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Need Help on Oracle supplied packages

edited Mar 20, 2013 4:56AM in PL/SQL (MOSC) 2 commentsAnswered
Hi All

 

Need your help on below questions.

 

  1. How to identify the dependencies for a table or column across the database ( I have used data dictionary tables, but it gives the comment section also, Is there any standard procedure that we can get from oracle supplied packages like dbms_utility.get_dependencies ?)
  2. I need to write a function that should return any datatype which is dynamic (blob,clob,number, varchar)
  3. In Indexes, Does index store null values? If so can you please explain when we execute a query with where column is null,  whether can we use hints for this scenario

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