A command used to retrieve information from a database

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1answer
31 views

How to export query result on raster table in PostGIS

I did success query on a raster table in postGIS(raster data clipped by a vector polygon), now I want to view the query result in QGIS. But how to export the query result to another table. In vector ...
0
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3answers
134 views

postgis insert query to store geometry and other data

I'm using Postgis functions st_dump and st_split to split a polygon based on line. Now, after splitting; output geometry stores in a database table as well. Here is the query: insert into aoo(geom) ...
0
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1answer
41 views

PostGIS Group By Error [closed]

I am performing a pretty simple query in PostGIS 2.1.1 from within QGIS 2.2 for Windows (using the DB Manager plugin). I have a table with many columns and I am trying to perform a Group By function. ...
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0answers
55 views

Join Standalone Tables from ArcGIS Server in Javascript API

I am trying to find a way to execute the equivalent of the following query with the ArcGIS JavaScript API (I made field and table names generic): SELECT a.field1, a.field2 FROM table1 a, table2 b ...
2
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2answers
76 views

How to download only selected attributes using Overpass turbo?

does anyone know of a query to download select attributes using Overpass turbo? I am trying to download very granular road dataset for an entire country, but I only want a few columns. Thanks!
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0answers
40 views

The difference when querying raster and vector

Hi everyone I have two queries have the same meaning but different results. Why is there a difference?. Queries are true? query 1: query 2:
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1answer
95 views

Extract address data / Query point in administrative boundary

I try to create a DB in postgreSQL with all the postal adress data for a specific country. Actually I have this table full of data: id integer NOT NULL DEFAULT nextval('plz_id_seq'::regclass), ...
0
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0answers
67 views

pgrouting pgr_drivingdistance() query gives inconsistent results

So I have been working on a query(with the help of other stackexchangers :)) to get the edges in an isochrone from a particular point and then update the count_events field of those edges by some ...
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2answers
88 views

Keep receiving query error in Flex Viewer for Search Widget in ArcGIS Server

I am not sure what is going wrong, but I keep receiving this query error http://i.imgur.com/XXSpEpH.png Here are the settings for the search widget <?xml version="1.0" ?> ...
0
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1answer
300 views

SQL Geometry Query similar to Select by Centroid

Does anyone know if it's possible to query SQL geometry by something like 'centroid of polygon'...similar to ArcMap's select by location? I'm using SQL Server 2008 R2 as the DBMS. I have two polygon ...
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0answers
91 views

Clipping multiple layers in QGIS 2.2

I have huge amounts of data (multiple country-wide shapefiles) which i have to work with constantly. But working on separate cases i only need a fraction of that data (region, city etc.) Loading the ...
0
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1answer
182 views

How to write to Sql server from MapBasic and insert rows

I have created a table in Sql server 2014 with the columns: Id (int), Geom (geometry), RouteId (int), Desc (varchar(MAX)) I have succeeded in making the table mappable through MapInfo I have checked ...
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0answers
148 views

Java script vehicle tracking application

I am using ArcGIS and Server to build n application to track vehicles via tablet GPS in the vehicles. My original plan was to use a feature class to store point location and then display the most ...
3
votes
1answer
513 views

Problem PostGIS Spatial Query ST_Contains ST_Disjoint ST_Intersects

I'm working on a project with two different tables inside a database. One contains points in a column geometry(Point,4326) type and the second one has a column geometry(MultiPolygon,4326). Now I would ...
1
vote
1answer
240 views

query / filter on attribute tables with external tables joined

i tried to do some queries on joiend table fields ... i've got/found some answers concerning version 1.8 - which result in "use select + export to create a combined dataset" so i just did some tests ...
1
vote
2answers
266 views

Sql Query for percent of buffer filled with objects

Hi I am trying to write a query to find the percentage of a buffer polygon (Called 250_Buffer) that is filled with or contains other polygons in another layer (Called Development) any help that you ...
14
votes
1answer
361 views

How to query OSM for all beaches facing west? - QGIS preferred

I want to identify all beaches on this planet (or a given subset of it) that are facing westwards (+/- 20-30 degrees). My idea is to use OSM as the data source. Extracting all polygons that have the ...
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2answers
319 views

Searching planet_osm_point by longitude and latitude

I used osm2pgsql to import data into my PostgreSQL database and it put gave me the following 4 tables, planet_osm_point, planet_osm_line, planet_osm_polygon and planet_osm_roads. I have looked at ...
-3
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1answer
48 views

Is there a function when using Select by attributes, to select only the continents' annotations?

