Stored Procedure

Functions

Compilation

Stored in database in compiled format.

Note: Compiled indicates, Execution plan will be made by sql at the time it created and stored in DB.

Will compiled at run time

Return type

·         It can directly return only integers

·         Return type is not must

·         It can return any scalar or table

·         Return type is must

Multiple return values

It can also return more than one values (of any data type) indirectly with the help of out parameters

It won’t support out parameters

DML Statements

Can have DML statements.

Cannot have DML statements.

Note: In case of multi-table valued functions it can contain DML statements affecting Table Variables.

Execution

·         Stored procedure can execute function.

·         Cannot be the part of Select query as a column.

·        Stored Procedures cannot be used in the SQL statements anywhere in the WHERE/HAVING/SELECT

·         Function cannot execute stored procedure.

·         Can be the part of select query as a column.

·        Functions be used in the SQL statements anywhere in the WHERE/HAVING/SELECT

Exception handling

Can have Try….Catch

Cannot have Try…Catch