A command used to retrieve information from a database

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5 views

How to pass time dimension to postgis DB layer WHERE clause in Geoserver?

I have successfully configured a layer with time dimension that is backed by an SQL query to a postgis DB. I can query it throug WMS, no problem so far, but I just can't find a way to pass the start ...
-3
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0answers
13 views

MySQL Query in WAMP [on hold]

How can i query the last row in MySQL DB in WAMP, and then display those coordinates in ArcMap ?
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0answers
18 views

Selecting cells with values from DEM those are above specific value corresponding to each polygon?

i have a shapefile with 2000 polygons and a DEM. i want to calculate zonal mean for each polygon considering values from DEM which are above a particular value for each polygon. i want to it with ...
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0answers
24 views

Most representative spatial queries [closed]

I would like to do few tests of different spatial databases and compare response times for different types of queries. There are some studies available but they often do not present the selection of ...
1
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1answer
37 views

Changing Query Layer's SQL Expression with Python

I use query layers in ArcMap 10.4. The maps need to be done/repeated periodically. The easiest way is to copy the map, change the source's SQL expression (e.g. from select * from TABLE where Period = ...
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0answers
26 views

How can I determine an appropriate query based on a join?

I am having trouble coming up with a query that will show the 12 states total population percentage in ArcMap 10.4. I created the spreadsheet below and I have already joined my excel to the states ...
0
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1answer
24 views

Search widget expression

I am trying to migrate my Flex eSearch widget to the CMV Search widget. The query is not working. What can I do to make it work? Flex query: <value prompt="Example: MN or ...
1
vote
2answers
47 views

Calculate area parts of polygon intersections

I have a problem of calculating area sizes of intersected polygons in postgis. I would represent the problem in an example (please see the picture). I have a gridsquare table with some attributes like ...
3
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1answer
22 views

QGIS: Error message in query builder

I am using QGIS version 2.14.1 (Essen) and trying to update data in my table using field calculator. I am inputing the following statement: update "table_1" set "table_1" ='y' where "table_2" ...
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2answers
38 views

How to specify two different and separate conditions in query builder?

For example, I have a table containing well log data for multiple operable units. I would like to make a query outputting a table where Operable unit=001 OR 002, AND Formation= Residuum. I would ...
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0answers
10 views

How can I create a definition query to show the next 5 years of data, based on a text field with the year on a joined table in SDE?

I need to show the next 5 years of construction data, but I want it to automatically update what is shown based on a text field called ConYearStartNbr that shows when the construction is set to start ...
2
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1answer
77 views

SQL / Select by Attributes query for “does not include text found in another specified field”

I'm using ArcMap 10.2 and I'd like to write a query to select features where Field A does not include text found in Field B. Specifically, Field A contains street numbers and street names. Field B ...
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0answers
30 views

Accessing array of x,y coordinates stored as MDSYS.SDO_GEOMETRY / PUBLIC.SDO_GEOMETRY attribute in Oracle 11g?

I am totally new to GIS. I am working with a table in an Oracle 11g database. In each row of this table there are two attributes of interest: one is of type MDSYS.SDO_GEOMETRY and the other ...
1
vote
2answers
42 views

Using PostGIS to query shape files

I am very new to PostGIS (started using it this morning). My goal is to determine if a lat/long point is contained inside a polygon that is described in a shape file (The shape file has a single ...
0
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1answer
38 views

how to skip creating an empty feature class using featureclass to featureclass in arcpy

I have a script that finds points outside of selected areas and creates a feature class in a file geodatabase. However, sometimes there are no points outside of the selected area. Currently, the ...
1
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1answer
40 views

Use spatial queries on multiple layers in QGIS

Is there a way to perform spatial queries on multiple layers in QGIS without going through an external database? I would like to perform SQL-like queries on layers imported in QGIS directly, but can't ...
1
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0answers
22 views

Testing Oracle query produces valid results in QGIS Python Console

I have a query that searches an Oracle database using a where clause to get the geometry of an object and then zooms to the extent of that object. The value for the where clause is retrieved from a ...
1
vote
2answers
64 views

How to add state polygon information to a city point?

