Acronym for Structured Query Language. A syntax for retrieving and manipulating data from a relational database.

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How to use ST_DelaunayTriangles to construct a Voronoi diagram?

With PostGIS 2.1+ we can use ST_DelaunayTriangles() to generate a Delaunay triangulation, that is a dual graph of its Voronoi diagram, and, in theory, they have an exact and reversible convertion. ...
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PostGIS-Layer: sql query from style rules

Iā€™m using PostGIS layers which are build from OSM-Data (osm2pgsql). Now I like to build a sql-query to filter the needed objects like "waterway" = 'river'. But in the layer-style I already have that ...
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9 views

Adding a column to several feature classes in a file gdb using ogr2ogr

I'm trying to add the same column to 25 feature classes in an ESRI FileGDB. I managed to do this for one feature class by using ogr2ogr: ogrinfo C:\temp\test.gdb -sql "ALTER TABLE table01 ADD COLUMN ...
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12 views

How to add the values in two columns to a new column on a sync table?

We have field data coming in from an app platform and we want to drive a CartoDB visualisation to help with planning. A bunch of rangers go out surveying sites to count crocodiles. For each site, the ...
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1answer
22 views

SQL 2012 code that spatially polyline fine (join file) to a point file (target) and provides Distance Field

I am currently working in ArcMap 10.2.2 but would like the SQL code to create the same output as that provided by the Spatial Join tool. Target feature = point, Join Feature = polyline, Option ...
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1answer
43 views

PostGIS: Get closest point between geometry and Multipoint

I think my question is not that difficult for GIS professionals, but i didn't found an answer to my problem (even not in other questions). Problem: I have given two tables (table1,table2) with Points ...
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1answer
35 views

Definition Query to exclude certain values and return remaining values

I have been trying to create a Definition query to symbolize a set of water features. I cannot edit the .shp file and I want to exclude a multiple values. I have tried using NOT but have had no luck. ...
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1answer
81 views

Trying to use SQL API from Oracle PL/SQL to CartoDB

I am trying to make an http call from within an Oracle server to CartoDB. To do so I have developed a custom PL/SQL package that will generate the SQL and make the calls. A sample API call is below. ...
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36 views

Perform a group by query on geodatabase in ArcMap

I have a geodatabase called predictions.gdb and a feature class called output_gis_120_Project in that database. I imported this feature class as a layer in ArcMap. The attribute table with columns ...
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36 views

Model Builder Query by date

I've created a model that does several spatial joins based off of a lat/long in a table. In the table, I have a "Modified_date" which gives year, month, date, time. This model is set to run ...
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3answers
56 views

Find point close to points from postgis table

I have a postgis point table with a large list of cities. I need to find duplicates in it, but only if they are 10km close each other, which means that is the same city. For example, I have 5 points ...
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240 views

How to create a search box and SQL statement for searching an attribute field?

How can I add a HTML search bar that the user can use to search an attribute field for a polygon layer, and then tie that input into the SQL statement? So far I am able to hard code the query of ...
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57 views

How to select random adjacent census tract

I have set of census tracts spaced out across a city and I would like to randomly choose an adjacent census tract to explore nearby demographic data. I'm not sure if there is an easy process for ...
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1answer
98 views

In cartodb, how can I insert a new row in a table via API?

We've discovered cartodb and we want to use it in our project, but in the API documentation we've only seen the sql.execute() method (docs) in order to insert a now row in a table. Is this the way to ...
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1answer
16 views

How to perform SQL query using .STContains in MS SQL Server

I have a table that stores polygons and a table that stores points with a value field. Both sets of data are stored using the Geometry type in MS SQL Server. I have a simple requirement - I need to ...
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43 views

About the storage of GIS attributes

I'm quite new to the GIS world and I currently have some technical questions for which I have no answers yet. I'd like to know the good way to store the attributes for a feature using the PostgreSQL ...
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1answer
245 views

