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Unique?

Author

Topic

WJHamel
Aged Yak Warrior

651 Posts

Posted - 2012-07-11 : 13:23:21

Help please.

I need to run the following to bring data from one table to another:



insert into MNI.dbo.MNI (
      MNINO
      ,ECSOID
      ,[LNAME]
      ,[FNAME]
      ,[MNAME]
	,[Uniquekey])
	
Select 'NOLINK'+Cast(WarrantID as varchar(6))  as MNINO
,'NOLINK'+CAST (WarrantID as varchar(6)) as ECSOID
,Substring(Lastname,1,20) as Lname
,Substring(Firstname,1,15) as fname
,Substring(MIddlename,1,15) as Mname
,SCADMIN.dbo.fnsc_GetUniqueID(newid())
	
  FROM douglas.dbo.WarrantVictim
  
GO

But here's the kick. In this particular table, there cannot be duplicate MNInos or ECSOID values. So i really only need it to insert records with unique WarrantID values. Is there a way to modify this script to do that?

thanks

robvolk
Most Valuable Yak

15732 Posts

Posted - 2012-07-11 : 13:50:34

If I understand you correctly, add this:

WHERE WarrantID IN(SELECT WarrantID 
FROM douglas.dbo.WarrantVictim 
GROUP BY WarrantID 
HAVING COUNT(*)=1)

WJHamel
Aged Yak Warrior

651 Posts

Posted - 2012-07-11 : 13:56:58

Rob,

perfect

thanks

Lamprey
Master Smack Fu Yak Hacker

4614 Posts

Posted - 2012-07-11 : 14:01:06

Here's one way:

INSERT
	....
SELECT
	MNINO
	,ECSOID
	,Lname
	,fname
	,Mname
	,UnNamedColumn	
FROM
	(
		SELECT 
			'NOLINK'+Cast(WarrantID as varchar(6))  as MNINO
			,'NOLINK'+CAST (WarrantID as varchar(6)) as ECSOID
			,Substring(Lastname,1,20) as Lname
			,Substring(Firstname,1,15) as fname
			,Substring(MIddlename,1,15) as Mname
			,SCADMIN.dbo.fnsc_GetUniqueID(newid()) AS UnNamedColumn
			,ROW_NUMBER() OVER (PARTITION BY WarrantID ORDER BY WarrantID) AS RowNum
		FROM 
			douglas.dbo.WarrantVictim
	) AS T
WHERE 
	RowNum = 1

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