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Technical Articles

Database

phpMyAdmin

How to create a table in phpMyAdmin

OpenphpMyAdminandselectanexistingdatabaseorcreateanewone.2.Enterthetablenameandnumberofcolumns,thenclick“Go”toproceed.3.Defineeachcolumnwithaname,datatype,length,nullsetting,default,andextraoptionslikeAUTO_INCREMENT,ensuringtosetaprimarykey.4.Click“S

Aug 01, 2025 am 05:29 AM

How to delete a database in phpMyAdmin

LogintophpMyAdminusingyourcredentials.2.Selectthetargetdatabasefromtheleft-handsidebar,ensuringit’sthecorrectone.3.Clickthe“Operations”tab,thenscrollto“Dropdatabase(DROP)”andclick“Drop”toconfirmdeletion.4.Alternatively,usetheSQLtabandrunDROPDATABASEy

Aug 01, 2025 am 03:31 AM

How to clear cache in phpMyAdmin

To clear the cache in phpMyAdmin, you need to process the browser, MySQL server and phpMyAdmin's own cache separately: 1. Clear the browser cache and perform hard refresh (Ctrl Shift R or Cmd Shift R); 2. Execute FLUSHTABLES in the SQL tag of phpMyAdmin; and FLUSHSTATUS; (MySQL8.0 does not support query cache); 3. Log out and delete phpMyAdmin related cookies (such as pma_user_config, phpMyAdmin, etc.) and log in again; 4. If you have permission, restart MySQL service (such as sudosystemct

Aug 01, 2025 am 03:20 AM

How to change a column type in phpMyAdmin

To change the column type in phpMyAdmin, you need to be careful to avoid data loss. First, find the target column in the Structure tab, click "Change" to enter the editing page, then select the new data type in the "Type" drop-down menu and adjust the length and other parameters. After confirming that the settings are correct, click "Save" to complete the changes. 1. Open the structure view of the table, 2. Click the "Change" link of the column, 3. Modify the data type and related attributes, 4. Save changes, be sure to back up the data in advance, check the index or foreign key dependencies, and test in the development environment to prevent data truncation or application errors due to type incompatibility.

Jul 31, 2025 am 03:39 AM

How to reset WordPress password using phpMyAdmin

AccessphpMyAdminthroughyourhostingcontrolpanel(e.g.,cPanel)andopenyourWordPressdatabase.2.Locatetheuserstable(typicallywp_users,butprefixmayvary)andclicktoviewitsdata.3.Findyouradminuser,click"Edit",enteranewpasswordintheuser_passfield,sele

Jul 31, 2025 am 02:48 AM

How to check for duplicate entries in phpMyAdmin

To find duplicate entries in phpMyAdmin, first use GROUPBY and HAVINGCOUNT()>1 to query; 1. Determine the columns that check duplicates, such as email; 2. Execute SELECTemail, COUNT() ascountFROMusersGROUPBYemailHAVINGcount>1 to list duplicate values; 3. If you judge duplicates based on multiple columns (such as first_name and last_name), use GROUPBYfirst_name, last_name; 4. For ease of cleaning, you can display duplicate row IDs in combination with subqueries and window functions, such as SELECTid, em

Jul 31, 2025 am 02:39 AM

How do I enable or configure two-factor authentication (2FA) for phpMyAdmin?

Enable two-factor authentication (2FA) for phpMyAdmin can be achieved through three main methods: 1. Use Apache authentication combined with Google Authenticator to add system-level 2FA before accessing the phpMyAdmin login interface; 2. Use third-party plug-ins such as phpmyadmin-two-factor to implement TOTP-based 2FA within phpMyAdmin; 3. Use external authentication methods such as LDAP or Active Directory, and superimpose 2FA on it. Each method requires corresponding configuration, such as installing libpam-google-authenticator and modifying Apache

Jul 31, 2025 am 01:57 AM

Two-factor authentication

How to change database collation in phpMyAdmin

TochangethedatabasecollationinphpMyAdmin,loginandselectyourdatabasefromtheleftpanel.2.Clickthe"Operations"tab,setthedesiredcollation(e.g.,utf8mb4_unicode_ci)intheCollationdropdown,andclick"Go"toupdatethedatabase'sdefaultcollation.

Jul 30, 2025 am 02:45 AM

How to use triggers in phpMyAdmin

TriggersinphpMyAdminautomaticallyexecuteSQLinresponsetoINSERT,UPDATE,orDELETEeventsonatable,eitherBEFOREorAFTERtheevent.2.Tocreateatrigger,selectthetable,gototheTriggerstab,clickAdd,specifythetriggername,time(BEFORE/AFTER),event(INSERT/UPDATE/DELETE)

Jul 30, 2025 am 02:16 AM

trigger

What are the steps to insert a new row of data into a table via phpMyAdmin?

ToinsertanewrowintoatableusingphpMyAdmin,openthetargettable,usetheInserttabtofillinfields,andsubmitthenewrow.1.LogintophpMyAdmin,selectthecorrectdatabase,andclickonthetargettable.2.ClicktheInserttabatthetoptoopenthedataentryform.3.Fillineachfieldwith

Jul 30, 2025 am 12:36 AM

Data insertion

How to backup WordPress database using phpMyAdmin

AccessphpMyAdminviayourhostingcontrolpanel(e.g.,cPanel).2.SelectyourWordPressdatabasebyidentifyingitfromtheleftpanelorcheckingwp-config.php.3.ClickExport,chooseQuickmethod,SQLformat,andgzippedcompressionifneeded,thenclickGotodownloadthebackupfile.4.S

Jul 30, 2025 am 12:16 AM

database backup

How to install phpMyAdmin on Ubuntu

Updatethesystemusingsudoaptupdateandoptionallyupgradepackages.2.InstallphpMyAdminwithsudoaptinstallphpmyadmin,selectingapache2asthewebserverandconfiguringthedatabasewithastrongpassword.3.EnabletheApacherewritemoduleusingsudoa2enmodrewriteandrestartAp

Jul 29, 2025 am 01:49 AM

How to use the designer feature in phpMyAdmin

First, make sure that the Designer function of phpMyAdmin is enabled and the control database and related tables are configured; then enter the design interface by selecting the database and clicking the "Designer" tab, add the required tables to the canvas and adjust the layout; then set foreign key relationships in "Relationview" and select constraint rules; multiple pages can be created to manage complex structures; finally save the layout and edit or delete the relationship by clicking on the link. The InnoDB engine must be used, and the actual foreign key modification must be done in the Relationview. Designer is only used for visualization. This function helps to intuitively manage database relationship structure, especially for team collaboration and architecture review, and requires environmental support for complete use.

Jul 29, 2025 am 01:37 AM

Database Design

How to import a database in phpMyAdmin

LogintophpMyAdminviayourhostingcontrolpanelorlocalserver.2.Optionallycreateanewdatabasebyclicking"Databases",enteringaname,andclicking"Create".3.Selectthetargetdatabasefromtheleft-handsidebar.4.Clickthe"Import"tabattheto

Jul 29, 2025 am 12:33 AM