Cannot retrieve the value I desired to Select using Stored Procedure

Question

I\'m trying to find a record. Which let me choose to find a existing record in my database using Stored Procedure. When I tried to search a existing data it doesn\'t give me

Answer 1

If you want the value that is returned via an OUT parameter of a stored procedure then you don't use a ResultSet, you use the CallableStatement parameter associated with the OUT parameter of the stored procedure. For example, for the test table

CREATE TABLE `allsections_list` (
 `SECTION_ID` int(11) NOT NULL,
 `SECTION_NAME` varchar(50) DEFAULT NULL,
 PRIMARY KEY (`SECTION_ID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

containing the sample data

SECTION_ID  SECTION_NAME
----------  ---------------
         1  one_section
         2  another_section

and the stored procedure

CREATE PROCEDURE `getSECTION_NAME`(IN myID INT, OUT myName VARCHAR(50))
BEGIN
   SELECT SECTION_NAME INTO myName FROM allsections_list WHERE SECTION_ID = myID;
END

then the following Java code

try (CallableStatement myFirstCs = conn.prepareCall("{call getSECTION_NAME(?,?)}")) {
    myFirstCs.setInt(1, 2);  // set IN parameter "myID" to value 2
    myFirstCs.registerOutParameter(2, Types.VARCHAR);
    myFirstCs.execute();
    String sectionName = myFirstCs.getString(2);  // get value from OUT parameter "myName"
    System.out.println(sectionName);
}

prints

another_section

Answer 2

you should use delimiter to change the delimiter to something different than ";" when you create the procedure:

delimiter //
CREATE PROCEDURE getSECTION_NAME(IN ID INT, OUT NAME VARCHAR(50)) 
BEGIN 
  SELECT SECTION_NAME INTO NAME FROM allsections_list WHERE SECTION_ID = ID; 
END    
//
delimiter ;

The first delimiter statement sets the delimiter to "//". This way, the ";" in your stored procedure code is not interpreted as a delimiter anymore. Your CREATE PROCEDURE statement then correctly ends at the "//". Aftwerwards, the second delimiterstatement changes the delimiter back to ";".