T-SQL (SS2K8) :: Returning Rows Within Certain Distance In Miles From City Using Longitude And Latitude
Nov 19, 2014
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)
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 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
I 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?
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:
tblPerson - holds basic person data. tblPersonHistorical - holds a dated snapshot of the fkPersonId, fkInstitutionId, and fkDepartmentId tblWebUsers - holds login data specific to a web account, but not every person will have a web account
I want to allow my admins to search for users (persons) with web accounts. They need to be able to search by tblPerson.FirstName, tblPerson.LastName, tblInstitutions.Institution, and tblDepartments.Department. The only way a Person record is joined an Institution or Department record is through many -> many junction table tblPersonHistorical.
People place orders and make decisions in our system. Because people can change institutions and departments, we need an historical snapshot of where they worked at the time they placed an order or made a decision. Of course that means some folks will have multiple historical records. That all works fine.
So when an admin user wants to search for webusers, I only want to return data, if possible, from he most recent/current historical records. This is where I am getting bogged down. When I search for a specific webuser I simply do a TOP 1 and ORDER BY DateCreated DESC. That returns only the current historical record for that person/webuser.
But what if I want to return many different webusers, and only want the TOP 1 historical for each returned?
Straight TOP by itself won't do it. GROUP BY by itself won't do it.
I need to build a query that can return only documents where the field "u_DIM4" for the same document have more than one different value..my script are this one just to having an example:
Select docnome [documentname], adoc [docnr], count(*) [countAlldifferentbyDoc], u_dim4 from fn where u_dim4 <> '' and data between '2015-01-01' and '2015-07-31' AND adoc = '02634' Group by docnome,adoc,u_dim4 ORDER BY 2 asc
;WITH ctePreAgg AS ( select top 500 act_reference "ActivityRef", row_number() over (partition by act_reference order by act_reference) as rowno, t3.s_initials "Initials" from mytablestuff order by act_reference
[code]...
But what I would love to do next is take each of the above rows - and return the initials either in one column with all the nulls and duplicate values removed, separated by a comma ..
OR the above but using variable number of columns based on the maximum number of different initials for each row.this is not strictly required, but maybe neater for further work on the view
I have a UDF with a select * that works fine in one region (DEV) but not another (QC). It's not returning the last 2 columns from the table in QC.I looked at the UDF and it does a fairly simple select:
select a.* from myTable A
The table is the same in both regions and I did a sp_help on the table to ensure these 2 columns are listed. They are. Also, executing a select * in a query windows does return the final 2 columns from the table in QC. The issue resides in the QC version of the UDF only.
The UDF has already been updated to retrieve all columns by name but I'm curious why this would happen. For some reason I'd just like to know and in case it happens again.
Firstly may I say that the sproc I am having problems with and the service that calls it is inherited technical debt from an unsupervised contractor. We are not able to go through a rewriting process at the moment so need to live with this if possible.
Background
We have a service written in c# that is processing packages of xml that contain up to 100 elements of goods consignment data. In amongst that element is an identifier for each consignment. This is nvarchar(22) in our table. I have not observed any IDs that are different in length in the XML element.
The service picks up these packages from MSMQ, extracts the data using XPATH and passes the ID into the SPROC in question. This searches for the ID in one of our tables and returns a bool to the service indicating whether it was found or not. If found then we add a new row to another table. If not found then it ignores and continues processing.
Observations
The service seems to be dealing with a top end of around 10 messages a minute... so a max of about 1000 calls to the SPROC per minute. Multi-threading has been used to process these packages but as I am assured, sprocs are threadsafe. It is completing the calls without issue but intermittently it will return FALSE. For these IDs I am observing that they exist on the table mostly (there are the odd exceptions where they are legitimately missing). e.g Yesterday I was watching the logs and on seeing a message saying that an ID had not been found I checked the database and could see that the ID had been entered a day earlier according to an Entered Timestamp.
So the Sproc...
USE [xxxxxxxxxx] GO
SET ANSI_NULLS ON GO
SET QUOTED_IDENTIFIER ON GO
[Code]....
So on occasions (about 0.33% of the time) it is failing to get a bit 1 setting in @bFound after the SELECT TOP(1).
The only suggestions I can make have been...
change @pIdentifier nvarchar(25) to nvarchar(22) Trim any potential blanks from either side of both parts of the identifier comparison Change the SELECT TOP(1) to an EXISTS
The only other thought is the two way parameter direction in the C# for the result OUTPUT. Not sure why he did it that way or what the purpose is.
I have been unable to replicate this using a test app and our test databases. Has observed selects failing to find even though the data is there, like this before?
I am using MSSQL Server 2008R2 and I am interested in returning rows from a 'financial' table that fall within the current year (each row contains a 'Entered Date'). I am located in Australia so my financial year consists of all entries between the date 01/07/xx to the 30/06/yy.
Perhaps using the datediff() function, or other functions as required to achieve what I need?
JobRequirements (A) JobID int QualificationTypeID int
EmployeeQualifications (B) EmployeeID int QualificationTypeID int
Employee (C) EmployeeID int EmployeeName int
I need to return a list of all employees fit for a specific job ... The criteria is that only employees who have all the JobRequirements are returned. So if a job had 3 requirements and the employee had just 2 of those qualifications, they would not be returned. Likewise, the employee might have more qualifications than the job requires, but unless the employee has all the specific qualifications the job requires they are not included. If an employee has all the job qualifications plus they have extra qualifications then they should be returned...
How to only return those records where all the child records are present in the other table..
I need to run a select statement that only returns 50 rows. How do I limit the amount of rows returned? Normally the query will return hundreds of rows but all I need is the first 50 it retrieves. I have looked in the BOL and can only find help with a block cursor not just a query.
