Find List of Columns Updated inside Trigger
This will list the columns used by the update statement inside a trigger. More generic and useful for columns > 32.
2014-02-10 (first published: 2012-06-06)
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Find columns updated for columns > 32
RE: Unique Index
One option would be to use a trigger to prevent adding more duplicate entries. You could use an instead of trigger to check for existing values utilizing a non-unique index. If the value already exists, don't perform the insert or update and throw an error.
2003-12-13
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