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

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1answer
950 views

MapInfo equivalent of SQL 'AS' statement

I'm trying to execute a SQL query in MapInfo, and want to change some of the column names to something more readable. The SQL command 'AS' doesn't seem to work - is there a MapInfo equivalent?
2
votes
1answer
925 views

How to extract data from a POINT column in PostGIS using JAVA (jdbc)

How do you get a value from a column which has a point data type. I've just switched over from MySQL to PostGIS. I have a column which is called point and is of type Point. I want to get that value ...
3
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2answers
2k views

Reading Coded Domains from ArcSDE 10 RDBMS using SQL/ADO.net

I need to read ArcGIS Domain Coded Value pairs (value/description) from SQL Server / Oracle in SQL (i.e. not using ArcObjects). This is an XML field. I can get the domain definition thus select ...
6
votes
1answer
981 views

Editing tables using SQL in ArcMap

We've recently started working with ArcMap, having used MapInfo previously. I've created a shapefile in ArcCatalog and want to update some columns using SQL. In MapInfo I'd write the following command ...
2
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2answers
786 views

ArcObjects: Alternative workflow to using a SQL query with over 1000 values in IN statement

I have a ListBox listing the unique values of a column in a feature class; the user can select any number of values and click a button to then zoom to the set of features matching those values. A ...
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2answers
846 views

Using a bounding polygon, instead of a bounding box

I've got a large set of LAT/LON coordinates. Up until now, when I needed to select out those that fell within a certain region, I'd just create a bounding box using some MINx, MAXx, MINy, MAXy values ...
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0answers
216 views

Color polygons using SQL Database based Rules in Openlayers

I want the rules to be applied according to values in a database. Is it possible to include external database information that is not in the shapefile? In spoken words the original rule is "Color all ...
2
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1answer
704 views

Convert SqlGeometry data from SQL directly to Tiles / PNG file

I would like to know a basic method for 'exporting' SqlGeometry data from SQL Server 2008 to a Tile Server / PNG File generator. I already have a Silverlight Map application which uses a Custom Tile ...
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2answers
392 views

Selecting POIs around specific buildings using PostGIS

The problem: I need to select, for each residential building in my table that has say at least 2 pharmacies and 2 education centers within a radius of 1km, all POIs (pharmacies, comercial centres, ...
4
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1answer
343 views

Sort by geometry using INHERITS?

hope everyone's doing well. I have a statewide point data set (parent table: 600K rows, 500 columns) I need to analyze at multiple scales based on several different spatial divisions. I'll also need ...
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3answers
6k views

Defining a Query with Multiple Values

I have been trying by best to create a definition query which would select a group of municipalities from among the many in my state. I have tried commands of all sorts of variations from ...
2
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3answers
682 views

Definition Query to Python script on Oracle 9i and ArcGIS 9.3.1

SUBTYPECD=1 AND SERIESNAME NOT LIKE '%-%' AND OPERATIONALSTATUS IS NULL OR SUBTYPECD=1 AND SERIESNAME NOT LIKE '%-%' AND OPERATIONALSTATUS = 976 The above is my def query in ArcMap against ArcSDE ...
7
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1answer
376 views

Assign Z value to start & end of PostGIS line

I have a line table in my PostGIS database and a table with invert levels for the start and end of each line. My goal is to create create 3D lines in my table, from my invert data. I know I can use ...
6
votes
1answer
948 views

Spatial joins in OGR SQL

I have seen that OGR supports it's own form of SQL, I was wondering if it's possible to do spatial joins. Something like select all objects where one intersects the other. I did have a look around ...
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3answers
1k views

How to interpolate GPS Positions in PostGIS

I have a PostGIS table of GPS positions for every five seconds: 2011-01-01 00:00:05, POINT(x1,y1) 2011-01-01 00:00:10, POINT(x2,y2) 2011-01-01 00:00:15, POINT(x3,y3) ... I'm looking for a query ...
7
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3answers
3k views

Label points at regular intervals using ArcGIS for Desktop?

I'm working with lines on roads represented by a large number of sequencial points. Since labeling all of them would make the points impossible to identify, I'd like to know if there is a way to label ...
4
votes
1answer
645 views

Error using ST_AddPoint for adding a new point to a polyline in PostGIS

I have two PostGIS tables, one where I store points, named "nodes" and another with where I store multilinestrings, named "lines". I'm trying to append a new vertex to a line using one of the nodes ...
3
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2answers
293 views

SQL statements on a Geodatabase

I have converted a shapefile into a geodatabase which I use for geocoding via the ILocator interface. It has the extension (.mdb) and contains address fields with a point which is stored as a long ...
10
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2answers
7k views

Creating spatial tables with PostGIS

In the PostGIS documentation it says that there are two steps to creating a spatial table with SQL: Create a normal non-spatial table. Add a spatial column to the table using the OpenGIS ...
5
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2answers
255 views

ArcSDE recently modified geometries

ArcSDE 10 with a MS SQL 2005 backend. I am trying to see the most recently modified geometries using SQL so that I can use it to update another GIS database running PostGIS. Has anyone tried this ...
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4answers
3k views

ST_Intersection slow query

I am trying to perform an intersection between two layers: Polyline layer representing some roads (~5500 rows) Polygon layer representing irregularly shaped buffers around various points of interest ...
9
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3answers
2k views

Beginner PostGIS question: getting geometry from multiple tables

I am very new to PostGIS, PostgreSQL, and SQL in general. I have 44 tables in my PostGIS database, and each one represents a different layer of vector data. Each was loaded from a separate shapefile, ...
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4answers
2k views

To what extent is SQL's language accessible via ArcGIS tools?

