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

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Using MOD within a GROUP BY subquery on point dataset

I have a dataset of 200 points (in shp/f gdb/p gdb format) in ArcGIS. I am trying to use the MOD() function within a GROUP BY subquery as a definition query on the layer to thin out the data. What ...
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22 views

MapInfo Calculating the number of Points that Fall within a Boundary

I have two layers in MapInfo (points and polygons). I need to select points which fall within polygons where the income > 1500 I tryed this one but not working: ...
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22 views

Merging multiple tables using SQL in CartoDB

I have 5 separate tables in CartoDB each with a varying number of columns, but all containing these 4 columns (the_geom, name, type, unit_code). I want to merge them all into 1 new table and get rid ...
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7 views

SQL query syntax for NDVI grid in ArcGIS for Desktop?

I am trying to extract by attribute pixels with a Value >0 (i.e., the vegetation in an NDVI grid file) in ArcGIS. Every time I try to extract by attribute (spatial analyst tools/extraction), my SQL ...
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1answer
26 views

PostGis - BBox -vs- ST_intersects Queries

CartoDb Recommend here that the following query is faster than an St_intersects Query SELECT * FROM {table_name} WHERE the_geom && ST_SetSRID(ST_MakeBox2D(ST_Point(-73.9980, 40.726), ...
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11 views

Walking-Driving area with Leaflet,OpenLayers

Could be possible to get a walking or driving distance area using pgr_drivindistance,pgr_alphashape and/or pgr_pointsaspolygon when an user click any location on map with Leaflet or OpenLayers?. I ...
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31 views

Spatial query too slow to handle bigger OSM extracts

I'm trying to compute some statistics for OSM data using PostgreSQL 9.3.5 and PostGIS 2.1.4. I started with a small bavaria extract which I downloaded from Geofabrik. The db schema is the normal API ...
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24 views

`Execute SQL` in Processing QGIS 2.6

I made a small model with Processing in QGIS 2.6. The final layer should be the result of a SQL query. Now, in the Execute SQL dialog window I can add the query: select name, max(ele) as ele, geom ...
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46 views

How can I add another WHERE filter to a PostGIS query?

I have this query, which works well, for an OSM database: SELECT row_to_json(fc) FROM ( SELECT ST_AsGeoJSON(ST_Transform(ST_Intersection(lg.geometry, bbox.geom), 4326))::json As geometry, ( ...
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41 views

SQL query works in PostgreSQL but not in GeoServer SQL View

I can't find a solution for this problem after a couple of hours of research. The query is: SELECT searchaddress('some string'); FETCH ALL IN mycursor; The function searchaddress returns a ...
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33 views

CartoDB layer selector - selecting data from 2 layers

I used the CartoDB layer selector example (http://cartodb.github.io/cartodb.js/examples/layer_selector.html) with my data. Works fine. Now, what I really want to do is to select data from 2 layers at ...
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26 views

Link to another table in CartoDB infowindow

I have two layers in CartoDB, one with spatial data, school_count, and one without, heisman_winners. I want to visualize my spatial layer but when a user clicks on a feature I want it to display data ...
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1answer
35 views

SQL query as part of featureClick in CartoDB.js

I am a complete novice at both Javascript and SQL so am learning as I'm going with this! I have made a webpage that shows a map with a layer of points on the left hand side of the page. What I want ...
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32 views

Splitting Column in SQL into many [closed]

I have a SQL column named "details" and it contains the following data: 1)<changes><RoundID><new>8394</new></RoundID><RoundLeg><new>JAYS CLOSE AL6 ...
2
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1answer
34 views

Why can't I add a Spatialite table with clip results in QGIS?

I have 2 layers and I want to make a clip of layer 1 with layer 2 in SpatiaLite (I'm using the DB Manager within QGIS). That's the code I'm using: create table clipped_lines as select * from lines, ...
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1answer
39 views

MapInfo, SQL data from multiple tab files which have the same columns

New to the GIS forum so apologies in advance for any potential etiquette failures... I'm working in MapInfo. I have multiple tables with the same structure. One of my columns is pipe diameter. I ...
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1answer
22 views

CartoDB - “sql applied has errors” message - where can I see the error text?

