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

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135 views

connecting cartodb to existing mysql database

I'm trying to create a simple heat map based on longitudinal and latitudinal map coordinates that can be transferred from a database on mysql that I've created. I read that cartodb can be connected to ...
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1answer
72 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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1answer
175 views

Postgis create polygon extent/convex hull from spatial table

Please help, I have a polygon layer representing building footprints. I want to create new view in postgis that will contain rectangle representing bounding box and also another view that will have ...
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16 views

Uisng Directed force graphic to connect terminals in CartoDB?

I am starting using SQL for my internship, we are creating a map for terminals (points representating a port, train station or logistic centre) and what I would like to do is use the Directed force ...
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1answer
56 views

Arcpad 10…using sql with VBScript

I am trying to get a count of related records (Tableform) in order to validate Editform entry (using VBS). Any help getting myCount? I Know there are some syntax issues here, but is this even ...
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2answers
148 views

STCentroid Question

Hi I'm not sure if I should ask in here or another SE site, however I was wondering if anyone knew if it is possible to configure the results from a STCentroid select statement? If I run a select ...
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1answer
474 views

Query to select MIN and MAX values by groups

In ArcMap 10 i'm working in a Personal Geodatabase where the points (see screenshot below) represent the number of each house in the street. Each point has an ObjectID. This ObjectID is an unique ...
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1answer
256 views

SQL-query should return GeoJSON FeatureCollection

I'm trying to return a GeoJSON FeatureCollection object from a SQL-query with PostgreSQL 9.3 and PostGIS 2.1. This is my query so far: SELECT row_to_json(fc) AS p FROM (SELECT 'FeatureCollection' ...
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1answer
364 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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1answer
748 views

PostgreSQL/PostGIS: create spatial view

I have a polygon layer and a point layer. 1) I wrote a spatial query to count how many points fall in each polygon: SELECT polR.codeR, count(pntAZ.geom) as tot_pntAZ FROM boundaryR as polR LEFT ...
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299 views

How to connect to ArcSDE for using the ArcObjects Erase tool in C#?

I want to make use of geoprocessing via .NET ArcObjects, in this case of the "Erase" tool. This is easy once dealing with a local gdb file what I did for feasibility study. The issue occurs when I ...
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2answers
242 views

Finding Polygons which do not touch any other polygon in a single oracle database table

I currently have an oracle table of approximately 100,000 records - all of which are polygons. I want to find all the polygons which do not touch any other polygon within the same table. There are a ...
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1answer
169 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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1answer
38 views

I need to test a condition within the sql in postgis.

I need to test a condition within the sql in postgis. My sql: SELECT (zoneamento3_32722.zt3), logradouros32722."NMIDEABR", logradouros32722."OBJECTID", ...
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2answers
190 views

How to join data in postgis tables to form layer with subset of attributes

In QGIS I am trying to join data from two postgis tables. I can not figure out how to do this at sql because add layer tools seem to allow one to select just one table to filter on. Instead I ...
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3answers
618 views

SQL expression error for Select Layer By Attribute

arcpy.MakeFeatureLayer_management("N05-12_Station2_JGD.shp","station_12") year=2012 arcpy.SelectLayerByAttribute_management("station_12","#",'"closing">=%d AND "opening"<=%d' % year) ...
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1answer
45 views

managing postgresql database table using the pgadminIII sql tool

i have created a database using postgresql 9.1 and a table containing parcel information for a town council database on a windows 7 OS. i created the geometry column using the SELECT ...
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1answer
132 views

SQL Make Table (from .mdb) to Point Shapefile

For my school assignment, I must compose an SQL statement which retrieves data from a database in .mdb format. I have no problem developing the SQL statement. It is a requirement that we have an ...
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2answers
253 views

Help needed with incorporating SQL query into ArcGIS python script

I'm new to python and have been trying to learn how to use it within ArcGIS. I have primarily been using the free Penn State courseware available here - http://open.ems.psu.edu/courseware I have ...
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1answer
108 views

MYSQL 5.6 Cluster / chain points by distance to any other point without millions of calculations?

I have a table of approx 10,000 - 20,000 dynamic points across the globe stored as lon/lat points. I want to cluster any point within (roughly) 3km of any other point into one point (and return the ...
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1answer
514 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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53 views

Postgresql (soln would be basic SQL I think): ORDER by distance to a point and return those distances in array pairs w/ the full records

so I know there have been some questions asked about how to calculate distance using postgis and how to order results by their distance from a respective point. I'm not very talented at SQL (at all) ...
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3answers
228 views

AVG and GROUP BY in ArcMap

I have a Road Network shp file.(attributes include Names and Volumes ) Each road in my network consists of many links with the same name and different volumes. I want to display Road Names and ...
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1answer
65 views

PGrouting encapsulated queries error [quotes problem]

I'm facing a quote problem on a pgrouting query. What I'm thinking is wrong is that my query only works if I use one, then four, then eight quotes on encapsulated queries. Is there a way to simplify ...
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2answers
191 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
263 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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1answer
93 views

Counting event points by categories and matching to polygons, normalized by population

I'm new to CartoDB, but I'm a seasoned user of ArcGIS. My university was sorely lacking in GIS training; I only learned how to create static maps, not web content. After graduating 3 years ago, I'm ...
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2answers
506 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 ...
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1answer
422 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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0answers
43 views

How to determine distances of points from closest line? (Mapinfo or QGIS) [duplicate]

I have a set of points and a set of lines. I'd like to know distances of the points from the closest line... answering the question "how many points are within 500m to 1000m of one of the lines, how ...
2
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1answer
141 views

Get list of all tables in CartoDB account with SQL statement?