Is there a way to create a query that will return only 1 row within a join for example:
select a,b,c,d from tbl1 inner join tbl2 on top 1 tbl2.a = tbl1.a <-- return only the top record here...
I dont have too much of a problem with joins... however I was wondering if there was a mechanism to just specify what would be the top most record from a join clause.
I have a query set up that returns the data that I would like, but Iwould only like the latest data for each vehicle number. The query Ihave set up isSELECT TOP 100 PERCENT dbo.vwEvents.EventName,dbo.luSessionAll.SessionName, dbo.luOuting.OutingNumber,dbo.luVehicle.VehicleName, dbo.luOuting.OutingID,dbo.tblOutings.OutingStartTime,dbo.tblSessions.Ses sionDate,dbo.tblSessions.SessionStartTimeFROM dbo.vwSessions INNER JOIN dbo.vwEvents ONdbo.vwSessions.Event = dbo.vwEvents.EventIDINNER JOINdbo.luSessionAll ON dbo.vwEvents.EventID =dbo.luSessionAll.Event INNER JOINdbo.luOuting ON dbo.luSessionAll.SessionID =dbo.luOuting.SessionID INNER JOINdbo.luVehicle ON dbo.luSessionAll.Vehicle =dbo.luVehicle.VehicleID INNER JOINdbo.tblOutings ON dbo.luOuting.OutingID =dbo.tblOutings.OutingID INNER JOINdbo.tblSessions ON dbo.tblOutings.[Session] =dbo.tblSessions.SessionIDGROUP BY dbo.vwEvents.EventName, dbo.luSessionAll.SessionName,dbo.luOuting.OutingNumber, dbo.luVehicle.VehicleName,dbo.luOuting.OutingID, dbo.tblOutings.OutingStartTime,dbo.tblSessions.SessionStartTime, dbo.tblSessions.SessionDateORDER BY dbo.luVehicle.VehicleName, dbo.tblSessions.SessionDate,dbo.tblSessions.SessionStartTime, dbo.tblOutings.OutingStartTimethis returns all the outings. I would like the outing that has, inorder of importance, the latest session date, latest session time andlatest outing start time. Outing start time can sometimes be <<Null>>but the other two always have values. How would I go about doing this?thanks in advance for any help
I have a stored procedure below that returns a table of coaches. It worked before now it does not. It returns nothing, in vistual studio 2005 and on my asp.net webpage. But when I execute it in query analyzer with just SELECT * FROM Coaches it returns the rows. There is no error just will not return what I need. I recreated the database and stored procedure still doing the same thing. Any ideas? Would this be on my server hosting side? ALTER PROCEDURE [dbo].[GetCo]ASSELECT * FROM Coaches
Hi All: My below sub in application is returning only the Header Row instead of the relevant rows I guess therez problem in my "str" Syntax. However I fail to understand where exactly is it faultering. Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click Try con.Open()Dim empID As String = txtEmpID.Text Dim FName As String = txtFName.Text Dim LName As String = txtLName.TextDim str As String = "Select Emp_ID, Emp_FName,Emp_LName,Emp_Address1,Emp_HNo,Emp_MNo from Emp_Details where Emp_ID='" & empID & " ' Or Emp_LName='" & LName & " ' Or Emp_FName=' " & FName & "'"""Dim da1 As New SqlDataAdapter(str, con) da1.Fill(ds, "Emp_Details") dgEmp.DataSource = ds dgEmp.DataMember = "Emp_Details" dgEmp.DataBind() Finally con.Close() End Try End Sub
Thanks in Advance for your quick help. Regards, Brandy
TotalSelected.Value = SqlDataSource1.SelectCommand = "SELECT COUNT(*) FROM tblNews";
the reason i am tring to do this is so if i can find out the amount of rows before sqldatasource selects for details view then i can make the sqldataesource select depends on total minus 5 so e.g. if total 200 then - 5 so i can select bottom 195 so it misses top 5 for details view any1 any ideas? Thanks Andy,
I was racking my brains trying to figure out why SomeCommand.ExecuteNonQuery() was not returning any rows... SQL Server 2005 likes to put the SET NOCOUNT ON statement in every stored procedure you write. By hiding the count of records touched by your query, you also disable the results to be consumed by your application. So I don't recommend using this statement for your stored procedures and ASP.NET applications, as this functionality is fairly critical for error trapping.
This question has been posted on the site before but I could not find any resolution....I want to return rows 11 - 20 from a query that returns 100 records without using a cursor or temp table.
The closest query I have found is a query that numbers the rows, but I can't seem to use rownumber in a between clause...
Use Pubs SELECT emp_id, lname, fname, job_id, (SELECT COUNT(*) FROM employee e2 WHERE e2.emp_id <= e.emp_id AND e2.job_id = 10) AS rownumber FROM employee e WHERE job_id = 10 ORDER BY emp_id
I have two tables and I want to return data from both. Currently my select statement is returning just 1 child record for each parent record and I want to return all child records that match the parent record.
Say you have a table that contains 1000 rows, you create a simple select statement with a where clause that returns 100 or so of those rows. Easy enough.
Now, let's say that you wish to modify that select so that out of the 100 rows that match the where clause criteria, you only wish to return 10 rows randomly (i.e., you could run this query multiple times and get different results). How exactly would you go about doing this, efficiently?
I've thought about creating a stored procedure that will query the initial 100 rows into a temp table with an additional column (to number the rows from 1 to 100). Then setting up a loop (10 iterations) that will then generate a random number from 1 to 100 and select that row number into another temp table. At the end of the loop I'll have my table of randomly selected records. I am sure there is probably a better way to do this...