Python SQL connection causes crash in ArcMap

I have the following code which I have striped down to just included the part that is causing a crash in ArcMap. import pymssql # Connect to the Research db using Windows Integrated Authentication. ...
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1answer
42 views

Can't select geometry from Oracle DB using SQL

I'm trying to select the geometry field from an ArcSDE feature class in an Oracle 11g database (inside of a Python script via PyODBC). This is my query: SELECT SHAPE FROM USR.FEAT_CLASS This is ...
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1answer
45 views

Find nearest distinct features to a point

I am trying to select a single distinct features closest to an XY point in PostGIS. So I can find a single record for each distinct code by using: Select Distinct ON (code) * FROM table; Which ...
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2answers
77 views

Definition Query / SQL problem in ArcGIS

I have been working on some Definition Queries for layers in ArcGIS (10.2.0.3348). The layers connect to data in a File Geodatabase. Now I have attempted to implement the following query (1), that ...
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2answers
58 views

Query to find all lines connected to other

I have problem with one spatial (Oracle) query. Simplified overview of the problem is: I have two tables: CREATE TABLE thin_lines ( id NUMBER PRIMARY KEY, geom SDO_GEOMETRY), color ...
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170 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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1answer
35 views

Invalid SQL-Statement error when querying file-geodatabase table date field with arcobjects

I want to query a DateTime Field in a table in a file-geodatabase and I keep on getting the error "invalid sql statement" (Error Code: -2147220985) while that sql statement does not give me an error ...
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1answer
54 views

Cannot load postgis layer from sql string in pyqgis

I'm trying to load a layer using the following code in qgis python console: sql = "(select the_geom, ID from mytable)" uri = QgsDataSourceURI() ...
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128 views

How do you create a CartoDB viz with a dynamic SQL statement?

I want to create a CartoDB viz where the where parameter in my SQL statement changes dynamically at runtime. When I share my CartoDB viz from the dashboard, I can't help but notice the the SQL ...
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1answer
54 views

SQL query to have a complete geojson feature from PostGIS

I would like to get a geojson feature with properties from PostGIS. I have found an example to have a feature collection but I can't make it works for just a feature. so far I tryed to modify the ...
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1answer
20 views

geoserver fails to start with jdbcconfig community module

I have installed the geoserver JDBC config community module, but now geoserver fails to start. I have set the properties to connect to an oracle database like this: #Default GeoServer JDBC config ...
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1answer
178 views

How to import .csv file to CartoDB using SQL?

How to import .csv file to CartoDB using SQL, the data given below : POINT | TOP_dm | BOTTOM_dm | X_RD | Y_RD 35AP7600 | 4418 | 4368 | 262053 | 467223 35AP7601 | ...
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2answers
62 views

Buffer multiple roads to find points within and compare?

What I am trying to do is buffer a main st and a side street and get all of the points that intersect that buffer, however they need to be mutually exclusive. In the example below, my results would ...
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46 views

Making Map with Color Ramp Using SQL Database Intergration?

This could be a trivial question, but I've been kind of stuck on it for awhile. I'm trying to construct multiple maps that reflect aggregated data showing overall risk by county in a SQL Database ...
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1answer
305 views

SQL Server UNion of geography feature returns FULLGLOBE result?

I have some trouble with sql server 2012. I store coordinates of french cities in my database as geography object (with ESRI 4326) and i want to make the UNION of some cities. I have in result ...
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90 views

adding geometries to a source, target table for multiple rows in pgrouting

I am having an issue trying to perform the pgr_dijkstra algorithm and getting back a line in my table for multiple rows. I have a table that has a columns of source, target node id's but I cannot ...
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1answer
48 views

Spatial joining syntax

A standard PostGIS point-in-polygon query might look like this. (example tutorial) SELECT p.*,b.polyname FROM points p, shapes s WHERE ST_Within(p.the_geom,s.the_geom) Imagine this was not a ...
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2answers
154 views

Selecting maximum Value based on other field using ArcMap?

