Is it possible to use math.random to generate the name of the item web app?

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  Published by: mario1977 on June 27, 2012 11:44

• The use of sequence and generate the number in a table that has data

  Hello
  
  There is a custom table that has a column Rowid (NULL).
  This table already has 10 k with rowid as null lines, now the user asks me to enter a unique number for the Rowid.
  I created a sequence, but don't know how to use this sequence and generate numbers for the Rowid.
  
  Could you suggest.
  
  Thank you.

  "rowid" is an oracle reserved word and should be avoided. Perhaps "Rowid" between quotes or something.

  Here's how to "fill" a column by a sequence:

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  Table created.
  
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  10000 rows created.
  
  SQL> create sequence idgen_sequence;
  
  Sequence created.
  
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  10000 rows updated.
  

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• Is it possible to pick up random points in the specific region of the image?

  Hello

  I do image analysis. I came across a problem. I want to take a random 8-bit image point, that I'm processing. But I have more than a single constraint: the point must be in a particular region in the image. Is there any diagram can be used?

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