I need to be able to take the latitude and logitude of two locations and compare then to determine the number of miles between each point. It doesn't need to account for elevation, but assumes a flat plane with lat and long.
Does anyone have any algorithms in T-SQL to do this?
I've got a working query which returns all leads within a supplied proximity to a city. I followed a tutorial I googled a couple months ago (can't find it now). It works, but would love others to look the query over (provided DDL and sample data) and tell me if it's as it should be.
Two things I don't like about query:
1. I have to do a UNION to another query that retrieves everything that is in the same city in order to have complete results.
2. very slow to retrieve results (> 1 minute)
Sample DDL: 2 tables
create table dim_lead
(
date_created datetime,
[contact_first_name] varchar(20),
[contact_last_name] varchar(20),
lead_id int,
[Code] .....
I have been plugging away at this for a bit, and I am curious if there are any methods, functions, code, etc. to plug in latitude and longitude coordinates and get the name of a state as a result.
I have tried using the geography type and its "functions" to no avail.
not sure exactly where I should ask this question, but im looking fora database of Australian Postcodes that included thelongitude/latitude.Does anyone know of such a thing? Preferably free...fingers crossed.many thanksjack
View 1 Replies View RelatedI have a SQL 2012 SP1 environment integrated with SharePoint 2013. I have deployed a Multi-Dimensional Cube, due to the need for role playing dimensions and numerous parent-child hierarchies that can't be 'flattened' out easily, it's for this reason that we have gone multi-dimensional, rather than tabular.
The issue I now face is trying to plot the data on a map in Power View. It has to via Longitude and Latitude or easting and northing if possible. I know if I use PowerPivot, I can query the MD Cube, get my dataset and make sure the model views the lat/long as coordinates and this method works just fine - however, it involves an extra step, the end user must pre-build their query in PowerPivot before they can use the Power View maps and adhoc analysis, this can create a lot of back and forth when refining your query or performing additional 'what if' analysis.
When I create the Report Data Source in SharePoint to connect directly to the MD Cube, rather than going through Power Pivot, it's able to connect, but does not recognise the lat and long fields as Latitude and longitude, nor will it let me manually drag it into the lat and long fields on the field list. If I drag them into the 'location' section, it does not plot correctly.
How to get Power View to plot Latitude and Longitude from a Multi-Dimensional Source without having to go through PowerPivot?
I have two tables and they have a foreign key relationship. It will be a 1 to Many realationship.
Table1- the primary key table has the following columns
ContentID - int identity field
DateAdded- datetime
Table2 - The foreign key table, has the following relevant fields
FK - int foreign key
version - int
When an initial record is added there is a record added to each table. The ContentID in Table1 will match the FK field in Table2. Then a user will be able to "edit" the record in Table2, but instead of writing over the record that is already there, a new record will be added to Table2. I would like to calculate the version field where each time a record is added for the particular ContentID/FK it adds 1 to the last version that was added to that particular ContentID/FK.
Does that make sense. I am trying to implement some type of revision tracking for my CMS that I am building and this is the only way I can come up with because my client is worried that somebody will go in and make incorrect changes to their site and they want to be able to roll it back to a previous version.
I would appreciate any ideas.
Thanks,
laura
Hey all! First post-- I apologize for the newbness of the question, but I'm having an issue with a basic query... here goes:
I want to calculate the percentages of statuses found from two tables. Let say T1 is my list of statuses:
T1
Passed
Failed
Not Completed
and T2 is the table where I derive my total # of statues for each id and how many in each status.
T2
ID, Desc, Status , numtimesinstatus
1, Test1, Failed, 3
1, Test1, Passed, 1
3, Blah, Failed, 5
3, Blah, Not Completed, 1
What I'd like to do is get the percentages for each available status in T1, from T2-- I can do this; however, I'm having trouble in the cases where a particular ID hasn't been in one of the status (in other words, calculating a 0%). What I'd like to get from these two tables is:
Result
ID, Desc, Status, %age
1, Test1, Failed, 75.0
1, Test1, Passed, 25.0
1, Test1, Not Completed, 0.0
3, Blah, Failed, 83.3
3, Blah, Passed, 16.67
3, Blah, Not Completed, 0.0
Can anyone shed some light? Thanks!
I have created an SQL report that returns order data from a shop DB.
How can you get the output to total the number of order instances and the total value of those orders, both per user_id? Is this possible?
Does anyone know of a way to calculate the date 'x' number of business days after another date?
View 2 Replies View RelatedI have two tables that look like this (below). One tells me the name of my product, the Amazon Category it is in & the amount that I want to sell it for. The other tells me the Category & the fee for that category. So far so good. Though it gets tricky in the sense that some categories have two tiers. So in Electronics, the fee for $0.00 - $100.00 is 15%. But from $100 and up it is 8%.
