forked from docs/doc-exports
Lu, Huayi
e6fa411af0
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
147 lines
18 KiB
HTML
147 lines
18 KiB
HTML
<a name="EN-US_TOPIC_0000001233883215"></a><a name="EN-US_TOPIC_0000001233883215"></a>
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<h1 class="topictitle1">PostGIS Support and Constraints</h1>
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<div id="body1531707297510"><div class="section" id="EN-US_TOPIC_0000001233883215__section59521232327"><h4 class="sectiontitle">Supported Data Types</h4><p id="EN-US_TOPIC_0000001233883215__p38539218315">In <span id="EN-US_TOPIC_0000001233883215__text224625133">GaussDB(DWS)</span>, PostGIS Extension support the following data types:</p>
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<ul id="EN-US_TOPIC_0000001233883215__ul1742517109523"><li id="EN-US_TOPIC_0000001233883215__li154256100522">box2d</li><li id="EN-US_TOPIC_0000001233883215__li5311420115211">box3d</li><li id="EN-US_TOPIC_0000001233883215__li1151416510220">geometry_dump</li><li id="EN-US_TOPIC_0000001233883215__li163701925205210">geometry</li><li id="EN-US_TOPIC_0000001233883215__li523173019522">geography</li><li id="EN-US_TOPIC_0000001233883215__li18920943202516">raster</li></ul>
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<div class="note" id="EN-US_TOPIC_0000001233883215__note1490882615165"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><div class="p" id="EN-US_TOPIC_0000001233883215__p69761848102516">If PostGIS is used by a user other than the creator of the PostGIS, set the following GUC parameters:<pre class="screen" id="EN-US_TOPIC_0000001233883215__screen82182565257">SET behavior_compat_options = 'bind_procedure_searchpath';</pre>
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</div>
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</div></div>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001233883215__section1198813519310"><h4 class="sectiontitle">Supported Operators and Functions</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001233883215__table18970162111535" frame="border" border="1" rules="all"><caption><b>Table 1 </b><strong id="EN-US_TOPIC_0000001233883215__b156451757133511">Operators and functions supported by PostGIS</strong></caption><thead align="left"><tr id="EN-US_TOPIC_0000001233883215__row99711021145319"><th align="left" class="cellrowborder" valign="top" width="24%" id="mcps1.3.2.2.2.3.1.1"><p id="EN-US_TOPIC_0000001233883215__p149718214536">Category</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="76%" id="mcps1.3.2.2.2.3.1.2"><p id="EN-US_TOPIC_0000001233883215__p1897112175318">Function</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="EN-US_TOPIC_0000001233883215__row14971152165319"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p203181644115312">Management functions</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p497162116533">AddGeometryColumn, DropGeometryColumn, DropGeometryTable, PostGIS_Full_Version, PostGIS_GEOS_Version, PostGIS_Liblwgeom_Version, PostGIS_Lib_Build_Date, PostGIS_Lib_Version, PostGIS_PROJ_Version, PostGIS_Scripts_Build_Date, PostGIS_Scripts_Installed, PostGIS_Version, PostGIS_LibXML_Version, PostGIS_Scripts_Released, Populate_Geometry_Columns, UpdateGeometrySRID</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row1797192135316"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1055125895312">Geometry constructors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p7971321155318">ST_BdPolyFromText, ST_BdMPolyFromText, ST_Box2dFromGeoHash, ST_GeogFromText, ST_GeographyFromText, ST_GeogFromWKB, ST_GeomCollFromText, ST_GeomFromEWKB, ST_GeomFromEWKT, ST_GeometryFromText, ST_GeomFromGeoHash, ST_GeomFromGML, ST_GeomFromGeoJSON, ST_GeomFromKML, ST_GMLToSQL, ST_GeomFromText, ST_GeomFromWKB, ST_LineFromMultiPoint, ST_LineFromText, ST_LineFromWKB, ST_LinestringFromWKB, ST_MakeBox2D, ST_3DMakeBox, ST_MakeEnvelope, ST_MakePolygon, ST_MakePoint, ST_MakePointM, ST_MLineFromText, ST_MPointFromText, ST_MPolyFromText, ST_Point, ST_PointFromGeoHash, ST_PointFromText, ST_PointFromWKB, ST_Polygon, ST_PolygonFromText, ST_WKBToSQL, ST_WKTToSQL</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row297113213531"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p749821415413">Geometry