I have the following layers: Country border federal state borders cities (located as points) I would need the following result file (txt or csv..): A column with the name of the city and another ...
5
votes
1answer
174 views

How to build a query/expression to select specific points within a buffer? (in QGIS)

I have a point layer in QGIS. Each point represents a tree and each tree has information about its height as an attribute. I would like to build a query/expression to select all those trees that have ...
1
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1answer
55 views

query.where statement using date range in JS API fails with IE 11 but works fine with Chrome and Firefox

My aim to display point data from a feature layer on ArcGIS for JS map interface. I am successful doing so in Chrome and Firefox, however when I include date in a where condition of a query execute it ...
3
votes
2answers
149 views

Selecting more than 1,000 features from AGOL hosted feature service?

When data from a cloud-hosted feature service is loaded into ArcMap, it queries the first 1,000 features "to enhance performance"... I, however, need to see all the features. How can I add all ...
3
votes
1answer
103 views

Distance in meters between two geographic coordinates

I want to determine the distance in meters between two geographic coordinates. The points are: Lat (deg) Lon (deg) A: -33.3930906 -70.5452765 B: -33.3993212 -70.5468767 So if i calc the ...
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1answer
48 views

How can I add a new layer, then remove previous layer from a Leaflet/CartdoDB map without the map clearing everything

I am new to CartoDB/Leaflet. Here's my fiddle... http://jsfiddle.net/zippyferguson/fLkqgf4q/1/ If you click the play button, I want it to load data to the map year by year from 1966 to 2015 from a ...
0
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1answer
53 views

Arc 10.2.2 crashes when adding query layer?

I'm trying to add a query layer from an Oracle database into a blank 10.2.2. map. I enter the query, validate, finish, and the software thinks for a second and then just winks out. No error ...
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1answer
57 views

Creating a menu interface to update an sde feature class in ArcMap using arcpy?

I work in electrical utilities and we have stacks of paper records that need to be updated into an existing SDE feature class attribute table. My problem is that someone in the city's GIS office would ...
1
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1answer
56 views

Making table from MySQL query with ArcPy?

I am trying to interact directly with data from a MySQL database in ArcMap using Python. So far, I have successfully connected the database using the MySQLdb.connect() function and have successfully ...
2
votes
1answer
51 views

QGIS and intersections

I have MultiLineString geometry data from an ESRI shapefile. I also have a polygon (region) that I have created in QGIS using the drawing tools. When I attempt to find the intersection between the ...
1
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1answer
62 views

Postgis/SpatiaLite SQL query to connect MySQL, Access or Oracle database

In SpatiaLite or Postgis, how can one create a SQL query to read a table from a MySql or Oracle database? I don't know **the correct SQL syntax to connect to a table in a MySql or Oracle database ...
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0answers
31 views

Shape comparison language (SCL) - get shapes which intersect extent border

I am trying to write a SCL string for my ArcGIS query, which should return only shapes which are intersected by a border of a rectangular shape (extent). So far the closest I've got is the following: ...
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3answers
105 views

Pass GeoJSON from .NET to Javascript

My .NET/OpenLayers/GeoServer/PostGres-PostGIS application allows users to create custom queries to get data from my PostGIS tables. The queries are called in .NET (not javascript) using a web method ...
1
vote
1answer
134 views

PostGIS Query To OpenLayers

I am trying to get data from a PostGIS datatable using .NET, pass it to javascript, create a layer in OpenLayers and add the PostGIS data to the layer. I can successfully query from the ...
1
vote
1answer
74 views

How to make a SQL query that would sum multiple records in ArcGIS?

I've got a large file geodatabase that contains a polyline feature class of water-pipes. The feature class have many fields, but the ones that I'm interested in is that of the water-pipe's Length and ...
3
votes
2answers
77 views

Copy/convert selection into filter/query builder of QGIS?

