MySQL has built in features (ALTER IGNORE TABLE tablename ADD UNIQUE INDEX (fields)) which allows duplicates to be removed through the addition of a unique index even with duplicate entries. By using the IGNORE
And now the code looks very similar to my first suggestion. The thing missing is the WHERE '' NOT IN part N 56°04'39.16" E 12°55'05.25" Viewing 7 posts - 16 through 21 (of 21 total) Prev 1 2 You must be logged in to reply to this topic.Login to reply...
A standard/accepted solution for removing duplicates is the NODUPKEY option of PROC SORT.Unfortunately, this procedure is often used blindly. The firstduplicate observation is kept in the data set while all subsequent occurrences are deleted. But what if the third occurrence should have been kept...
que_description, bck_id, xd.pho_phone_number, data_type, status into #dup from XD_HM_Extract xd with (nolock) join #temp t with (nolock) on (xd.pho_phone_number = t.pho_phone_number) where data_type = 'XD' --select distinct accounts where phone number is duplicate ...
And if you do not expect ties in certifydate within a group of filedate, SQL will do proc sql; create table want as select * from have group by id,filedate having certifydate=max(certifydate); quit; 1 Like luvscandy27 Quartz | Level 8 Re: Finding and removing duplicates Poste...
i need to remove duplicates from a dimension table. these duplicates arise due to ASCII tab value, i.e. consider 'hospital' & 'hospital ' for example. i tried using TRIM function in the query as follows select LTRIM(RTRIM(column name)) from Table this query is not working. i need a ...
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I'm currently experimenting in our test lab with using the Remove-DuplicateEndpoints.ps1 provided in the Intel EMA API Scripts because our enterprise contact told me that the SQL manipulation we were told to do to get rid of duplicates is no longer supported. The issue I'm h...
using System.Data.SqlClient; using System.Xml.Linq; using System.Linq; using System.Data; using System.Collections; using System.Collections.Generic; namespace ConsoleApplicationZhiShu { public class Eratosthenes:IEqualityComparer<DataRow> { private string[] keys = new string[] {"Id","Name" }; ...
In your latest sample it's not removing of duplicates for which you remove entire rows based on some criteria. Here you'd like to empty repeating values in first and second columns keeping the rest untouched. Better to do that with formulas in these first columns. Logic of formula depends ...