Procedure can return zero or n values whereas function can return one value which is mandatory.
Procedures can have input/output parameters for it whereas functions can have only input parameters.
Procedure allows select as well as DML statement in it whereas function allows only select statement in it.
Functions can be called from procedure whereas procedures cannot be called from function.
Exception can be handled by try-catch block in a procedure whereas try-catch block cannot be used in a function.
We can go for transaction management in procedure whereas we can't go in function.
Procedures can not be utilized in a select statement whereas function can be embedded in a select statement.
UDF can be used in the SQL statements anywhere in the
UDFs that return tables can be treated as another rowset. This can be used in
Inline UDF's can be though of as views that take parameters and can be used in
Procedures can have input/output parameters for it whereas functions can have only input parameters.
Procedure allows select as well as DML statement in it whereas function allows only select statement in it.
Functions can be called from procedure whereas procedures cannot be called from function.
Exception can be handled by try-catch block in a procedure whereas try-catch block cannot be used in a function.
We can go for transaction management in procedure whereas we can't go in function.
Procedures can not be utilized in a select statement whereas function can be embedded in a select statement.
UDF can be used in the SQL statements anywhere in the
WHERE/HAVING/SELECT section where as Stored procedures cannot be.UDFs that return tables can be treated as another rowset. This can be used in
JOINs with other tables.Inline UDF's can be though of as views that take parameters and can be used in
JOINs and other Rowset operations. 
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