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Transcript
SQL Procedures ï® The author_count function could instead be written as procedure: create procedure account_count_proc (in title varchar(20), out a_count integer) begin select count(author) into a_count from depositor where depositor.customer_name = account_count_proc.customer_name end ï® Procedures can be invoked either from an SQL procedure or from embedded SQL, using the call statement. declare a_count integer; call account_count_proc( âSmithâ, a_count); Procedures and functions can be invoked also from dynamic SQL ï® SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 5th Edition, June 15, 2005 4.50 ©Silberschatz, Korth and Sudarshan