accessors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p697142115532">GeometryType, ST_Boundary, ST_CoordDim, ST_Dimension, ST_EndPoint, ST_Envelope, ST_ExteriorRing, ST_GeometryN, ST_GeometryType, ST_InteriorRingN, ST_IsClosed, ST_IsCollection, ST_IsEmpty, ST_IsRing, ST_IsSimple, ST_IsValid, ST_IsValidReason, ST_IsValidDetail, ST_M, ST_NDims, ST_NPoints, ST_NRings, ST_NumGeometries, ST_NumInteriorRings, ST_NumInteriorRing, ST_NumPatches, ST_NumPoints, ST_PatchN, ST_PointN, ST_SRID, ST_StartPoint, ST_Summary, ST_X, ST_XMax, ST_XMin, ST_Y, ST_YMax, ST_YMin, ST_Z, ST_ZMax, ST_Zmflag, ST_ZMin</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row1997102165319"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p796118260543">Geometry editors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p1097115214532">ST_AddPoint, ST_Affine, ST_Force2D, ST_Force3D, ST_Force3DZ, ST_Force3DM, ST_Force4D, ST_ForceCollection, ST_ForceSFS, ST_ForceRHR, ST_LineMerge, ST_CollectionExtract, ST_CollectionHomogenize, ST_Multi, ST_RemovePoint, ST_Reverse, ST_Rotate, ST_RotateX, ST_RotateY, ST_RotateZ, ST_Scale, ST_Segmentize, ST_SetPoint, ST_SetSRID, ST_SnapToGrid, ST_Snap, ST_Transform, ST_Translate, ST_TransScale</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row1297132115534"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p3121194017543">Geometry outputs</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p197132120536">ST_AsBinary, ST_AsEWKB, ST_AsEWKT, ST_AsGeoJSON, ST_AsGML, ST_AsHEXEWKB, ST_AsKML, ST_AsLatLonText, ST_AsSVG, ST_AsText, ST_AsX3D, ST_GeoHash</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row19971182117536"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p41350135414">Operators</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p1297142155317">&&, &&&, &<, &<|, &>, <<, <<|, =, >>, @, |&>, |>>, ~, ~=, <->, <#></p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row12971182115314"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p149711221175319">Spatial relationships and measurements</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p6971421155314">ST_3DClosestPoint, ST_3DDistance, ST_3DDWithin, ST_3DDFullyWithin, ST_3DIntersects, ST_3DLongestLine, ST_3DMaxDistance, ST_3DShortestLine, ST_Area, ST_Azimuth, ST_Centroid, ST_ClosestPoint, ST_Contains, ST_ContainsProperly, ST_Covers, ST_CoveredBy, ST_Crosses, ST_LineCrossingDirection, ST_Disjoint, ST_Distance, ST_HausdorffDistance, ST_MaxDistance, ST_DistanceSphere, ST_DistanceSpheroid, ST_DFullyWithin, ST_DWithin, ST_Equals, ST_HasArc, ST_Intersects, ST_Length, ST_Length2D, ST_3DLength, ST_Length_Spheroid, ST_Length2D_Spheroid, ST_3DLength_Spheroid, ST_LongestLine, ST_OrderingEquals, ST_Overlaps, ST_Perimeter, ST_Perimeter2D, ST_3DPerimeter, ST_PointOnSurface, ST_Project, ST_Relate, ST_RelateMatch, ST_ShortestLine, ST_Touches, ST_Within</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row2971112115316"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p620562615557">Geometry processing</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p15971421115310">ST_Buffer, ST_BuildArea, ST_Collect, ST_ConcaveHull, ST_ConvexHull, ST_CurveToLine, ST_DelaunayTriangles, ST_Difference, ST_Dump, ST_DumpPoints, ST_DumpRings, ST_FlipCoordinates, ST_Intersection, ST_LineToCurve, ST_MakeValid, ST_MemUnion, ST_MinimumBoundingCircle, ST_Polygonize, ST_Node, ST_OffsetCurve, ST_RemoveRepeatedPoints, ST_SharedPaths, ST_Shift_Longitude, ST_Simplify, ST_SimplifyPreserveTopology, ST_Split, ST_SymDifference, ST_Union, ST_UnaryUnion</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row697122195317"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1511184455511">Linear