Basic SQL - Advanced SQL Tutorials

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• Correlated vs Noncorrelated Subquery example in SQL

  Main difference between Correlated and Noncorrelated subquery is that, Correlated subquery depends upon Outer query and can not execute by its own whi
  http://javarevisited.blogspot.com/2012/07/subquery-example-in-sql-correlated-vs.html
  
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• Dont delete truncate your tables in SQL

  Dont Delete , truncate it. If you are working in a huge table you need to be very very careful while executing any query because due to large data an
  http://javarevisited.blogspot.com/2011/10/how-to-use-truncate-and-delete-command.html
  
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