stored procedures triggers and userdefined functions

Ngày tải lên: 17/03/2014, 00:20

Ngày tải lên: 05/03/2014, 20:20

... InsertCommand, UpdateCommand, and DeleteCommand properties will contain Command objects that call the stored procedures shown earlier. First, the following example creates a SqlCommand object ... SELECT statement and sets the SelectCommand property of a SqlDataAdapter to that SqlCommand: SqlCommand mySelectCommand = mySqlConnection.CreateCommand(); mySelectCommand.CommandText = "SELECT ... DataAdapter object and set its SelectCommand, InsertCommand, UpdateCommand, and DeleteCommand properties with appropriate Command objects. This time, however, Let's take a look at these procedures. ...

Ngày tải lên: 14/12/2013, 13:15

... DeleteProduct() stored procedure and sets the DeleteCommand property of mySqlDataAdapter to myDeleteCommand: SqlCommand myDeleteCommand = mySqlConnection.CreateCommand(); myDeleteCommand.CommandText ... SqlCommand object named myUpdateCommand that contains a call to the UpdateProduct() stored procedure and sets the UpdateCommand property of mySqlDataAdapter to myUpdateCommand: SqlCommand myUpdateCommand ... InsertCommand Property of a DataAdapter The following example creates a SqlCommand object named myInsertCommand that contains a call to the AddProduct4() stored procedure: SqlCommand myInsertCommand...

Ngày tải lên: 14/12/2013, 13:15

... Bài 7: Triggers And Views Tác giả: Vovisoft.com Trong bài này chúng ta sẽ tìm hiểu ứng dụng của một loại stored procedure đặc biệt gọi là Triggers và dùng Views để thể ... là Triggers và dùng Views để thể hiện data trong một hay nhiều table như thế nào. Triggers Trigger là một loại stored procedure đặc biệt được execute (thực thi) một cách tự động khi có một data ... Manager bạn làm như sau: Right-Click lên table mà bạn muốn tạo trigger->All Tasks-> Manage Triggers. Lưu ý: Ðôi Khi ta chỉ muốn trigger thực sự hoạt động khi một hay vài column nào đó được...

Ngày tải lên: 25/08/2012, 09:00

Ngày tải lên: 31/08/2012, 16:33

Ngày tải lên: 01/09/2012, 10:25

Ngày tải lên: 04/09/2012, 10:16

... mới vừa thay đổi có hợp lệ trước khi commit hay roll back. (Xem thêm ví dụ bờn di) ã Cú 2 loi triggers (class) : INSTEAD OF và AFTER. Loại INSTEAD OF sẽ bỏ qua (bybass) action đã kích hoạt ... trigger có dạng như sau: CREATE TRIGGER trigger_name ON table_name or view_name FOR trigger_class and trigger_type(s) AS Transact-SQL statements Như vậy khi tạo ra một trigger ta phải chỉ rõ là ... trong Access database. View có thể được xem như một table ảo mà data của nó được select từ một stored query. Ðối với programmer thì view không khác chi so với table và có thể đặt ở vị trí của...

Ngày tải lên: 12/01/2013, 15:42

... aims and objectives, scope, methods and design of the study. Chapter II introduces an overview of English adjectives with the definitions of adjectives and their semantic and syntactic functions ... similarities and differences between English and Vietnamese adjectives in terms of their functions, usages as well as orders. Both English and Vietnamese, generally, can function as predicative and ... in terms of their semantic and syntactic functions of English adjectives as follows: stative and dynamic adjectives, gradable and non- gradable adjectives, inherent and non- inherent adjectives....

Ngày tải lên: 10/04/2013, 14:46

Ngày tải lên: 18/10/2013, 17:15

... if and only if S is convex. Moreover, f is proper and convex S ⊆ IR n nonempty and convex dom f ∩ S = ∅    =⇒ f + δ S is proper and convex. We have a correspondence between convex sets and ... Convex sets and convex functions taking the infinity value Passing from sets to functions A common device to construct convex functions on IR n is to construct a convex set F in IR n+1 and then take ... sets and convex functions taking the infinity value Operations preserving convexity Proposition. Let C be a convex subset of IR n and let f 1 , . . . , f m be convex functions. Let also and w 1 ,...

Ngày tải lên: 23/10/2013, 15:20

... Command object and set its CommandText // property to an EXECUTE statement containing the stored // procedure call SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); mySqlCommand.CommandText ... execute this stored procedure. Step 1: Create a Command Object and set its CommandText Property to an EXECUTE Statement Your first step is to create a Command object and set its CommandText property ... mySqlCommand.Parameters.Add("@MyProductID", SqlDbType.Int); Executing SQL Server Stored Procedures In Chapter 4 , you saw how to create and execute SQL Server stored procedures...

