数据库 存储过程

mysql与sqlserver是不同的。

/*创建存储过程*/
conn = getConnection();
//mysql dialect
String procedureSQL = "create procedure USER_EXIST(in loginName varchar(50),out amount int)" +  
            "begin select count(*) into amount from user where username = loginName ; end "; 
pstmt = conn.prepareStatement(procedureSQL);  
pstmt.executeUpdate();


/*调用存储过程*/
cstmt = conn.prepareCall("{call USER_EXIST(?,?)}");  
cstmt.setString(1, "小明");  
cstmt.registerOutParameter(2, Types.INTEGER); //注册输出参数  
cstmt.execute();  
System.out.println(cstmt.getInt(2)); //与上注册的对应