I'm still getting my bearings with the interface it seems... When running a SQL query in CartoDB against a table... it seems like a get the correct result, but I also get a see a "sql applied has ...
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1answer
21 views

send to WFS a custom sql query using jquery

If anyone please, could gimme me a hand on this question. I have a web sql client that the user can write a sql statement and I want to sent it via WFS to geoserver, run it, and based on the results, ...
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66 views

Query for numeric field against text field that contains a numeric value

In my database, I have one field, Service_Day, formatted as numeric, which contains a single digit number 1 through 7 (for days of week). I want to compare it against another field, called Region, ...
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1answer
29 views

SQL in CartoDB to select using OR more efficiently

I made this map a CartoDB map to to show the countries that have banned their citizens working as maids in the Gulf states, I also want to show the Gulf states as one colour. I created this SQL ...
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2answers
38 views

Can I include data from multiple rows in CartoDB infowindow?

I have a visualization in CartoDB of a set of data points in table pointlayer. I am using cartodb.js and have a nice map for browser consumption. When a user clicks on a point, I'd like to run a sql ...
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77 views

Preserve datatypes when using SQLite and QGIS

Following Nathan's SpatiaLite/DBManager solution in this answer, I find that once the layer is loaded from DB Manager into QGIS (2.6.1), any calculated fields are appearing as text values instead of ...
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70 views

How to use cartodb.js without storing sql in javascript

Using cartodb.js, how can I change the layer definition without building the sql dynamically in javascript and passing it as a parameter. Aside from revealing my table structure (not a huge deal at ...
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61 views

Multi Value User Input as Variable in SQL Statement

I'm attempting to write a script that takes a user's selection as a parameter and uses that as part of the SelectByAttributes function. The parameter represents field attributes and is multi value, ...
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15 views

SpatiaLite / QspatiaLite: get subgroup row ids

I'm using QspatiaLite plugin to join polygon ids to points that are within those polygons. Now I' d like to get subgroup rownumbers for each subgroup of points with same polygon id! Like so.. grp_ID ...
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5answers
112 views

Selectively removing whitespace from a string with SQL

I have two columns of adresses that I need to join. Column 1 has the adresses formatted as "Some Street 12 A" while column 2 has them formatted as "Some Street 12A." Ie. the last whitespace between ...
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31 views

Modeling SQL Query to add statistical data to a geometry

Hello I have a problem modelling a SQL Query for the following problem: I have two tables with geometries from Shapefile der Verwaltungsgrenzen (WGS84). Of interest for me are Kreise and Gemeinden, ...
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31 views

Query for finding nearest distance and driving time from objects in a different tables

I have 4 postGIS tables: employees_wgs Facilites and (created by osm2po): at_2po_4pgr at_2po_4pgr_vertices_pgr What I want to do is: make a query to populate two columns in "employees_wgs" ...
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27 views

How to save SQL-like WHERE as .qqf in QGIS 2.6?

I used to use QGIS 1.7.4. And there was "advanced search". I can save SQL where clause as .qqf. But I installed QGIS 2.6 and I cannot find this kind of things. Could you please teach me how to save ...
6
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99 views

SQL “Case” statement when count(*) is 0

I am trying to write the following SQL command using case clause. with x as (select the_geom as geom from table1 where st_dwithin(the_geom, st_setsrid(st_makepoint(28.959495,41.019913), 4326), ...
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69 views

Computing intersections for each geometry in a table

I have a table with many Linestrings and for each of these Linestrings I need to figure out which other Linestrings, from the same table, intersect with it. If I recall correctly this gives me a ...
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1answer
44 views

OGROGR and SQL: unexpected reserved keyword error?

As I do the following query on naturalearth places.shp : ogr2ogr -f GeoJSON -sql "SELECT * FROM ne_10m_populated_places WHERE ADM0NAME = 'India' ORDER BY POP_MAX DESC LIMIT 1,30" places.tmp.geo.json ...
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89 views

OGR2OGR and SQL: selecting 30 biggest places from a country?

I use ogr2org to filter naturalearth places.shp : ogr2ogr -f GeoJSON -where "ADM0NAME = 'India' AND POP_MAX > 500000" places.tmp.geo.json ne_10m_populated_places.shp I would prefer to select the ...
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1answer
52 views

How to perform a calculation using attributes of groups of features in ArcGIS?