Since it has two columns & both of the new columns pertain to the fee of my product, I can't figure out how to use both at once. For my $599.99 example it would be ($100 * 0.15) + ($499.99 * 0.08) = $55.00. Would I pivot the data? If not, how would I group it to be considered together?
Category Example
IDAmazonCategoryIDAmazonCategoryNameFeePercentageStartPriceEndPrice
1apsAllDepartments0.150.000.00
2instant-videoAmazonInstantVideo0.000.000.00
3appliancesAppliances0.150.000.00
Product Example
1Product1Electronics9.99
2Product3Electronics99.99
3Product2Electronics599.99
Raw SQL
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE #Amzn_Category_FeeStructure(
[ID] [int] IDENTITY(1,1) NOT NULL,
[Code] ....
I use Microsoft SQL 2008
Ok, so I've been struggling with the logic behind this one for a while, so I thought I'd ask you guys for some ideas :)
Basically, I have the following table structure
Employee(employee_number, continuous_start_date, ...)
The problem lies in working out a summary of service categories (0-6months, 7-12months, 13-24, 25+).
I can work out the length of service in months with the following code
SELECT DateDiff(mm, continuous_start_date, GetDate()) AS 'Service in months'
FROM employee
So the first stage is to summarise the length of service into groups as mentioned above.
Then the final stage is working out how many people are in each group!
Hope I have given enough information - and please do not post a full solution - just some hints on how to get the desired result ;)
Thanks later, and in advance :p
-GeorgeV
I need a Query for calculating the fiscal_week based on the input dates (start_date and end_date), though I got a query from this forum, it is not giving me exact result.
the sample is in the excel file with the attachment.
In the excel:
First tab tells you the raw_data what I am using to find the Fiscal_week
Second tab tell you the data where i found the mistake, and how I am expecting the output.
I also have attached the query I have got from this forum, query I have modified for fiscal week.
I am working with a data set containing several years' of monetary values. I have entries for past dates and the associated values, and I also have entries for future dates. I need to populate the values of the future date records with the values from the same date the previous year. Is there any way this can be done in Power Pivot?
View 6 Replies View RelatedHi
How do I get a nearest distance of a point? For example, I have two tables A and B and I want to find the nearest distance between the records of the two tables. In addition, one of the tables should also give me the distance. The data I have geo spatial data. Can this be done in SQL
Help will be appreciated
Is there a recommended practice for mirroring in regards to distance? Is it best practice to mirror with both nodes at the same physical location and use another method for failing over to a remote location or can one just put the other node in the mirror a few thousand miles away? I'm suspecting not.
Any comments??
Hi,
please, it is possible to know the edit distance used in the fuzzy lookup/grouping.
On this forum I read fuzzy lookup use 4-gram with fix size.
Does exist any document explaining how fuzzy lookup calculate the similarity? In other word, what kind of edit distance, algorithm is used by fuzzy lookup/grouping?
I hope I was enough clear with my poor english.
Thanks All
I'm trying to run a dyncamic query that returns all records within a specific distance of a certain point. The longitude and latitude of each record is stored in the database. The query is constructed from two dynamic variables $StartLatitude and $StartLongitude with represent the starting point.
SELECT UserID, ACOS(SIN($StartLatitude * PI() / 180) * SIN(Latitude * PI() / 180) + COS($StartLatitude * PI() / 180) * COS(Latitude * PI() / 180) * COS(($StartLongitude - Longitude) * PI() / 180)) * 180 / PI() * 60 * 1.1515 AS Distance
FROM HPN_Painters
HAVING (Distance <= 150)
It runs fine until I add the 'HAVING (Distance <= 150)' clause, in which I recieve the error: Invalid column name 'Distance' It seems that Distance cannot be referenced in the HAVING clause.
I'm looking to find out how I'd go about setting up a database where avisitor to my site could punch in their postal code, and find out how farthey are from another postal code. For example, AutoTrader has this featureI believe to tell you how far the vehicle is from you. Dating sites havethem so you can do proximity searches.Anyone have any ideas where I could start? I'm thinking the post office,but if anyone else has suggestions, I'm open to hear them.Thanks!
View 4 Replies View RelatedVarious posts have noted that mirroring over distance is not advisable or that either async connections should be used.
Are there any limits/recommendations i.e. if two datacenters are a couple of files part with 10GBs fibre links and <50ms response times would this be acceptable for high-availability mirroring?
I am new to data mining so please excuse my ignorance. Lets assume
- i have created a cluser model
- identified 3 clusters ( a, b, c)
- each record consists of 15 columns
- collecting new records( 15 variables) real time
what i would like to do is plot these new records programmatically as i collect them realtime. I assume this new record will belong to one of these three clusters. I believe we can find the cluster this new record belongs to by ' SELECT Cluster()....' and distance from the center of the cluster by ClusterDistance(). To plot this on a 2-dimentional space i need (x, y).
