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Stored procedure vs User Functions

Difference between Stored procedure vs User Functions:

ñ Procedure may return none or more values.Function must always return one value either a scalar value or a table.
ñ Procedure have input,output parameters.Functions have only input parameters.
ñ Stored procedures are called independently by EXEC command whereas Functions are called from within SQL statement.
ñ Functions can be called from procedure.Procedures cannot be called from function.
ñ Exception can be handled in Procedure by try-catch block but try-catch block cannot be used in a function.(error-handling)
ñ Transaction management possible in procedure but not in function.

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