometry by given factors. geomA, XFactor, YFactor, ZFactor geomA, XFactor, YFactor geom, factor geom, factor, origin
ST_Translate ^3d Translates a geometry by given offsets. g1, deltax, deltay g1, deltax, deltay, deltaz
ST_TransScale ^3d (geomA, deltaX, deltaY, XFactor, YFactor) Translates and scales a geometry by given offsets and factors.

Clustering Functions
ST_ClusterDBSCAN (geom, eps, minpoints) Window function that returns a cluster id for each input geometry using the DBSCAN algorithm.
ST_ClusterIntersecting (g) Aggregate function that clusters input geometries into connected sets.
ST_ClusterIntersectingWin (geom) Window function that returns a cluster id for each input geometry, clustering input geometries into connected sets.
ST_ClusterKMeans (geom, number_of_clusters, max_radius) Window function that returns a cluster id for each input geometry using the K-means algorithm.
ST_ClusterWithin (g, distance) Aggregate function that clusters geometries by separation distance.
ST_ClusterWithinWin (geom, distance) Window function that returns a cluster id for each input geometry, clustering using separation distance.

Bounding Box Functions
Box2D (geom) Returns a BOX2D representing the 2D extent of a geometry.
Box3D ^3d (geom) Returns a BOX3D representing the 3D extent of a geometry.
ST_EstimatedExtent Returns the estimated extent of a spatial table. schema_name, table_name, geocolumn_name, parent_only schema_name, table_name, geocolumn_name table_name, geocolumn_name
ST_Expand Returns a bounding box expanded from another bounding box or a geometry. geom, units_to_expand geom, dx, dy, dz=0, dm=0 box, units_to_expand box, dx, dy box, units_to_expand box, dx, dy, dz=0
ST_Extent (geomfield) Aggregate function that returns the bounding box of geometries.
ST_3DExtent ^3d (geomfield) Aggregate function that returns the 3D bounding box of geometries.
ST_MakeBox2D (pointLowLeft, pointUpRight) Creates a BOX2D defined by two 2D point geometries.
ST_3DMakeBox (point3DLowLeftBottom, point3DUpRightTop) Creates a BOX3D defined by two 3D point geometries.
ST_XMax ^3d (aGeomorBox2DorBox3D) Returns the X maxima of a 2D or 3D bounding box or a geometry.
ST_XMin ^3d (aGeomorBox2DorBox3D) Returns the X minima of a 2D or 3D bounding box or a geometry.
ST_YMax ^3d (aGeomorBox2DorBox3D) Returns the Y maxima of a 2D or 3D bounding box or a geometry.
ST_YMin ^3d (aGeomorBox2DorBox3D) Returns the Y minima of a 2D or 3D bounding box or a geometry.
ST_ZMax ^3d (aGeomorBox2DorBox3D) Returns the Z maxima of a 2D or 3D bounding box or a geometry.
ST_ZMin ^3d (aGeomorBox2DorBox3D) Returns the Z minima of a 2D or 3D bounding box or a geometry.

Linear Referencing
ST_LineInterpolatePoint ^G ^3d Returns a point interpolated along a line at a fractional location. a_linestring, a_fraction a_linestring, a_fraction, use_spheroid = true
ST_3DLineInterpolatePoint ^3d (a_linestring, a_fraction) Returns a point interpolated along a 3D line at a fractional location.
ST_LineInterpolatePoints ^G ^3d Returns points interpolated along a line at a fractional interval. a_linestring, a_fraction, repeat a_linestring, a_fraction, use_spheroid = true, repeat = true
ST_LineLocatePoint ^G Returns the fractional location of the closest point on a line to a point. a_linestring, a_point a_linestring, a_point, use_spheroid = true
ST_LineSubstring ^G ^3d Returns the part of a line between two fractional locations. a_linestring, startfraction, endfraction a_linestring, startfraction, endfraction
ST_LocateAlong ^mm (geom_with_measure, measure, offset = 0) Returns the point(s) on a geometry that match a measure value.
ST_LocateBetween ^mm (geom, measure_start, measure_end, offset = 0) Returns the portions of a geometry that match a measure range.
ST_LocateBetweenElevations ^3d (geom, elevation_start, elevation_end) Returns the portions of a geometry that lie in an elevation (Z) range.
ST_InterpolatePoint ^3d (linear_geom_with_measure, point) Returns the interpolated measure of a geometry closest to a point.
ST_AddMeasure ^3d (geom_mline, measure_start, measure_end) Interpolates measures along a linear geometry.

Trajectory Functions
ST_IsValidTrajectory ^3d (line) Tests if the geometry is a valid trajectory.
ST_ClosestPointOfApproach ^3d (track1, track2) Returns a measure at the closest point of approach of two trajectories.
ST_DistanceCPA ^3d (track1, track2) Returns the distance between the closest point of approach of two trajectories.
ST_CPAWithin ^3d (track1, track2, dist) Tests if the closest point of approach of two trajectories is within the specified distance.

Version Functions
PostGIS_Extensions_Upgrade (target_version=null) Packages and upgrades PostGIS extensions (e.g. postgis_raster, postgis_topology, postgis_sfcgal) to given or latest version.
PostGIS_Full_Version () Reports full PostGIS version and build configuration infos.
PostGIS_GEOS_Version () Returns the version number of the GEOS library.
PostGIS_GEOS_Compiled_Version () Returns the version number of the GEOS library against which PostGIS was built.
PostGIS_Liblwgeom_Version () Returns the version number of the liblwgeom library. This should match the version of PostGIS.
PostGIS_LibXML_Version () Returns the version number of the libxml2 library.
PostGIS_Lib_Build_Date () Returns build date of the PostGIS library.
PostGIS_Lib_Version () Returns the version number of the PostGIS library.
PostGIS_PROJ_Version () Returns the version number of the PROJ4 library.
PostGIS_PROJ_Compiled_Version () Returns the version number of the PROJ library against which PostGIS was built.
PostGIS_Wagyu_Version () Returns the version number of the internal Wagyu library.
PostGIS_Scripts_Build_Date () Returns build date of the PostGIS scripts.
PostGIS_Scripts_Installed () Returns version of the PostGIS scripts installed in this database.
PostGIS_Scripts_Released () Returns the version number of the postgis.sql script released with the installed PostGIS lib.
PostGIS_Version () Returns PostGIS version number and compile-time options.

Grand Unified Custom Variables (GUCs)
postgis.backend The backend to service a function where GEOS and SFCGAL overlap. Options: geos or sfcgal. Defaults to geos.
postgis.gdal_datapath A configuration option to assign the value of GDAL's GDAL_DATA option. If not set, the environmentally set GDAL_DATA variable is used.
postgis.gdal_enabled_drivers A configuration option to set the enabled GDAL drivers in the PostGIS environment. Affects the GDAL configuration variable GDAL_SKIP.
postgis.enable_outdb_rasters A boolean configuration option to enable access to out-db raster bands.
postgis.gdal_vsi_options A string configuration to set options used when working with an out-db raster.

Troubleshooting Functions
PostGIS_AddBBox (geomA) Add bounding box to the geometry.
PostGIS_DropBBox (geomA) Drop the bounding box cache from the geometry.
PostGIS_HasBBox (geomA) Returns TRUE if the bbox of this geometry is cached, FALSE otherwise.

PostGIS 3.5 Cheatsheet