sql rank function example

Today, I saw a question raised by a netizen. See the following table:Indicator number calculation formula indicator value decomposition markA (B + C) + E? 1B 10 0C d + E? 1D 30 0E 5 0 The value of 0 is fixed, and the value of 1 is calculated based on the formula. I think this problem is very interesting. It can be implemented through recursive function. Of course, the formula needs to be parsed. Here I use a self-built

Creates a user-defined function that is a saved Transact-SQL routine that returns a value. User-defined functions cannot be used to perform a set of actions that modify the state of the global database. As with system functions, user-defined functions can be invoked from a query. It can also be executed as a stored procedure through an EXECUTE statement.The user-defined

of the Sysuser model), and then generate SysUserController.cs under the Controllers folder. The function of Sysusercontroller is to receive the action (action) of the view layer, and then to the corresponding model layer of the data interaction, and then return the results to view. Similarly, under the Views folder also generated the Sysuser folder, which corresponds to the five view page of the cshtml file. Right-index.cshtml--in the browser, displa

Original: http://blog.csdn.net/liu_1983/article/details/7269312 In SQL Server 2005/2008, two ranking Window Function and aggregation window function are supported. Take the SQL Server split page as an example to list order numbers in chronological order. With orderinfo ( Se

Label:First, the demand Before the ranking function of SQL Server should be row_number (), I usually use the row_number () + CTE to achieve paging; today, the park, see another built-in ranking function is also good, by the way I think of a demand, You can take 1 minutes to figure out how to do it. 　　The demand is simple: ask for the top five student information.

procedure, and drop function. However, there is a security implication for replication: to CREATE a sub-program, the user must have the create routine permission, however, users with this permission cannot write a subroutine to perform any operations on the slave server. Because the SQL thread on the slave server runs with full permissions. For example, if the m

ThinkPHP statistics ranking and paging display function example, thinkphp paging display This article analyzes thinkPHP's statistical ranking and paging display functions. We will share this with you for your reference. The details are as follows: 1. Paging Parameters Count Total FirstRow Start line ListRows Number of records retrieved each time L

together with rows. ;with cte as( select *, max(Price) over(partition by (ProductType)) MaxPrice from @t)select ProductID,ProductName,ProductType,Price from cte where Price = MaxPrice order by ProductType -- Over () Syntax:Over ([patition by] Another common scenario of -- over () is that it is used together with row_number () for paging. Now we will introduce the window function. Window Function OVER ()Spe

programmers in the country still rely on addslashes to prevent SQL injection, or to strengthen the Chinese to prevent SQL injection check, addslashes the problem is that hackers can use 0xbf27 to replace single quotes, Addslashes simply modifies 0xbf27 to 0xbf5c27 as a valid multibyte character, where the 0xbf5c is still considered a single quote, so addslashes cannot intercept successfully.Of course addsl

the function Rand generation is the float data type, which is obviously difficult to meet, but can be demanded by continuing processing of the results of the function rand (for example, its result multiplied by a value to preserve the integer part, etc.). Obviously, the result of the function checksum is the int data

in, to check the inserted data, from the minimum number to the maximum number of those numbers is not inserted into the table, find out the number of the previous and the last number? In this example, from 1 to 13, there are 3, 6, 7, 10 are not inserted in the table, the first and the last of these numbers are 2 and 4, 5 and 8, 9 and 11, i.e.Prev_val Next_val---------- ----------2 45 89 11If you don't have to parse the

random value (such as integer, date, and time data type) What if we get any random integer? The result generated by the function RAND is of the float data type, which is obviously difficult to meet the requirements. However, you can continue to process the result of the function RAND (for example, multiply the result by a value to retain the integer part) obtain

Tags: io ar using SP on data Art BS timeIn SQL SERVER 2005/2008, two types of ranking window functions and clustered window functions are supported.For example, in SQL Server, the order number is listed in chronological order.With OrderInfo as(SELECT row_number () over (ORDER by OrderDate) as number,Orderid,customerid, employeeid,orderdate from Orders (NOLOCK))SE

However, before SQL Server 2005, SQL Server 2000 did not provide this direct function for us to use, as did ACCESS. Below we divide 2 kinds of circumstances, to write the data ranking realization process. The test data are as follows: The results of the rankings are as follows: Access Copy Code code as follows: Select name, Score, (select IIF (

function command execution results:Charindex (SQL, microsoft SQL server)This function command returns the starting position of "SQL" in "microsoft SQL server". In this example, the cha

the same as that in the previous example! 4: Inner join or join; It is the record that the returned field ID exists in both the table votemaster and voter.5: Cross join (full join) with no where Condition A cross join without a where clause will generate the Cartesian product of the table involved in the join. The number of rows in the first table multiplied by the number of rows in the second table is equal to the size of the Cartesian result set. (

However, before SQL server 2005, SQL SERVER 2000 did not provide this direct function for us to use. The same is true for ACCESS. The following describes the implementation process of data ranking in two cases. The test data is as follows: The result after ranking is as follows: AccessCopy codeThe Code is as follows:Select name, score, (select iif (isnull (s

First, let's take a simple example: if a large production enterprise contains two subsystems: -There is a product production system deployed inside the Enterprise. Employees (production employees) working inside the enterprise can access the system through the Intranet. The background database is SQL Server 2008 R2 in the LAN. -Another product inventory system is run on the Windows azure platform. Emplo

Reward score: 30-resolution time: Functions and statements All that? Question added:Including authorization, index creation, and query .. Which are listed in the column, plus the statement...Questioner: Lich _ king-assistant level 3 Best Answer 1. Simple Query A simple Transact-SQL query only includes the select list, FROM clause, and WHERE clause. They respectively describe the queried columns and the queried Tables or views, and search co

However, before SQL server 2005, SQL SERVER 2000 did not provide this direct function for us to use. The same is true for ACCESS. The following describes the implementation process of data ranking in two cases. The test data is as follows: The result after ranking is as follows: Access Copy codeThe Code is as follows: select name, score, (select iif (isnu