Interview Questions
1. What is the difference between Stored Procedure and Function?
- Function must return a value but in Stored Procedure it is optional (Procedure can return zero or n values)
- Functions can have only input parameters for it whereas Procedures can have input/output parameters.
- Functions can be called from Procedure whereas Procedures cannot be called from Function.
- Procedure allows SELECT as well as DML(INSERT/UPDATE/DELETE) statement in it whereas Function allows only SELECT statement in it.
- Procedures cannot be utilized in a SELECT statement whereas Function can be embedded in a SELECT statement.
- Stored Procedures cannot be used in the SQL statements anywhere in the WHERE/HAVING/SELECT section whereas Function can be.
- Exception can be handled by try-catch block in a Procedure whereas try-catch block cannot be used in a Function.
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