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

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11 views

Compare two columns in QGIS attribute table

column A = street name column B = Building type [Residential or Commercial] what i am trying to do is get "street name" with the highest number of "Commercial" Building Type. appreciate a ...
-7
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0answers
42 views

how to minimize the time for the execution of the request? [on hold]

hello i'm tired with this query, and i would minimize the time for execution of this request, so how to minimize the time for the execution of the request (13 million MS and not yet)!! update troncon ...
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1answer
29 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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1answer
233 views

WMS layer connected to SQL database

It is possible to connect a WMS layer to a SQL database or other type of database? Example: I have created an application with Geoserver and OpenLayers. Now I can see the data from attribute table. ...
21
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6answers
5k views

PostGIS: Select features that do NOT intersect

This seems to me like such a simple question (and it probably is) yet I cannot seem to find an example that gives me the answer. Using PostGIS, I just want to select points that fall outside of ...
1
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1answer
30 views

How do I get arcpy.Select_analysis to skip conditions that don't exist

I have data from 2007 to 2015 of various animals that I'm trying to break up by year and name. I wrote a little for loop that goes through all the items in my attribute table (gps_points). The ...
7
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2answers
3k 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 ...
1
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1answer
29 views

Area of influence with CartoDB

I am working on a city transport map, and for fun (and practice) I try to make an area of influence of transport station. But, whatever I try, something gets wrong. So two questions. 1 - How can I ...
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1answer
623 views

What options are there for geolocation-aware SQL databses? [on hold]

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, ...
1
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1answer
30 views

St_ClosestPoint within St_MakeLine Query problem

I am currently trying to create the closest point (closest_ports_point_test) on the grid (lng_grid_test) from the original points (ports_point), and to create the line connecting the original and the ...
1
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0answers
67 views

Career after GIS Analyst [on hold]

I am 23 years old. BSC.IT Graduate, and currently working as a GIS Analyst in Mumbai for last 1.5 years. I am planning to do SQL Certification followed by Oracle. Would it be helpful? I am interested ...
2
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1answer
26 views

Postgis query to sort geometries by latitude

I am looking for an efficient way to get geometries sorted by their latitude (northmost in case of polygons) when querying a postGis database Something that could work in an order by clause which ...
2
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0answers
14 views

Qgis select distinct by default on Print Composer

I have a filter on Print Composer that selects "id_mov" and shows figures one by one into the map. This "id_mov" is not unique so different id can have the same "id_mov". Qgis select distinct by ...
3
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1answer
24 views

Change feature class from ESRI native geometry to SQL Server geography

Original question: I have found a lot of documentation on importing and using query layers from SQL Server into ArcCatalog/ArcMap/etc. However, when you change the projection of a feature class or use ...
0
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1answer
19 views

Spatialite union more than two layers / tables

Is there a way to union or collect any number of layer geometries with Spatialite (or another spatial database)? Two is simple enough, but more than that becomes convoluted. For example, if all I want ...
3
votes
1answer
766 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 ...
1
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3answers
202 views

ST spatial queries to select multi-level location

I'm trying to write a query in SQL Server using 1 set of points and 2 sets of polygons. The polygons overlap, and I only want to select the points that fall inside of 1 polygon but not the other. I ...
3
votes
0answers
35 views

Get domain descriptions for multiple fields using SQL (ArcSDE 10.3/Oracle back-end)

How can I get domain descriptions for multiple fields using SQL (ArcSDE 10.3/Oracle back-end)? I have successfully used the Oracle SQL in the ESRI document: Resolving domain codes to description ...
2
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0answers
24 views

How to programatically populate a field_4 after choosing values from other fields

I'm working with QGis 2.8, editing the attribute table of a SHP file, named "myTable". I need to populate field_4 with the conditions listed below: For 1 to n (it runs across records of myTable) ...
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1answer
489 views

Using sql SELECT DISTINCT in Fusion Tables API

How do I go about using sql SELECT DISTINCT in fusion tables API?
3
votes
1answer
45 views

Update ID Field Using Common Types

Not exactly sure how to word this, but hopefully I do it in a way that accurately conveys what it is that I'm trying to do... I'm using Manifold GIS for this particular project, but I'm open to any ...
0
votes
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 ...
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1answer
149 views

How to Transform Many Projections Into One With SQL Server

I know very little SQL Server, but am quite familiar with Arc and Python. The data I want to transform is point data which is in a single table [ID], [X] [Y], [COORDSYS]. There are 5 possible ...
3
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1answer
476 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 ...
2
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1answer
27 views

Export to DXF from PostgreSQL using ogr2ogr

I have a large dataset in a PostGIS database (OS MasterMap). My aim is to export specific areas of this dataset to DXF, while retaining the attributes of the data as layers in the DXF. My current ...
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1answer
40 views

Pass sql expression with GetParameterAsText to SelectLayerbyAttribute in .py script

With Arctoolbox and python scripting I'm creating long tool, but one of the steps is to select by attributes with SQL expression. Let's imagine that: featureCar = arcpy.GetParameterAsText(0) is Data ...
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0answers
24 views

Python GDAL open dataset in PostGIS with quotations

Error trying to use gdal to open a dataset in PostGIS with the following code: ds = gdal.Open("PG: dbname=nyc host=localhost user=postgres password=mypassword port=5432 mode=2 schema=public ...
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2answers
22 views

Counting points within range using CartoDB?

