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Home / Oracle Comparison Functions

Oracle Comparison Functions

  • COALESCE – show you how to substitute null with a more meaningful alternative.
  • DECODE – learn how to add if-then-else logic to a SQL query.
  • NVL – return the first argument if it is not null, otherwise, returns the second argument.
  • NVL2 – show you how to substitute a null value with various options.
  • NULLIF – return a null if the first argument equals the second one, otherwise, returns the first argument.
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