Ngày tải lên: 07/11/2013, 10:15

... Command object and set its CommandText // property to an EXECUTE statement containing the stored // procedure call SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); mySqlCommand.CommandText ... Command object mySqlCommand.Parameters.Add("@MyProductID", SqlDbType.Int); mySqlCommand.Parameters["@MyProductID"].Direction = ParameterDirection.Output; mySqlCommand.Parameters.Add( ... mySqlCommand.Parameters.Add( "@MySupplierID", SqlDbType.Int).Value = 1; mySqlCommand.Parameters.Add( "@MyCategoryID", SqlDbType.Int).Value = 1; mySqlCommand.Parameters.Add(...

Ngày tải lên: 07/11/2013, 10:15

... }else{ gotoAndPlay("StayHome"); } Pay particular attention to the line that reads: and so forth. If a function doesn't return a value at all (like the functions used ... channelNames[2] = "Classics", and so on. This is important to understand as we progress. NOTE For more information on arrays, see Lesson 6 , "Creating and Manipulating Data." Let's ... return a value. Although the functions we used in this lesson have not made use of this syntax (they still work properly), using this syntax is considered good practice and should improve the speed...

Ngày tải lên: 07/11/2013, 15:15

... Introducing Stored Procedures SQL Server allows you to store procedures in a database. Stored procedures differ from user-defined functions in that procedures can return a much ... this section, you'll learn how to create a stored procedure in the Northwind database and run it using the Query Analyzer tool. Creating a Stored Procedure The procedure you'll see ... Query Analyzer allows you to view, modify, and delete procedures as well. Tip You can also delete a procedure using the DROP PROCEDURE statement, and you can modify a procedure using the ALTER...

Ngày tải lên: 14/12/2013, 13:15

... tasks you need to by using Command objects and stored procedures. 4.3 Execute Parameterized Stored Procedures in ADO.NET To take advantage of stored procedures to their full power, ... Command cmdText Specifies the SQL statement to use. Can be SQL statement or names of objects such as tables or stored procedures. Command Connection Uses the Connection object. Command CommandType ... of command you want to execute. Can be one of the following command types: StoredProcedure, DirectTable, or Text. Command Parameters Parameters to pass to the stored procedure. Command ExecuteReader...

Ngày tải lên: 14/12/2013, 20:16

... www.mysql.com Stored Procedures in MySQL 5.0 Creating, dropping, etc ã Procedures and functions are stored in a system table: mysql.proc ã Fields are: name-type (key), definition (a blob), and other ... www.mysql.com Stored Procedures in MySQL 5.0 Stored Procedures in MySQL 5.0 Per-Erik Martin, MySQL AB San Jose, 2003-04-11 â MySQL AB 2003 2003-04-11 | â MySQL AB 2003 | PEM | www.mysql.com Stored Procedures ... www.mysql.com Stored Procedures in MySQL 5.0 Who Are You? ã How many have used stored procedures in some other database? 3 2003-04-11 | â MySQL AB 2003 | PEM | www.mysql.com Stored Procedures...

Ngày tải lên: 16/01/2014, 18:20

... parts (a) and (b). 6.3 For the unbalanced 3-phase system shown in Figure P6.3, find the currents II 12 , , I 3 and hence I bB . Assume that Zj A =+ 10 5 Ω , Zj B =+ 15 7 Ω and Zj C =− 12 ... â 1999 CRC Press LLC 6.3.1 MATLAB functions roots, residue and polyval MATLAB has the function roots that can be used to obtain the poles and zeros of a network function. The MATLAB ... polynomial fx x x x () =+ + + 32 92315 the commands to compute and print out the roots of fx () are p = [1 9 23 15] r = roots (p) and the values printed are r = -1.0000 -3.0000...

Ngày tải lên: 23/01/2014, 03:20

... Explorer and expand the Northwind database. 1. Right-click on the Stored Procedures node, and then choose New Stored Procedure. You will be taken into a new page that is a template for stored ... parameters that can be used as criteria in stored procedures, you will use the @ symbol in front of the parameter name, and declare them at the top of your stored procedure. Again, you can see this ... Server objects. Comments Although you can create stored procedures on-the-fly and not save them in the database, it is sometimes necessary and desirable to save them permanently so that you...

Ngày tải lên: 26/01/2014, 11:20