referencing</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p9971921165313">ST_LineInterpolatePoint, ST_LineLocatePoint, ST_LineSubstring, ST_LocateAlong, ST_LocateBetween, ST_LocateBetweenElevations, ST_InterpolatePoint, ST_AddMeasure</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row2971172165312"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1397118218530">Miscellaneous functions</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p1697182135318">ST_Accum, Box2D, Box3D, ST_Expand, ST_Extent, ST_3Dextent, Find_SRID, ST_MemSize</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row6971721205312"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p797162111538">Exceptional functions</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p5971102115535">PostGIS_AddBBox, PostGIS_DropBBox, PostGIS_HasBBox</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row109631416182815"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p19641016192819">Raster Management Functions</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p19964161682818">AddRasterConstraints, DropRasterConstraints, AddOverviewConstraints, DropOverviewConstraints, PostGIS_GDAL_Version, PostGIS_Raster_Lib_Build_Date, PostGIS_Raster_Lib_Version, and ST_GDALDrivers, and UpdateRasterSRID</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row1721062613413"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p12210192693420">Raster Constructors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p102101126123416">ST_AddBand, ST_AsRaster, ST_Band, ST_MakeEmptyRaster, ST_Tile, and ST_FromGDALRaster</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row1810571383617"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1210515139360">Raster Accessors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p21051713173612">ST_GeoReference, ST_Height, ST_IsEmpty, ST_MetaData, ST_NumBands, ST_PixelHeight, ST_PixelWidth, ST_ScaleX, ST_ScaleY, ST_RasterToWorldCoord, ST_RasterToWorldCoordX, ST_RasterToWorldCoordY, ST_Rotation, ST_SkewX, ST_SkewY, ST_SRID, ST_Summary, ST_UpperLeftX, ST_UpperLeftY, ST_Width, ST_WorldToRasterCoord, ST_WorldToRasterCoordX, ST_WorldToRasterCoordY</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row204871147114014"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1248884720409">Raster Band Accessors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p848816471408">ST_BandMetaData, ST_BandNoDataValue, ST_BandIsNoData, ST_BandPath, ST_BandPixelType, and ST_HasNoBand</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row153852085427"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p7386789424">Raster Pixel Accessors and Setters</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p15386178134218">ST_PixelAsPolygon, ST_PixelAsPolygons, ST_PixelAsPoint, ST_PixelAsPoints, ST_PixelAsCentroid, ST_PixelAsCentroids, ST_Value, ST_NearestValue, ST_Neighborhood, ST_SetValue, ST_SetValues, ST_DumpValues, and ST_PixelOfValue</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row18775152444"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p17775559441">Raster Editors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p677520513445">ST_SetGeoReference, ST_SetRotation, ST_SetScale, ST_SetSkew, ST_SetSRID, ST_SetUpperLeft, ST_Resample, ST_Rescale, ST_Reskew, and ST_SnapToGrid, ST_Resize, and ST_Transform</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row58743257463"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p187412594614">Raster Band Editors</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p1187510255462">ST_SetBandNoDataValue and ST_SetBandIsNoData</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row16494144744618"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p3494447164616">Raster Band Statistics and Analytics</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p4494184764612">ST_Count, ST_CountAgg, ST_Histogram, ST_Quantile, ST_SummaryStats, ST_SummaryStatsAgg, and ST_ValueCount</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row16657191516488"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1657715114817">Raster