Annotations beginning with character "C" refers to continents and I want to select only these annotations.
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1answer
45 views

Keep column titles when exporting SQL query in MapInfo

Is there a way to keep column titles when exporting a query in MapInfo as a csv or a new tab. This is my result: And my export looks like this: It's not a major issue, I jus like saving myself ...
1
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1answer
54 views

MakeQueryTable_management

When I run this code, it says "An invalid SQL statement was used". Any idea what does it mean? import arcpy from arcpy import env env.workspace ="C:/RG/Projects/CriticalDataNetwork/CDEC.gdb" try: ...
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0answers
73 views

How to Build Query Table from two OLE DB tables using ArcPy?

When I run the following code to create a subset of a table, the error says "An invalid SQL statement was used" [Query]. The error shows in line 39. Is there any idea you can figure this out? import ...
0
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1answer
80 views

Is it possible to do a query to multiple tables?

I have a point a line and a polygon layer. They have the same attribute table. Can I do one query that refers to all the attribute tables? So I wouldn't have to do every query three times. Thanks. ...
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0answers
86 views

How do I use Arcpy to label based on two different expressions, then convert to annotation?

I am trying to open an mxd and turn on labels before converting them to annotation. I would like to turn on labels with 2 different classes, based on 2 different expressions, then convert them to 1 ...
0
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1answer
808 views

JavaScript API - Query and Edit point from Feature Layer

I am attempting to recreate the ESRI example for attribute inspections (https://developers.arcgis.com/javascript/jssamples/ed_attribute_inspector.html). I am having an issue when I create my feature ...
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0answers
50 views

Automatically update the result of a QueryTask

I have developed a application using the ESRI JS API to allow users to create and edit features in a web map. I have used the QueryTask to create summary statistics to report back to the user on ...
0
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1answer
61 views

Multiple field vbscript query

I'm fairly new to arc gis and I'm trying to string along several queries. individually they work in same query they don't. background I want to query all permit types rc, re, re/ap, and db; less than ...
2
votes
1answer
136 views

Area of polygon split by a line

I need a query that return the area of two polygons that have been split by a line. This is what I did so far: SELECT ST_Area(ST_Split(surface.geom, limite_a.geom)) from surface, limite_a where ...
0
votes
2answers
52 views

How can I optimize this point-linking query?

I have the following query, and am wondering how it could be optimised to run faster: WITH gps_nodes_1 AS ( SELECT "NODE_ID", "geog" FROM gps_nodes WHERE ST_Distance("geog",ST_GeogFromText('POINT( ...
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0answers
30 views

Problem using test search for tags in ArcGIS JavaScript API

I have the next problem with a query using the ArcGIS Javascript API, when I execute this code: portal.queryItems({ q: queryGroup+' AND tags:"' + tagsInserted+ '" ', num: 100 ...
2
votes
1answer
236 views

ST_Intersects() in WHERE clause misses results

I have a table with a lot of geographical objects like countries, cities or points inside the cities. For instance # SELECT id, ST_AsText(location) FROM brace_brace WHERE id IN (3, 42); id | ...
1
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0answers
37 views

Forcing Hash Join Query Plans using PostGIS

I'm currently testing PostGIS 2.0 in a Greenplum Appliance (Postgres 8.2 based) and have hit an incompatibility between PostGIS and the MPP Greenplum environment. The basic query below can't be ...
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2answers
188 views

Using Qt Designer to Create a Form in QGIS that can search for a specific point in a layer

Good Day! I would like to ask if you can create a form in Qt Designer to create a form that can search for a point on the map using data that the user will provide such as the Name. I am currently ...
0
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0answers
43 views

