Hello, All.

   Which data state is supposed to be seen in WHEN block? Before undoing 
changes or after it?
   Say, we have "update t set f=1" then in begin-end block "update set f=2" is 
done and 
then exception is thrown. What value should give "select f from t" in WHEN 
block? 1 or 2?

-- 
   WBR, SD.

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