Outputs</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p265771564811">ST_AsBinary, ST_AsGDALRaster, ST_AsJPEG, ST_AsPNG, and ST_AsTIFF</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row188331196497"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p198333914490">Raster Processing</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p198344924920">ST_Clip, ST_ColorMap, ST_Intersection, ST_MapAlgebra, ST_Reclass, and ST_Union ST_Distinct4ma, ST_InvDistWeight4ma, ST_Max4ma, ST_Mean4ma, ST_Min4ma, ST_MinDist4ma, ST_Range4ma, ST_StdDev4ma, and ST _Sum4ma, ST_Aspect, ST_HillShade, ST_Roughness, ST_Slope, ST_TPI, ST_TRI, Box3D, ST_ConvexHull, ST_DumpAsPolygons, and ST_ Envelope, ST_MinConvexHull, ST_Polygon, ST_Contains, ST_ContainsProperly, ST_Covers, ST_CoveredBy, ST_Disjoint, ST_Intersects, and ST_Overlaps, ST_Touches, ST_SameAlignment, ST_NotSameAlignmentReason, ST_Within, ST_DWithin, and ST_DFullyWithin</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001233883215__row255131410207"><td class="cellrowborder" valign="top" width="24%" headers="mcps1.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000001233883215__p1571514142010">Raster Operators</p>
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</td>
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<td class="cellrowborder" valign="top" width="76%" headers="mcps1.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000001233883215__p14571714192010">&&, &<, &>, =, @, ~=, and ~</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="section" id="EN-US_TOPIC_0000001233883215__section2993751311"><h4 class="sectiontitle">Spatial Indexes</h4><p id="EN-US_TOPIC_0000001233883215__p10578174055816">In <span id="EN-US_TOPIC_0000001233883215__text2093557678">GaussDB(DWS)</span>, PostGIS Extension supports Generalized Search Tree (GIST) spatial indexes. This index type is inapplicable to partitioned tables. Different from B-tree indexes, GIS indexes are adaptable to all kinds of irregular data structures, which can effectively improve the retrieval efficiency for geometry and geographic data.</p>
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<p id="EN-US_TOPIC_0000001233883215__p48972044178">Run the following command to create a GiST index:</p>
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<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001233883215__screen17652152518452"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">INDEX</span><span class="w"> </span><span class="n">indexname</span><span class="w"> </span><span class="k">ON</span><span class="w"> </span><span class="n">tablename</span><span class="w"> </span><span class="k">USING</span><span class="w"> </span><span class="n">GIST</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">geometryfield</span><span class="w"> </span><span class="p">);</span>
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</pre></div></td></tr></table></div>
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<div class="section" id="EN-US_TOPIC_0000001233883215__section13902113312416"><h4 class="sectiontitle">Extension Constraints</h4><ul id="EN-US_TOPIC_0000001233883215__ul17771948131018"><li id="EN-US_TOPIC_0000001233883215__li16771548131016">Only row-store tables are supported.</li><li id="EN-US_TOPIC_0000001233883215__li541594174118">Only Oracle-compatible databases are supported.</li><li id="EN-US_TOPIC_0000001233883215__li07317558101">The topology object management module, Topology, is not supported.</li><li id="EN-US_TOPIC_0000001233883215__li14818417110">BRIN indexes are not supported.</li><li id="EN-US_TOPIC_0000001233883215__li1117511305615">The <strong id="EN-US_TOPIC_0000001233883215__b2933181714339">spatial_ref_sys</strong> table can only be queried during scale-out.</li></ul>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0301.html">PostGIS Extension</a></div>
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</div>
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