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Dbhelpersql. Cs source file Add the followingCode /**/ /// /// Total number of returned records /// /// /// /// Public Static Int Getcount ( String Strwhere) { String Strsql = Strwhere; Object OBJ = Dbhelpersql. getsingle (strsql ); If (OBJ = Null ) {Return1;} Else {ReturnInt. Parse (obj. tostring ());} } Add to Dal Layer Public Int Getcount ( String Strwhere) {Stringbuilder strsql = New St

For the insertion and update of massive data, ADO. NET is indeed inferior to JDBC, and JDBC has a unified model for batch operations.Very convenient:Preparedstatement PS = conn. preparestatement ("insert or update arg1, args2 ....");Then you canFor (INT I = 0; I PS. setxxx (realarg );.....PS. addbatch ();If (I % 500 = 0) {// assume that five hundred entries are submitted once.Ps.exe cutebatch ();// Clear parame batch}}Ps.exe cutebatch ();This operatio

I used to delete massive data in the entire table in SQL Server (million data records) and deleted it with delete for a long time. When I was seen by my predecessors, I was so stupid: "Use truncate table ". Sorry, I was too easy to learn. I went back to check the information and found that truncate table is a powerful tool to quickly delete the entire table. Now I want to explain its advantages and disadvantages: Functionally, The truncate table is th

procedure, and its annotations have been written in it. In the case of large data volumes, especially when querying the last few pages, the query time generally does not exceed 9 seconds. Other stored procedures may cause timeout in practice, therefore, this stored procedure is very suitable for queries of large-capacity databases. I hope that through the analysis of the above stored procedures, we can provide some inspiration and improve the efficiency of our work. At the same time, I hope

EXP/IMP massive data From: Macro Beth Oracle exp/IMP are two tools frequently used by many users. they are often used for database logical backup, database restructuring, data transfer, and other work. first, exp unload the data to the file system to generate. DMP file, and then the data is loaded into the database by IMP when necessary. for small and medium databases, the DMP file generated by the full databas

A massive number of jquery plug-in posts are very classic. I don't know when it will start to spread. I have collected them a long time ago. I posted a copy in the log for convenience of my work. Some of them are no longer accessible, maybe the file is removed or blocked. There is nothing special to say about what we share. We only need to thank the people who have shared it with us. The cat notify reminds everyone to pay attention to the version

DependenciesAmong these objects and using only those in representing all statistical connections. 2 Statistical Limits on Data Mining A common sort of data-mining problem involvesDiscovering unusual events hiddenWithin massive amounts of data. However, data mining technology is not always effective. Here we will introduce bonferroni's principle to avoid misuse of this technology. 2.1 Total Information Awareness In 2002, the Bush administration put

this way, the size of the file is smaller, and the hash table created is smaller. Modulo the word hash value to 5000 and assign the word to 5000 files based on the result. In this way, on average, a file contains 1g/5000 = m words, and the hash table can basically be installed. Perform hashmap statistics on each file, write the word and frequency to a new file, and get 5000 new files. Maintain a minimum heap of 100 nodes and read each record of 5000 files in sequence. If the frequency is less t

With the rapid development of network and information technology, e-books are becoming increasingly popular. The emergence of e-book readers represented by Amazon Kindle has changed people's traditional reading methods, just as iPod has changed people's listening to music. Today, many online bookstores have launched e-book products. Compared with traditional paper books, the features of portable, easy to use, and large capacity of e-books are very suitable for modern life, users can purchase mor

With the development of enterprise business, there are more and more large data warehouses, and their scale is also expanding rapidly, increasing by three times every two years on average. Large Data Warehouses require scanning dozens, hundreds, or thousands of disks at the highest read speed. Therefore, enterprises often find that the larger the data warehouse, the slower the operation speed. Oracle Exadata database machine, also known as "database cloud server", is designed to solve similar p

Massive video data, open-source websites 56 open api call data for the entire site open source Demo address: http://dev.56.com: 81/56 api/index. php? Type = baby Enter description56api_examples.zip (141 K) Downloads: 0 56 open network platform Include ("./SDK. php "); $ M = new Memcached (); $ M-> addServer ('2017. 16.245.91 ', 172 ); $ Array = array (); $ Category = new open56Client (APPKEY, APPSEC

some problems with GC in the standard library 2.ocaml-reason: The high-performance language of the Academy 3.node.js 4.haskell: Test results: Test again: Since we heard that go1.8 optimized GC for massive objects, we pulled the master version of 1.8 and tested it again. Test results: Conclusion: 1.go1.8 request delay has been significantly optimized 2. There is no need to use the Fasthttp,net/http delay as very low 3. Go is one of the preferred

The code for adding and deleting massive amounts of data to and from a mysql data table needs to be tested today. However, the data source in the data table has become a major problem, and the same problem occurs when you search online. Recommended methods include: 1. add in excel and import it to the data table (feasible but troublesome) 2. manually add one by yourself (cannot stand it, drive people crazy) 3. use a program to add data cyclicall

connections supported by IIS 7In the Hkey_local_machine\system\currentcontrolset\services\http\parameters section, change the default number of connections to 5000 to 100000.In addition, for large concurrent processing of databases, see the following information:Http://msdn.microsoft.com/zh-cn/library/aa0416cz.aspxhttp://blog.csdn.net/fhzh520/article/details/7757830http://blog.csdn.net/truong/article/details/8929438Http://www.cnblogs.com/chuncn/archive/2009/04/21/1440233.htmlhttp://www.baidu.co

Which file system is more suitable for massive small files? -- Linux general technology-Linux technology and application information. For details, refer to the following section. Recently, I am worried about the new server architecture, wandering between freebsd and centos, and I am more confused about what file systems I choose. Bosses give their ideas. Low machine Configuration: Intel Dual Core 2.0 GHz E2180 1 GB DDR2 SDRAM 160 GB SATA2 HD Purp

entries in the created table:# TC Filter Add dev eth1 protocol IP parent 1:0 prio 5 u32 HT 2:7b: match ip src 1.2.0.123 flowid 1:1# TC Filter Add D EV eth1 Protocol IP parent 1:0 prio 5 u32 HT 2:7b: match ip src 1.2.1.123 flowid 1:2# tc Filter Add dev eth1 protocol IP parent 1:0 prio 5 u32 HT 2:7b: match ip src 1.2.3.123 flowid 1:3# tc Filter Add dev eth1 protocol IP parent 1:0 pri o 5 u32 HT 2:7b: match ip src 1.2.4.123 flowid 1:2This was entry 123, which contai

This forum Article(SCID Technical Community) Describes in detail the fastest way to import massive data from SQL Server. For more information, see the following: Recently, I analyzed the database of a project. to import a large amount of data, I want to import up to 2 million pieces of data to sqlserver at a time. If I use a normal insert statement to write the data, I am afraid that the task cannot be completed without an hour. BCP is considered

that you have a place to relax after a busy day.It can provide quality support in the form of chairs, pillows, bed or sofa. these are solid, make it so. you will not have the problem of where to put them where they can be in the bedroom, living room, game room or even outside. this will certainly be one of the smartest purchases because they can easily adapt to changes in space. these bils can certainly provide you with the luxury you are looking. all living spaces are more beautiful when place

Detailed code for thinkphp processing of massive data table mechanism

Source: http://kb.cnblogs.com/page/54556/ A massive number of jQuery plug-in posts are very classic. I don't know when it will start to spread. I have collected them a long time ago. I posted a copy in the log for convenience of my work. Some of them are no longer accessible, maybe the file is removed or blocked. There is nothing special to say about what we share. We only need to thank the people who have shared it with us. The cat notify reminds eve