View for SDE Permissions for SQLServer

Does anyone know the correct tables and joins to write a view to see the permissions on objects in SDE? Here is what I had in 9.3 and it doesn't seem to work (ie., all Permissions are Edit b/c the ...
0
votes
1answer
59 views

ModelBuilder - use in line variable in expression

I have an in line variable of two fields (field1_field2) in modelbuilder. Using the make feature layer tool, I would like to make an expression that queries field2. Can an expression in the make ...
1
vote
0answers
118 views

Invalid spatial reference Error

I am getting the error: Invalid spatial reference. Spatial reference must match map's spatial reference. Clear the map layers collection prior to changing the spatial reference when I try to ...
1
vote
1answer
70 views

Problem with runing a loop in a query in PostGIS

I am new to PostGIS and I have a question which can't solve. I have a table of buildings each having a value for number of people living in it. I would like to calculate the total value (sum of number ...
0
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0answers
41 views

display route from database(postgresql) on

For first part: Link i have postgresql9.1,postgis2,pgrouting2 and qgis2.2 this is the second part of what i need to do: Search in a database (postgresql with pgrouting) for a line from public ...
0
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0answers
90 views

Why is Freehand Spatial Query in ArcGIS for Server not working?

I have been using the Spacial Query tool from ESRI to implement more functionality into my GIS application. The query works for a square, circle, and oval; but it does not return anything if the user ...
0
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0answers
89 views

QGIS spatial query cryptic error message

I tried running a spatial query plugin to return features in SpatialLite layer that fall within selected feature on MapInfo .TAB layer, which worked fine, selecting 3 items. But when I tried creating ...
0
votes
1answer
722 views

How do I search dates using the ArcGIS REST API?

I'm trying to understand how dates are queried in the ArcGIS Server REST API (v10) using the query functionality (...MapServer/find?searchText=...). If I search on a string attribute I can get a ...
1
vote
0answers
92 views

How to build a query tool for spatialite data in QGIS?

I am trying to build some tool for a collegue of mine to query data from a spatialite database while clicking on vector features. My first guess is, that I could do this with an "action" I define for ...
-1
votes
1answer
236 views

Shortest Path Dijkstra

I would like to calculate the shortest path with dijkstra algorithm. sample query SELECT seq, id1 AS node, id2 AS edge, cost FROM pgr_dijkstra(' SELECT gid AS id, ...
0
votes
1answer
102 views

How to cut/split multipolygon with blade (linestring) into two pieces using PostGIS? [closed]

I struggle to do split operation in postgis I tried to build a query but Im always fail. Id like to cut a multipoligon with a blade (a linestring) into two pieces. These two objects have specific ...
1
vote
1answer
64 views

Rewrite query to match two points with a linestring in a different database table

OK, not sure if I've worded the title brilliantly, but here goes: Suppose I have: a table "gps_nodes" containing columns: "EASTING" (containing longitude data) "NORTHING" (containing latitude ...
3
votes
1answer
585 views

PostGIS intersection function

I have a problem with intersection function. I built my query following http://manual.linfiniti.com/en/postgis/geometry.html, 5.7 section. I made my clip object, a red linestring frame: But after ...
2
votes
1answer
512 views

Definition query that returns based on date in arcgis

I was wondering if anyone knew how to build a definition query in Arcmap 10.0 that returns only features that are f.e. only 7 days old. I have a SDE geodatabase with polygons, each with a ...
3
votes
1answer
70 views

How to select an limited TOP n from a specific column in arcgis query builder

I'd like to know what is the best way to select a limited top 'n' of rows from a specific column of a geodatabase file. Currently I use a function in the query builder of the select tool (arcgis10) in ...
4
votes
1answer
82 views

Finding percentage of feature in a raster

I am attempting to find the percentage of polygon features at a 5 meter resolution that are located inside each 25km raster cell. I am looking to assign percentages to each cell based on the ...
0
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2answers
61 views

Select area which is at least x meters away from other geometries

In my table I have the build-up area from a region as a big number of polygons. urban_area: id | name | geometry(polygon) I was wondering if and how I would be able to find the area within a ...