How can I get a list of all available tables in my own authenticated CartoDB account with a SQL statement? This returns null: SELECT table_name as t FROM information_schema.tables WHERE table_schema ...
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2answers
2k views

How to get the data type of each column from a postgis table

I need to get the column data types of all columns in a table, including the geometry types. What I wanted to know is if there is a function or SQL that gives something like this: column_name | ...
5
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1answer
551 views

How to use %value% (from For iterator) in SQL expression of Calculate Field in ModelBuilder?

I have a shapefile with data of fish specimens and the coordinates where they were tagged for research purposes. One of the fields in the attribute table of these shapefiles is the fish length in ...
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1answer
82 views

How to Label Field With Multiple Selected Values?

I have a shape named "Subdistrict" and it shown on Attribut Table like this : No | subd | village 1 | town1 | v1 2 | town1 | v2 3 | town1 | v3 4 | town2 | v4 5 | town2 | v5 6 | town2 | ...
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1answer
58 views

Choropleth map turns one color when filtered, sql error

My data is generating a choropleth map perfectly but when I try to filter (both in the filter tab and by writing my own SQL) it turns all one color and tells me I have an SQL error. This happens even ...
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2answers
2k views

QGIS Select by Expression

A basic QGIS 2.2.0-Valmiera, Select By Expression - Field Calculator question. Introduction I am a geologist searching through a geological database (see attached figure). I have a shape file and ...
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1answer
56 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 ...
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1answer
45 views

How do I show the created_at column at my infowindow?

Fields like created_at, updated_at or cartodb_id are a greyed out thus not allowing us to add it to the info window. Is there a way to extract the data from default fields in cartodb?
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144 views

New line in MapInfo SQL Select

Is there a character I need to use to state a new line in the MapInfo SQL Select box (e.g like ; in SQL Management Studio) or is this not possible. The highlighted (yellow) area is where the new line ...
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0answers
97 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 ...
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1answer
46 views

why is the CDB_QuantileBins function not found in cartoDB?

What is wrong with the following SQL query on my data? I found pretty clear documentation (1,2) that the function is supposed to work. SELECT CDB_QuantileBins(array_agg(numeric_column_of_mine), 10) ...
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1answer
80 views

how to run a PostgreSQL query on CartoDB tables?

I want to run a VACUUM FULL on my table, but I don't think it's working. Simply sandorl.cartodb.com/api/v2/sql?q=VACUUM&api_key={MYKEY} results in long output, apparently only repeating for ...
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1answer
69 views

CartoDB simple process

I'm attempting to create a simple process with CartoDB, I have a layer with number of polygons, I want to to run a SQL with a multipoint line to report which polygons were intersected.
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2answers
311 views

How to select objects by N:M join?

I have a layer with some geometries and a data layer that defines an M:N relation. Is there any way I could select (on the map) objects that are in relation with specific id? Basically I would like to ...
0
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1answer
26 views

whereClause syntax for Cost Distance parameter

I am looking to create a sql expression regarding point feature class and selection based on 'Name' field to pass to arcpy.sa.CostDistance() param[0]. similat to: savepath = env.workspace = ...
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1answer
102 views

How to create SQL statement to only return chainage values every 500m?

I have a list of chainage values every 100m (as a whole number) and I am trying to create an SQL statement to only return values every 500m. Any ideas? Using ArcGIS 10.1
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1answer
116 views

Conditional SQL Query

I've been running a code that searches a desired field in a feature class and performs an specified SQL query based on whether the field is string or double. The variables are just temporary fillers ...
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1answer
96 views

SQL within Python Script to get only part of the expression by GetParameterAsText

I was wondering if anybody could help me. Im trying to create a tool within ArcMap using a python script. Within the script i've been trying figure out how to change it so that I only need to get ...
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179 views

PyQGIS Dialog Plugin not resetting

I have written a PostGIS search plugin that works pretty well, except two things that I just cannot figure out a solution 1) When the dialog closes and then is reopened the previous query is still in ...
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0answers
43 views

Is it possible to retrieve lost versioned data in SQL Server Management Studio?

One of my staff accidentally deleted a feature class she was creating in her version before I reconciled it. I have grabbed a back up of the database from yesterday in SQL Management Studio. Is ...