Can anyone tell me if it is possible (and how) to convert or copy a selection on a layer (that has not been created through "select by expression", but instead by irregular selections from a canvas, ...
1
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0answers
36 views

Find points within X distance with a specific variable

I am trying to use QGIS to find points within 5 meters of each other that all have a value of <50% for a given parameter that has been loaded through a CSV file. I looked in to doing it with a ...
1
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0answers
36 views

Overpass output city name instead of coordinates?

I did a query to look for certain things. However it only outputs the lat and long coordinates, there is no city data available. I'd like to have the city it belongs to / closest city though. I know ...
2
votes
2answers
86 views

Count Distinct with Where clause in OGR

I am looking to run a query in OGR to write back all instances where there is only one record of an attribute. I was thinking that I would use the following: ogrinfo -dialect sqlite -sql "SELECT ...
5
votes
1answer
185 views

ESRI Javascript FeatureLayer Select by Attributes

I am trying to select a group of features in an ESRI javascript API featureLayer by attribute. The call errors out. My code is as follows. Here is the layer definition: var fieldDefs = [{ ...
1
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1answer
49 views

Delete polygonal features in one layer outside polygon feature of another layer in PostGIS

For deleting polygonal features in one layer (~1000000 features) outside polygon feature of another layer (one feature) in PostGIS I use query: DELETE FROM layer WHERE layer.id IN (SELECT a.id FROM ...
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0answers
51 views

Publish postgis raster based on column value in geoserver

I have a postgis raster table with the following columns: rid, rast, year, plant I created a wms layer in geoserver pointing to the table and successfully serve out the raster when the table only has ...
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0answers
60 views

Overpass-API Ability to download the nodes and ways that intersect the ways of one relation

i am trying to do a query that will detect if a node or way that is included in a relation is also referenced by other ways,nodes or relations. Not sure if this is possbile, i had tried to do this ...
1
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1answer
83 views

Dojo Promise/All Array Not Populating InfoTemplate in ArcGIS Javascript

Using dojo/promise/all I'm attempting to populate an infoTemplate with results from a queryTask which runs later in the script. Our app returns an XY value from a geocoded address search and queries ...
1
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0answers
23 views

How to show neighboring polygons and polygon in which point exists

We have a table which has polygon related data stored. For finding if a point (long,lat) is within that polygon I am using following query in mysql SET @vasantKunjSectorC = 'polygon((77.161266 ...
2
votes
2answers
201 views

Selecting features within polygon from another layer using R or Python?

For Selecting features within polygon from another layer using QGIS? the solution was to: use the "Vector->Research tools->Select by Location" However, I would like to know how to do the same ...
1
vote
1answer
39 views

Query across layers of SHP files?

I would like to query features from a SHP vector that intersect with features from another vector. Pseudocode: "Name" IS intersects( countries) How would be the valid query composed?
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0answers
36 views

Partial extents for ArcGIS android geodatabase creation

I know how to create and download a geodatabase copy of a FeatureServer from arcgis rest services. I also know how to pass LayerQuery to the geodatabase task to filter layer objects and features. ...
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votes
2answers
145 views

Sql Query in Postgresql

I am trying to execute a query but I am stuck. I have two tables A and B. The a table has columns gid, geometry(line-string) and value which cells is empty , the B table has got 3 columns gid, ...
5
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2answers
657 views

QGIS Filtering Multiple Values using Query Builder

I am a complete beginner in QGIS, so I'm sorry if I don't use the right terminology. In the "Query Builder" I can currently filter on value from the "Values List", but I'd like to be able to filter ...
1
vote
1answer
41 views

Cannot find table in geodatabase

I was using the Make Query Table tool in ArcGIS. Once the tool finishes running, the result (a table whose name I specify) is automatically added to the Table of Contents and I can view the data ...
1
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0answers
55 views

Python code and modelbuilder [closed]

I am working with ArcGIS 10.2 and using python to use the function for zoom to selected feature. I need to have this zoom to selected feature work for any project and I also need drop down menus for ...
0
votes
1answer
834 views

SQL Server Spatial Querying

I am looking for ways to learn querying for SQL Server Spatial (2008/2012). I have a table created from Shape2SQL and have been trying to run a simple intersection query to get results from that ...