置顶 后台执行两条SQL语句 private void toTop( int pEC_TempID) { int mEC_TempID = 0; object oEC_TempID = myShare.GetAObject( true , 0, "EC_TempID" , "ElectronCards_temp" , "VendorID=" + ViewState[ "VendorID" ].ToString() + " and WebSiteType=
置顶 后台执行两条SQL语句
private void toTop(int pEC_TempID) { int mEC_TempID = 0; object oEC_TempID = myShare.GetAObject(true, 0, "EC_TempID", "ElectronCards_temp", "VendorID=" + ViewState["VendorID"].ToString() + " and WebSiteType=" + ViewState["WebSiteTypeID"].ToString()); if (oEC_TempID != null) { mEC_TempID = int.Parse(oEC_TempID.ToString()); } SqlConnection con = null; bool flag = false; try { con = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]); string sql1 = "update ElecProducts_Temp set DisplayOrder = case when DisplayOrder=255 then DisplayOrder else DisplayOrder+1 end where EC_TempID = "+mEC_TempID; string sql2 = "update ElecProducts_Temp set DisplayOrder=1 where EP_TempID=" + pEC_TempID; con.Open(); SqlCommand com = new SqlCommand(sql1, con); flag = com.ExecuteNonQuery() > 0 ? true : false; SqlCommand com2 = new SqlCommand(sql2, con); flag = com2.ExecuteNonQuery() > 0 ? true : false; con.Close(); } catch (SqlException se) { } finally { con.Close(); } if (flag) { myShare.WebMessageBox(this.Page, "置顶成功!"); int mECP_TempID = Convert.ToInt32(myShare.GetAObject(true, 0, "EC_TempID", "ElectronCards_temp", "VendorID=" + ViewState["VendorID"].ToString() + " and WebSiteType=" + ViewState["WebSiteTypeID"].ToString())); BindToDataList(mECP_TempID); } else { myShare.WebMessageBox(this.Page, "置顶信息时出错,请重试!"); } }
posted on
Copyright ©2013 porray Powered By: 博客园 模板提供:沪江博客
,
MySQLviewshavelimitations:1)Theydon'tsupportallSQLoperations,restrictingdatamanipulationthroughviewswithjoinsorsubqueries.2)Theycanimpactperformance,especiallywithcomplexqueriesorlargedatasets.3)Viewsdon'tstoredata,potentiallyleadingtooutdatedinforma

ProperusermanagementinMySQLiscrucialforenhancingsecurityandensuringefficientdatabaseoperation.1)UseCREATEUSERtoaddusers,specifyingconnectionsourcewith@'localhost'or@'%'.2)GrantspecificprivilegeswithGRANT,usingleastprivilegeprincipletominimizerisks.3)

MySQLdoesn'timposeahardlimitontriggers,butpracticalfactorsdeterminetheireffectiveuse:1)Serverconfigurationimpactstriggermanagement;2)Complextriggersincreasesystemload;3)Largertablesslowtriggerperformance;4)Highconcurrencycancausetriggercontention;5)M

Yes,it'ssafetostoreBLOBdatainMySQL,butconsiderthesefactors:1)StorageSpace:BLOBscanconsumesignificantspace,potentiallyincreasingcostsandslowingperformance.2)Performance:LargerrowsizesduetoBLOBsmayslowdownqueries.3)BackupandRecovery:Theseprocessescanbe

Adding MySQL users through the PHP web interface can use MySQLi extensions. The steps are as follows: 1. Connect to the MySQL database and use the MySQLi extension. 2. Create a user, use the CREATEUSER statement, and use the PASSWORD() function to encrypt the password. 3. Prevent SQL injection and use the mysqli_real_escape_string() function to process user input. 4. Assign permissions to new users and use the GRANT statement.

MySQL'sBLOBissuitableforstoringbinarydatawithinarelationaldatabase,whileNoSQLoptionslikeMongoDB,Redis,andCassandraofferflexible,scalablesolutionsforunstructureddata.BLOBissimplerbutcanslowdownperformancewithlargedata;NoSQLprovidesbetterscalabilityand

ToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith

ToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Linux new version
SublimeText3 Linux latest version

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Notepad++7.3.1
Easy-to-use and free code editor
