What is return in stored procedure?
Stored Procedure and Function CallsSQLJ provides convenient syntax for calling stored procedures and stored functions in the database, as described immediately below. These procedures and functions could be written in Java, PL/SQL (in an Oracle database), or any other language supported by the database. Show A stored function requires a result expression in your SQLJ executable statement to accept the return value and can optionally take input, output, or input-output parameters as well. A stored procedure does not have a return value but can optionally take input, output, or input-output parameters. A stored procedure can return output through any output or input-output parameter. Calling Stored Procedures Stored procedures do not have a return value but can take a list with input, output, and input-output
parameters. Stored procedure calls use the #sql { CALL PROC( Presume that you have defined the following PL/SQL stored procedure: CREATE OR REPLACE PROCEDURE MAX_DEADLINE (deadline OUT DATE) IS BEGIN SELECT MAX(start_date + duration) INTO deadline FROM projects; END; This reads the table In SQLJ, you can call this java.sql.Date maxDeadline; ... #sql { CALL MAX_DEADLINE(:out maxDeadline) }; For any parameters, you must use the host expression tokens Note: If you want your application to be compatible with Oracle7, do not include empty parentheses for the parameter list if the procedure takes no parameters. For example: not: Calling Stored Functions Stored functions have a return value and can also take a list of input, output, and input-output parameters. Stored function calls use the #sql result = { VALUES(FUNC( Where Referring back to the example in "Calling Stored Procedures", consider defining the stored procedure as a stored function instead, as follows: CREATE OR REPLACE FUNCTION get_max_deadline() RETURN DATE IS DECLARE DATE deadline; BEGIN SELECT MAX(start_date + duration) INTO deadline FROM projects; RETURN deadline; END; In SQLJ, you can call this get_max_deadline function as follows: java.sql.Date maxDeadline; ... #sql maxDeadline = { VALUES(get_max_deadline) }; The result expression must have a type that is compatible with the return type of the function. In Oracle SQLJ, the following syntax (outer parentheses omitted) is also allowed: #sql maxDeadline = { VALUES get_max_deadline }; For stored function calls, as with stored procedures, you must use the host expression tokens Notes: If you want your stored function to be portable to non-Oracle environments, then you should use only input parameters in the calling sequence, not output or input-output parameters. If you want your application to be compatible with Oracle7, then do not include empty parentheses for the parameter list if the function takes no parameters. For example: not: Using Iterators and Result Sets as Stored Function Returns SQLJ supports assigning the return value of a stored function to an iterator or result set variable, provided that the function returns a
The following example uses an iterator to take a stored function return. Using a result set is similar. Example: Iterator as Stored Function Return This example uses an iterator as a return type for a stored function, using a Presume the following function definition: CREATE OR REPLACE PACKAGE sqlj_refcursor AS TYPE EMP_CURTYPE IS REF CURSOR; FUNCTION job_listing (j varchar2) RETURN EMP_CURTYPE; END sqlj_refcursor; CREATE OR REPLACE PACKAGE BODY sqlj_refcursor AS FUNCTION job_listing (j varchar) RETURN EMP_CURTYPE IS DECLARE rc EMP_CURTYPE; BEGIN OPEN rc FOR SELECT ename, empno FROM emp WHERE job = j; RETURN rc; END; END sqlj_refcursor; Use this function as follows: ... #sql iterator EmpIter (String ename, int empno); ... EmpIter iter; ... #sql iter = { VALUES(sqlj_refcursor.job_listing('SALES')) }; while (iter.next()) { String name = iter.ename(); int empno = iter.empno(); } iter.close(); ... This example calls the Can we return from stored procedure?RETURN: A single integer value can be returned from a stored procedure with a RETURN statement. Result sets: A stored procedure can return data via one or more SELECT statements.
What is procedure return?When the last statement in the procedure is completed, we say the procedure returns; that is, the thread of control of statement execution returns to the process from which the procedure was called, and the next statement in the process after the call is executed.
How do you return a stored procedure in SQL Server?What is Return Value in SQL Server Stored Procedure?. Right Click and select Execute Stored Procedure.. If the procedure, expects parameters, provide the values and click OK.. Along with the result that you expect, the stored procedure also returns a Return Value = 0.. What does a SQL query return?The SQL SELECT statement returns a result set of records, from one or more tables. A SELECT statement retrieves zero or more rows from one or more database tables or database views. In most applications, SELECT is the most commonly used data manipulation language (DML) command.
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