ClusterDistance() could be Y but what will be X.
thanks.
I have a user defined function, I want to determine the distance between the 2 points. I have it working but i'm having a problem getting to print.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Code Snippetcreate function dbo.Distance( @lat1 float , @long1 float , @lat2 float , @long2 float)
returns float
as
begin
declare @DegToRad as float
declare @Ans as float
declare @Miles as float
set @DegToRad = 57.29577951
set @Ans = 0
set @Miles = 0
if @lat1 is null or @lat1 = 0 or @long1 is null or @long1 = 0 or @lat2 is
null or @lat2 = 0 or @long2 is null or @long2 = 0
begin
return ( @Miles )
end
set @Ans = SIN(@lat1 / @DegToRad) * SIN(@lat2 / @DegToRad) + COS(@lat1 / @DegToRad ) * COS( @lat2 / @DegToRad ) * COS(ABS(@long2 - @long1 )/@DegToRad)
set @Miles = 3959 * ATAN(SQRT(1 - SQUARE(@Ans)) / @Ans)
set @Miles = CEILING(@Miles)
return ( @Miles )
end
DECLARE @RC float
EXEC Distance '39.943762', '-78.122265', '32.334709', '-96.633546'
PRINT @RC /* in miles */
Great Circle distance calculation
Is there any stored procedure or application that implements Great Circle distance calculation
DECLARE @Latitude NUMERIC(9, 6), @Longitude NUMERIC(9, 6)
DECLARE @MyLatitude NUMERIC(9, 6), @MyLongitude NUMERIC(9, 6)
Set @Latitude = 42.329596;
Set @Longitude = -83.709286;
Set @MyLatitude = 42.430883;
Set @MyLongitude = -82.923642;
Question: How do we calculate the distance in miles between the 2 points.
I am trying to write a piece of SQL which gives me a list of enquiries within 10 metre distance of a enquiry.
The idea is to identify possible duplicates.
Table: enquiry
Primary key: enquiry_number
Co-ordinates data fields: enquiry.enquiry_easting and enquiry.enquiry_northing.
I will need to self-search on the same table to find possible enquiries within 10m distance.
See here www.merriampark.com/ld.htm for information about the algorithm. This page has a link (http://www.merriampark.com/ldtsql.htm) to a T-SQL implementation by Joseph Gama: unfortunately, that function doesn't work. There is a debugged version in the also-referenced package of TSQL functions (http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=502&lngWId=5), but this still has the fundamental problem that it only works on pairs of strings up to 49 characters.
CREATE FUNCTION edit_distance(@s1 nvarchar(3999), @s2 nvarchar(3999))
RETURNS int
AS
BEGIN
DECLARE @s1_len int, @s2_len int, @i int, @j int, @s1_char nchar, @c int, @c_temp int,
@cv0 varbinary(8000), @cv1 varbinary(8000)
SELECT @s1_len = LEN(@s1), @s2_len = LEN(@s2), @cv1 = 0x0000, @j = 1, @i = 1, @c = 0
WHILE @j <= @s2_len
SELECT @cv1 = @cv1 + CAST(@j AS binary(2)), @j = @j + 1
WHILE @i <= @s1_len
BEGIN
SELECT @s1_char = SUBSTRING(@s1, @i, 1), @c = @i, @cv0 = CAST(@i AS binary(2)), @j = 1
WHILE @j <= @s2_len
BEGIN
SET @c = @c + 1
SET @c_temp = CAST(SUBSTRING(@cv1, @j+@j-1, 2) AS int) +
CASE WHEN @s1_char = SUBSTRING(@s2, @j, 1) THEN 0 ELSE 1 END
IF @c > @c_temp SET @c = @c_temp
SET @c_temp = CAST(SUBSTRING(@cv1, @j+@j+1, 2) AS int)+1
IF @c > @c_temp SET @c = @c_temp
SELECT @cv0 = @cv0 + CAST(@c AS binary(2)), @j = @j + 1
END
SELECT @cv1 = @cv0, @i = @i + 1
END
RETURN @c
END
I am trying to use the haversine function to find the distance betweentwo points on a sphere, specifically two zip codes in my database. I'mneither horribly familiar with SQL syntax nor math equations :), so Iwas hoping I could get some help. Below is what I'm using and it is,as best as I can figure, the correct formula. It is not however,giving me correct results. Some are close, others don't seem right atall. Any ideas?SET @lat1 = RADIANS(@lat1)SET @log1 = RADIANS(@log1)SET @lat2 = RADIANS(@lat2)SET @log2 = RADIANS(@log2)SET @Dlat = ABS(@lat2 - @lat1)SET @Dlog = ABS(@log2 - @log1)SET @R = 3956 /*Approximate radius of earth in miles*/SET @A = SQUARE(SIN(@Dlat/2)) + COS(@lat1) * COS(@lat2) *SQUARE(SIN(@Dlog/2))SET @C = 2 * ATN2(SQRT(@A), SQRT(1 - @A))/*SET @C = 2 * ASIN(min(SQRT(@A))) Alternative calculation*/SET @distance = @R * @Cthnx,cjrsumner
View 7 Replies View Related
Great Circle distance calculation
Is there any stored procedure or application that implements Great Circle distance calculation
hi everyone:
the report show two tables two matrixs
how can i control the distance between them
I want to set the same distance between the table and matrix
or (table and table )
Could I implement a failover cluster solution on the two DBs which are based in two different cities?