That question just sounds so redundant... At any rate, I have been asked to explore the uses of SQL in ArcGIS. We use an SDE DB for all server-side storage and DB managing/large-scale editing. ...
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5answers
5k views

A SQL console in QGIS

I know QGIS comes with its field calculator, which is not bad. It also comes with ftools which permits several operations on geometry and attributes. But we often need more control and I haven't seen ...
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0answers
184 views

VB Script for selecting multiple records [duplicate]

Possible Duplicate: “If then” VB Script code (or Python) equivalent to SQL's IN ('x','y',z') expression in ArcGIS Field Calculator question? going to ask ...
5
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1answer
703 views

Spatialite SpatialSQL Query

I've been flummoxed by this query. I have a table of points, and a table of lines, and I am trying to return the point id and line id whenever the point is contained within a buffer of the line (i.e. ...
7
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2answers
3k views

SELECT TOP query in ArcGIS Desktop?

Is there a way to use a SELECT TOP (n) within ArcGIS desktop? Is appears that since the ArcGIS query builder is effectively building the SQL statement after the WHERE clause, that this may not be ...
5
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2answers
1k views

Using an integer variable in where-clause in arcgis python script

I've seen some questions on this, but there seem to be many different answers... and none have seemed to work. I'm trying to include an integer variable in the SQL where-clause of a tool like this ...
3
votes
3answers
996 views

How to label features in QGIS using SQL statement?

In QGIS, I can't seem to find a way to define the features that I want to label using a SQL query? Is this possible? For example, I downloaded the OSM Natural shapefiles, and a lot of those features ...
1
vote
1answer
832 views

Labeling classes for small roads on large extent maps in ArcMap with SQL statement?

I have many small sub divisions that won't label nice, (lot of overlapping) unreadable. While using the bullet leader symbol. What would be the best statement that would place the labels in a ...
3
votes
4answers
4k views

Select by attributes - records with the largest attribute value

Using 'Select By Attributes' how can I select records from a shapefile database table where a numeric field contains the largest value. Need to use MAX function or something like that but can't get ...
7
votes
1answer
10k views

How to use Select by Attributes query with semicolons?

I am trying to select multiple (50 or more) unique numeric records using ArcGIS 10's "Select by Attributes" using semicolons ';' after each record which it verifies as good to go. Please see screen ...
3
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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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5answers
3k 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 ...
4
votes
3answers
1k views

How to automatically create 2D-point features from addresses in an SQL database

I currently have an SQL-Table which contains our buildings. I already added the table and now want to create features ( 2D-Points ) from that information. The biggest problem I have is that the ...
5
votes
1answer
301 views

Postgres/postgis cursors

I have a road network with StreetName and min/max address ranges for each segment (ie- StreetName = 'Main St', Min = 100, Max = 199). I also have individual address points with similar information ...
3
votes
2answers
572 views

Is there a way to update the attribute table of a feature class with a query?

I have a layer with multi-polygon feature classes for states and provinces. The shape area for some features classes is < 0 causing the label to be position in odd locations. It seems that the ...
5
votes
2answers
8k views

'Select by attribute' using python in ArcMap 10

I need to select a feature using SQL before zooming to it in python. What I'm looking for are replacements for the commented lines in this code: import arcpy parcel_num = "123456" mxd = ...
4
votes
1answer
456 views

Geodjango insert statement: psycopg2.IntegrityError: violates check constraint

Why is the following INSERT statement throwing this error? INSERT INTO domes_place (placeid, structidx, oscode) VALUES ('10', '1', 'POINT(51.121282945772 1.3138398501222)'); psycopg2.IntegrityError: ...
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2answers
1k views

Error adding data to Geodjango database: parse error… within geometry

I'm trying to insert some values into a Geodjango database, but getting errors. This is the table: class Place(models.Model): placeid = models.IntegerField(primary_key=True) structidx = ...
8
votes
2answers
691 views

Splitting polylines using regions with PostGIS

I was wondering if it is possible to split a polyline on polygon boundaries (regions) in PostGIS, the picture below is of what we have at the moment and showing where I need the polylines split: ...
8
votes
4answers
1k views

Queries returning very big datasets in PostGIS

I have a PostGIS query that will return several million rows: SELECT t1.id AS id1, t2.id AS id2, ABS(t1.mean_h - t2.mean_h) AS h_diff, ST_Distance(t1.the_geom, t2.the_geom) AS dist FROM ...
7
votes
1answer
416 views

Is it possible to define a No SQL model for spatial data? [duplicate]

Possible Duplicate: Is there any way I can use a Key-Value store for geospatial data? I read somewhere about No SQL being a solution for large databases management, the kind that google ...
8
votes
3answers
823 views

Are there any training resources in SQL and Python as applied to GIS database management?

I've taken ESRI database courses, which have been helpful to my work. But I also need training in SQL and Python as applied to GIS database management. Any suggestions?
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vote
2answers
536 views

ArcObjects table views or sqlite3 in Python?

Given a larger csv (1000+ points) with attributes, I need to do both attrbute and spatial queries on the data. Would it be faster to read the points into an xy feature class, and do the spatial and ...
25
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9answers
14k views

How to connect to PostGIS database from ArcMap?

How can I connect to a PostGIS database from ArcMap? Solutions for ArcGIS 9.3, 10.0 and later are acceptable. Ideally, I would like to be able to perform spatially enabled queries and receive the ...