I have a dataset of users location and want to assign per user how many other users they have within a given range, and updating this value into a table.The dataset name is "users_20160410" and the ...
2
votes
1answer
609 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 ...
3
votes
1answer
90 views

What exactly does “enable geodatabase” perform on a SQL database

This is for those extra technical folks out there. What does "enable geodatabase" do to the structure and capabilities of a Microsoft 2012 SQL database. Since I'm a GIS guy and not a SQL guy, I need ...
0
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0answers
9 views

Date Query 10.3 SQL SDE vs FGDC

I have a date field "FIRE_DSCR_DT" that I want to query for a specific month(s). For example,I want to get all of the records where the month = January. This query did not work in SDE, but it did ...
3
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2answers
38 views

Polygon another location

Using google maps I have located 4 points and have created a polygon with them in this way insert into dummy_zip values (4,'prueba_directa','2016-04-13 ...
2
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1answer
26 views

Is there a way to avoid the re-calculation of the same centroid without creating a new column?

All tables contain polygon geometries. SELECT * FROM table1, table2, table3, table4 WHERE st_contains(table2.geom, st_centroid(table1.geom)) AND st_contains(table3.geom, ...
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0answers
16 views

Insert UTF-8 characters to CartoDB database

I'm using Cartodb.js and API to insert strings from jquery variables to my dataset table in Cartodb. //Store variable data.location = $('#location').val(); //Insert to SQL var SQL = 'INSERT INTO ...
3
votes
1answer
1k 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 ...
0
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1answer
482 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 ...
2
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1answer
2k 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 ...
0
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1answer
955 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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2answers
31 views

How to avoid manually typing coordinate information in CreateCircle function to select points in Mapinfo

I have a bunch of data points, each of them have a coordinate information (longitude, latitude). I am using CreateCircle( x, y, radius) function to select points within a distance to the chosen ...
0
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1answer
48 views

ogr2ogr - Clipping postgis and creating geojson

I'm trying to create a geojson file data based on data from my local postgis database using ogr2ogr. I'm trying to clip to a specific area and when I start to run the command, everything starts fine, ...
3
votes
1answer
1k views

calculate value using maximum value from different feature class

I'm trying to get the maximum numeric value from one feature class and use that value in an expression to calculate values of a different feature class. fc2.bldg_id = max(fc1.bldg_id)+1 Can this ...
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0answers
19 views

How to upload data from QGIS to a SQL Server?

I'm new at QGIS. I'm wondering if there's a native way or plugin to allow me to upload a shapefile into my SQL Server directly from QGIS. So far the only solution that I could find is the Shape2SQL ...
1
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0answers
19 views

Configure new SQL view doesn't appear for different DB's in the same PostGIS Database

I have PostGIS Database with different DB's. Each one of them has different workspace:store in Geoserver. When I'm opening Create new layer page and picking different workspace:store for some of them ...
0
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2answers
38 views

MapBasic - Updating blank rows in column with the value above

I am writing a MapBasic tool to correct some incorrect values in a set of tables. So far I have managed to pull out the values I need in a new column: What I need is to update any blank rows in the ...
1
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2answers
46 views

Conditional “On the Fly” Column with PostGIS

I have two tables I am working with; tl_2015_us_county which consists of county polygons, and tl_2015_48_puma10 which consists of PUMA polygons. I am currently using the below SQL in order to achieve ...
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1answer
255 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 = ...
4
votes
1answer
84 views

Using Not Equal to Wildcard in ArcMap Definition Query?

I'm attempting to use a definition query in order to display only a subset of data. I have a large CAD drawing that I have imported into my map. I do not need many of the lines from the .dwg file to ...
2
votes
1answer
382 views

How to make SQL definition query in ArcGIS to show only unique values (hide duplicates)?

I have a vector file with field of type LONG. Some values of this field are duplicates. Is it possible to make such SQL definition query in ArcGIS 10.3 to show only unique values without duplicates? ...
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0answers
49 views

Cursor help on large spatial query in PostgreSQL

I have two very large tables on which I want to perform a spatial query. UPDATE table_a SET att_1 = b.att_1, att_2 = b.att_2 FROM table_a AS a JOIN table_b AS b ON ...
4
votes
1answer
67 views

Selection by attribute string in ArcGIS 10 with wildcard as part of the name

I have an attribute field in my file geodatabase (GDB) where I'm trying to select all records that contain an underbar in the string field. The issue is that the underbar is considered a SQL wildcard ...