Possible?
Given the following example;
declare @CustIfno table (AccountNumber int, StoreID int, Distance decimal(14,10))
insert into @CustIfno values ('1','44','2.145223'),('1','45','4.567834'),
('1','46','8.4325654'),('2','44','7.8754345'),('2','45','1.54654323'),
('2','46','11.5436543'), ('3','44','9.145223'),('3','45','8.567834'),
('3','46','17.4325654'),('4','44','7.8754345'),('4','45','1.54654323'),
('4','46','11.5436543')
How can I show the shortest Distance by AccountID and StoreID. Results would look like this;
AccountNumberStoreID Distance
1 44 2.1452230000
2 45 1.5465432300
3 45 8.5678340000
4 45 1.5465432300
This function computes the great circle distance in Kilometers using the Haversine formula distance calculation.
If you want it in miles, change the average radius of Earth to miles in the function.
create function dbo.F_GREAT_CIRCLE_DISTANCE
(
@Latitude1 float,
@Longitude1 float,
@Latitude2 float,
@Longitude2 float
)
returns float
as
/*
fUNCTION: F_GREAT_CIRCLE_DISTANCE
Computes the Great Circle distance in kilometers
between two points on the Earth using the
Haversine formula distance calculation.
Input Parameters:
@Longitude1 - Longitude in degrees of point 1
@Latitude1 - Latitude in degrees of point 1
@Longitude2 - Longitude in degrees of point 2
@Latitude2 - Latitude in degrees of point 2
*/
begin
declare @radius float
declare @lon1 float
declare @lon2 float
declare @lat1 float
declare @lat2 float
declare @a float
declare @distance float
-- Sets average radius of Earth in Kilometers
set @radius = 6371.0E
-- Convert degrees to radians
set @lon1 = radians( @Longitude1 )
set @lon2 = radians( @Longitude2 )
set @lat1 = radians( @Latitude1 )
set @lat2 = radians( @Latitude2 )
set @a = sqrt(square(sin((@lat2-@lat1)/2.0E)) +
(cos(@lat1) * cos(@lat2) * square(sin((@lon2-@lon1)/2.0E))) )
set @distance =
@radius * ( 2.0E *asin(case when 1.0E < @a then 1.0E else @a end ))
return @distance
end
Edit: corrected spelling
CODO ERGO SUM
Hi All,
Does anyone have a Stored Procedure that works perfectly to retrieve all zipcodes within a specified zipcode and distance radius - a zipcode and radius is passed and the Store Procedure result shows all zipcodes that falls within that range.
Thanks in advance
Ade
I have the two following locations.
They're both towns in Australia , State of Victoria
Fitzroy,-37.798701, 144.978687
Footscray,-37.799736, 144.899734
After running geography::Point(Latitude, Longitude , 4326) on the latitude and longitude provided for each location, my Geography column for each row is populated with the following:
Fitzroy, 0xE6100000010C292499D53BE642C0A7406667511F6240
Footscray, 0xE6100000010C89B7CEBF5DE642C02D23F59ECA1C6240
In my SQL Query, I have the following which works out the distance between both towns. Geo being my Geography column
DECLARE @s geography = 0xE6100000010C292499D53BE642C0A7406667511F6240 -- Fitzroy
DECLARE @t geography = 0xE6100000010C89B7CEBF5DE642C02D23F59ECA1C6240 -- Footscray
SELECT @s.STDistance(@t)
The result I get is
6954.44911927616
I then looked at formatting this as in Australia we go by KM so after some searching I found two solutions one for Miles and the other KM
So I changed Select statement to look like this
select @s.STDistance(@t)/1000 -- format to KM
My result is then
6.95444911927616
When I go to google maps and do a direction request between the locations provided above it says 10.2km (depending on traffic)
Now I'm new to this spatial data within SQL, why would I get a different result from google maps?
Also I would like to round this number so its easier to use within my where statement so I'm using Ceiling as shown here:
SELECT CEILING(@s.STDistance(@t)/1000)
Is ceiling the correct way to go?
Reason I need to round this is because we are allowing the end user to search by radius so if they pass in 50km I will then say
Where CEILING(@s.STDistance(@t)/1000) < 50