Have you ever come across this problem? You want to update a keyfield in a file that contains multiple keyfields....
It is quiet easy until the SQL-statement won't result in a duplicate key error. Here's the statement to bypass:
Update Filename f1 set Keyvalue2 = Keyvalue2 + 1 where 0 = (Select count(*) from filename f2 where f2.Keyvalue1 = f1.Keyvalue1 and f2.Keyvalue2 = f1.Keyvalue1+1)
MORE INFORMATION ON THIS TOPIC
The Best Web Links: tips, tutorials and more.
Ask your programming questions--or help out your peers by answering them--in our live discussion forums.
Ask the Experts yourself: Our application development gurus are waiting to answer your programming questions.