I have a table with information about 2000 aquifers (thickness, area, depth, volume etc.; there are 20 fields approximately). One of these fields is an internal code, i.e. DK_12_456_XXX; the last 3 ...
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2answers
58 views

SQL filter to show one layer only if another layer is missing

I have two oracle tables that represent buildings in my town. The first table represent buildings that are surveyed and measured accurately but doesn't cover all the parts of the town while the second ...
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2answers
219 views

Spatial join versus classical join

What are the main differences between a spatial join and a classical database join such as an equi (inner) join?
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43 views

SpatiaLite - WITH, view or sub-query?

I am running on Windows 8.1 SpatiaLite_gui 1.8.0, SpatiaLite version 4.2.0 and SQLite 3.8.5. I need to interrogate one single spatial table whith those attributes: ID | val | val_1 | val_2 | Geom ...
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16 views

Needing to find parent zip code of a bunch of missing zip codes in the US

We're using MapPoint to export zip code / territory combinations. Unfortunately, the export doesn't include PO Box zip codes which mean that we're missing a lot of zip codes The PO Box zip codes are ...
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78 views

ModelBuilder Iterate Row Selection & Variable Expected Fields in Summary Statistics

I have a model using a Iterate Row Selection. The inline variable produced by the iterator is used in the SQL expression of a Table Select tool. Note that this Table Select tool does not use the ...
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238 views

ArcMap “One or more layers failed to draw: An invalid SQL statement was used”

I created a model involving the tool Make XY Event Layer because I want to plot latitude and longitude points in CSV file columns. The model runs without errors and appears to have plotted the points ...
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84 views

How to draw radius of a circular point buffer using PostGIS

I have generated circular buffers of points in a shapefile. The generated circles and points share a common ID/key, say pt_id. My question is Is it possible to use PostGIS to generate a third layer ...
4
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1answer
102 views

SQL-query in arcpy - SELECT WHERE feature between two values

I need to select features between two values in python with arcpy. However, whenever I try to run the code below, it returns with error message "An invalid SQL statement was used". whereclause = ...
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0answers
38 views

Apply raster contraints on single table with multiple files

I have a raster table (pre-created using CREATE TABLE) containing multiple individual raster files that I append piece by piece to a final table. The table itself is in its own tablespace 'gisdir' and ...
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2answers
59 views

How to use an IF THEN statement in an sql Select expression?

I need to select the top 3 records from a table, but depending on an inline variable from an iteration, occasionally one of those top 3 records should not be selected and should be replaced by the top ...
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30 views

ERROR: operator is not unique: unknown || geometry

EXECUTE 'INSERT INTO Panden_intersect(St_ints,pnd1,pnd1_area,status1,dtm_strt1,pnd2,pnd2_area,status2,dtm_strt2,CtrDist) Values ( ...
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1answer
131 views

What options are there for geolocation-aware SQL databses?

I need to implement an SQL database that can make queries using geo-location based logic. e.g. select rows within 500m of coordinate x, y What options are available to do this with sqlite, mySQL, ...
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44 views

ogr2ogr export to KML from SQLite, when using SELECT for fields Linestrings are lost

I'm using: ogr2ogr -sql "SELECT * FROM 'trails_utm_utf8' ORDER BY name ASC" -f KML trails.kml trails_utm_utf8.sqlite -s_srs EPSG:900913 -t_srs EPSG:4326 to reorder, re-project and export to KML ...
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0answers
58 views

SQL Query does not work in ModelBuilder (but works elsewhere)

I am having issues getting a simple SQL query to work in model builder. It works fine when I use it with the standard "Select features by attributes tool", but ModelBuilder doesn't find the required ...
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2answers
81 views

Postgis: Point-in-polygon check + feature attributes inheritance

I have two tables in Postgis 2.1 database: Polygon features with a reach attributive information; Regular point grid; I would like to get a SQL query returning the regular point grid with ...
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507 views

What does “foo” stand for in this PostGIS command?

The help page for the PostGIS function ST_PixelAsCentroids has this line of code as a usage example: SELECT x, y, val, ST_AsText(geom) FROM (SELECT (ST_PixelAsCentroids(rast, 1)).* FROM dummy_rast ...