No, nothing like INSERT UNIQUE - your query is fine.

Do you have a backup of the database anywhere?

If not, you are in trouble.

SPs do not handle user interaction - your app does that.

It should then call SPs, with appropriate parameters, to do the data processing side - whether it be data retrieval,...

As I said, you need to use single quotes.

declare @quote char(1)

set @quote = ''''      --4 single quote characters

'DELETE ' +

' WHERE dssid = ' + @quote + @vchdssid +...

Use single quotes around literals in SQL Server. To debug, try running your statement in Query Analyser and see what happens.

By the way, this looks like a horrendously complex routine for...

Stored procedures should perform better, in general. Network traffic is optimised and SQL Server should be able to reuse execution plans when running SPs multiple times.

When the system finds a 'duplicate', what logic should be used to determine which of them to delete?

Are you using Access to delete the data?

If you are using linked tables within Access, you must ensure that Access knows the primary key of the table when you link...

OK - this is turning into a weird one. If you take the

and PickupDate > '3/2/2006' --*****

line out of the query, what is the latest entry displayed?

You could also...

What is the datatype of the PickupDate field - is it datetime or varchar()?

Expanding on PW's post, I suggest you use this format:

'YYYY-MM-DD HH:MM:SS.mmm'

So your query becomes:

...

and PickupDate > '2006-02-03 00:00:00.000'

order by PickupDate

(if you're using English date format.)

A strange request!

update table set age = 32 where id = [PK for row containing John's data]

update table set age = 26 where id = [PK for row...

Please do not cross post. Follow this thread.

http://www.sqlservercentral.com/forums/shwmessage.aspx?forumid=23&messageid=268690

Are you exporting the field as text?

So what's wrong with my solution?

Your solution, I'm afraid, is logically flawed. Eg if this is sample data

T1 (CustNo, OrderNo)

1,1

1,2

2,1

T2 (CustNo, OrderNo)

1,1

Your query...