Duplicate record identifier and update

Question

My records look like 
Name City Duplicateindicator 
SAM   NYC   0
SAM   NYC1 0
SAM    ORD  0
TAM   NYC  0
TAM   NYC1  0 
DAM   NYC  0  
for some reason numeric character are inserted into city which duplicated my records , 
I need to 
Check for the duplicate records by name ( If name is repeating ) check for city if they  having same city (NYC and NYC1) are consider same city here. I am ok to do this for one city at a time.
SAM has a duplicate record as NYC and NYC01 , the record which is having  SAM   NYC1 0 must be updated to SAM   NYC1 1 

Answer 1

Good day tatva
Since the Cities names is not exactly the same, you will need to parse the text somehow in order to clean the numbers from the name, this is best to do with SQLCLR using regular expression (If this fit your need, then I can post the CLR code for you).
In this case you use simple regular expression replace function.
On the result of the function you use simple query with the function ROW_NUMBER over (partition by RegularExpressionReplace(ColumnName, '[0-9]') order by
ColumnName)
on the result of the ROW_NUMBER  every row with ROW_NUMBER  more then 1 is duplicate
I hope this useful :-)
  Ronen Ariely
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