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Update from inner SQL
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To
01/03/2011 18:31:11
General information
Forum:
Microsoft SQL Server
Category:
SQL syntax
Environment versions
SQL Server:
SQL Server 2008
Application:
Web
Miscellaneous
Thread ID:
01502274
Message ID:
01502285
Views:
27
>>It may.
>
>When you say "It may", are you making reference that we can have unwanted updates if we omit the usage of an alias or that we can have unwanted updates even if we use an alias?

If we're not careful and there is no direct relationship (1 to 1) between table we're updating and a second table, we may end up updating wrong data.
If it's not broken, fix it until it is.


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