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what are the differences between rownum and level pseudo columns?

  
Total Answers and Comments: 1 Last Update: December 12, 2007     Asked by: ddkdhar 
  
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December 12, 2007 11:46:12   #1  
gpsaravanan202 Member Since: October 2007   Contribution: 2    

RE: what are the differences between rownum and level pseudo columns?
The only difference between rownum and level pseudocolumn  is

Rownum is used to order the datas according to their ranks and it is used in inline views..
Level pseudocolumn is used in hierarchial retrival of database.....

 
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Latest Answer : rownum is generated for the data retrieved and stored in an implicit cursor  so depending on the outcum it may varry where as rowid is generated automatically for creation of every row,hence forth if we want retrive a particular row in a table we ...
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Latest Answer : The only difference between rownum and level pseudocolumn  isRownum is used to order the datas according to their ranks and it is used in inline views..Level pseudocolumn is used in hierarchial retrival of database..... ...
Read Answers (1) | Asked by : ddkdhar


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