I have problems with a SQL query. The table looks like this, it is a point feature class both in postgres and file geodatabase, I am working in ArcMap. name: elev_p HEIGHT AREAid 100 1 200 1 ...
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1answer
35 views

Geoserver SQL Parameter View

I'm trying to use Geoserver Parameter SQL views, but I'm having trouble getting geoserver to recognize the parameters (and I'm not able to follow the documentation - it's not very clear to me). Here's ...
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2answers
354 views

Function for Selecting Points in a Polygon

I've been banging on this for a few hours, but since I'm relatively new to PostgreSQL and PostGIS, I can't find the solution. I'm trying to create a stored procedure (function) which will return all ...
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2answers
36 views

PostGIS SQL NOT EXISTS Statements? [closed]

I'm trying to query my PostGIS database for ID of people who did X but did not do Y. I've attempted the query below, but it does not return any results. I'm very new to SQL so I may be overlooking ...
2
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1answer
63 views

Error at or near “select” PostGIS

I'm using node.js to connect to a PostGIS database to check if an input feature significantly intersects with an existing feature. The error seems to be with the nested SELECT statement - can anyone ...
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1answer
51 views

How to find a nearest line to a point

I have a table with many points that need to be associated with street segments to calculate an average value. should I do a relationship for all points to a street segment that is closest. I have ...
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23 views

How to query the data using SQL in the infowindow of CartoDB

I want to use a SQL join to merge data from 2 tables and display it in the info-window. When I give my query Select table_2.hos_name,table_2.revenue from table_1,table_2 where table_1.area_name = ...
2
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2answers
47 views

Selection subquery using another table in database ArcGIS

I need to 'extract' a list of variables based on the IDs from another table. Using a subquery seems to be the best method. I have a large list of variables and have outside calculated a second list. ...
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28 views

Showing Linestring from SQL statement with CartoDB

I have cartodb sql statement to return what polygons are intersected by a linestring, but I'd like to have the linestring visualized over the polygons on the results. Also not add the linestring to ...
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15 views

Creating weighted list using Select tool in ModelBuilder?

I've done a raster to point conversion and have a column of the grid codes. Let's say it is composed of 10 numbers [9,5,7,1,7,3,7,2,8,1]. Right now I am doing a selection on those numbers based on ...
2
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2answers
55 views

Using MAX in SQL Expression of ArcGIS ModelBuilder?

I am trying to use a SQL expression in order to select values that are >= 25% of its max value in that column. For instance, VALUE >= MAX(VALUE)*0.25, and those will ultimately be the selected ...
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1answer
37 views

Alternative to Copy Features in ModelBuilder to display a result [closed]

I have created a model that takes in a raster, converts it to a point shapefile, then extracts a set of points based on location, then further selects a set of points based on a SQL expression. I ...
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43 views

How to export data from sql server into shapefile in the decimal format in QGIS 2.4?

The last couple of days, I have been working on exporting data from SQL to a shapefile in QGIS 2.4. While converting into a shapefile, the data type changes automatically from Float to Integer in the ...
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1answer
59 views

Controlling page count increment of Data Driven Pages using ArcPy?

I was wondering if there is a way to add coding to Data Driven Pages with python. I would like to be able to take the "Data Driven Page with Count" and increment the count by one or in some cases ...
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32 views

How can I make PROC GMAP (SAS) run is less time?

I am trying to create a map of Australia, by Local Government Area (LGA), with shaded regions displaying the population for each LGA. The shape file can be downloaded from the Australian Bureau of ...
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1answer
111 views

Select By Attribute: Between Two Numbers [closed]

I am trying to select house numbers that are between 200 and 499. I've been using: "HOUSE_" >= '200' AND "HOUSE_" <= '499' ... and it's coming up with almost everything else. The numbers it ...
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34 views

How to export data from sql database in the decimal format in QGIS?

Currently I am working with QGIS and fetching data from SQL server and export it in the format of shapefile in QGIS. While importing the data from sql server attribute table showing data with ...