how to create function in c

procedure_name; some examples of stored procedures and functions delimiter|define Procedurecreate procedure P2_test1 (out Para1int) BeginSelect sum(Val) into Para1 from Test1;end|call Procedurecall p2_test1 (@sum)|Select@sum |ALTER procedure did not work out to define the function createfunctionF_test1 (nameChar( -)) returnsChar( -)//parameter is not in,out, all inBeginreturn concat ('Hello', Name,' !'); end|calling FunctionsSelectF_test1 ('Hongjian')|three different show usage show procedure S

; ALTER TABLE sale_data RE ORGANIZE PARTITION p201001,p201002,p201003, N Bsp p201004,p201005,p201006, → and nbsp p201007,p201008,p201009 into → ( nbsP PARTITION p2010q1 VALUES less THAN (201004), → PARTITION p2010q2 VALUE S less THAN (201007), PARTITION p2010q3 VALUES less THAN (201010) - >); Query OK, 0 rows affected (1.14 sec) records:0 duplicates:0 warnings:0 partition The following SQL, will p2010q1 partitions, split into s2009 and s2010 two part

Background knowledge:sp_configure display or change global configuration settings for the current server (use sp_configure to display or change server-level settings.) )View global configuration valuesMethod 1, execute sp_configure; view all directly.Method 1, execute sp_configure @configname = ' Name ', and view the specified directly.Method 2, save to the table for easy operationFirst step: Build a table NBSP;C reate table Instanceco

Tags: JSON mongodb dynamic column mariadbMariaDB 10.0.X, dynamic columns (Columns) can support JSON format for data acquisition.To be compatible with traditional SQL syntax, MariaDB 10 and MySQL5.7 support native JSON format, which is a relational database and a document-type NoSQL database .Instructions for use:# # #表结构CREATE TABLE assets ( item_name varchar (+) primary key,--A common attribute for all items dynamic_cols blo B--Dynamic columns'll be stored here );# # #插入JSON格式数据Mysql> INSERT in

TABLE TEACHER_TB2 (t_id int auto_increment,t_name varchar (255), PRIMARY KEY ( t_id)); CREATE TABLE STUDENT_TB2 (s_id int auto_increment primary key,s_name varchar (255) not Null,t_java Int,constraint student_t EACHER_FK foreign KEY (T_java) references Teacher_tb2 (t_id)); #建立多列组合外键约束 CREATE TABLE Teacher_tb5 (t_namevarchar (255), T_pass varchar (255), primary key (T_name,t_pass)); CREATE TABLE student_tb5 (s_id int auto_increment primary key,s_name varchar (255) not null,t_java_pass varchar (2

Label: page301-354 Other Solutions---window functions-test data and table use [NB] GO/****** object: Table [dbo]. [T_person2] Script Date: 08/14/2015 11:24:46 ******/SET ansi_nulls on Go Set QUOTED_IDENTIFIER on Go Set ansi_padding on Go C Reate TABLE [dbo]. [T_person3] ([FName] [varchar] () NULL, [fcity] [varchar] () NULL, [Fage] INT, fsalary int) On [PRIMARY] GO SET ansi_padding OFF INSERT into T_person3 (FName, fcity, fage,fsalary) VALUES (' Tom '

Label:When multiple data times are inserted through a task, it is wrong.DBcontext is not thread safe, if WEBAPI is created for each request DBcontextSome explanations:http://stackoverflow.com/questions/28106267/insert-into-dbcontext-multithreading#DbContextIsn ' t thread-safe.One context and many threads-it is a bad practice. It's best to create the context for each thread. I could recommend to you reconsider your algorithm and reate the context for e

MyFunc () {} if (! Function.prototype.extend) { Function() { varthis; return function () { func.apply (this, arguments);}} ; var myFunc = Myfunc.extend ();Finally, summarize:If you use Person.prototype = Animal.prototype to indicate that a person inherits from Animal, the Instanceof method also displays an instance of P and Animal, returning true.This method is not used because of the following two reasons:1.new creates a new object that avoids setting Person.pro

); $t 1->join (); $t 2->join (); Sharing and syncingThreads::shared#!/usr/bin/perl # Use threads; Use threads::shared; Use strict; My $var: shared = 0; # Use:share tag to define my @array: Shared = (); # Use:share tag to define my%hash = (); Share (%hash); # Use Share () funtion to define sub start {$var = 100; @array [0] = 200; @array [1] = 201; $hash {' 1 '} = 301; $hash {' 2 '} = 302; } Sub

JavaScript Design Patterns1. IntroductionJavaScript is a weakly typed language, but classes can be simulated by functionsThe most common implementation methods are as follows:function Car (model){This.model = model;This.color = "Red";This.year = "2012";This.getinfo = function () {return This.model + "" + this.year;}}Next we can use the top definition car to construct an instantiated object, like this:var myCar = new Car ("Hello");Mycar.year = "2015";Console.log (Mycar.getinfo ());2. Constructor

]$ function gcc {echo "Just a test for GCC";}[[email protected] var]$ alias gcc= ' gcc '[Email protected] var]$ gccJust a test for GCC[Email protected] var]$/USR/BIN/GCCGcc:no input Files[[email protected] var]$ alias gcc= '/USR/BIN/GCC '[Email protected] var]$ gccGcc:no input Files[Email protected] var]$Why does GCC have a different response when defining GCC's funtion and specifying that the specific/USR/BIN/GCC path is not specified when the two-ti

) instead of overloading.(3) The function derived::h (float) hides the base::h (float) instead of the overlay. C + + pure virtual functionFirst, the definitionA pure virtual function is a virtual function declared in a base class that is undefined in the base class, but requires that whatever derived class defines its own implementation method. The method of implementing a pure virtual function in a base class is to add "= 0" after the function prototypevirtual void

The SetTimeout function is the most critical function for implementing dynamic effects in JavaScript. But yesterday when I wrote the code, I found that when the first argument is a function call, you cannot pass arguments to the called function. This is really a very serious problem, I have been troubleshooting for a long time to find the problem, waste more than n times ah. Later on the Internet to check, this is actually a bug in IE. There are many solutions, of which I think the most cow is

with semicolons. 5-Constructor for creating objects Copy the code code as follows: function Person (firstName, lastName) { this.firstName = firstName; this.lastName = lastName; } var Saad = new Person ("Saad", "Mousliki"); 6-Be careful with typeof, instanceof, and constructor Copy the code code as follows: var arr = ["a", "b", "c"]; typeof arr; // return "object" arr instanceof Array // true arr.constructor (); // [] 7-Create a Self-calling Funtion