How do I overwrite an existing MySQL database?

How do I overwrite in MySQL?

If you want to OVERWRITE always, (not update, just overwrite) you can use REPLACE instead of INSERT . WARNING: DO NOT use REPLACE if there are other tables with foreign key indexes referring to the table you are updating.

How do I clear an existing database?

Using phpMyAdmin

Click Check All to select all tables. Click the box With selected: and choose Drop. This will execute the DROP TABLE SQL query on all tables and once you confirm that you wish to proceed the database will be emptied.

How do you clear a MySQL database?

How to empty a MySQL database

  1. Go to cPanel >> Databases section >> phpMyAdmin menu. …
  2. Select the database you wish to empty. …
  3. Tick Check All to select all tables and choose the Drop option from the With selected drop-down list:
  4. This will execute the DROP TABLE SQL query to empty all the tables at once.

How do I add an existing database to MySQL?

How to import a MySQL database

  1. Log in to cPanel. …
  2. In the DATABASES section of the cPanel home screen, click phpMyAdmin: …
  3. In the left pane of the phpMyAdmin page, click the database that you want to import the data into.
  4. Click the Import tab.
  5. Under File to Import, click Browse, and then select the dbexport. …
  6. Click Go.
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How do you overwrite in SQL?

overwrite table with data from another table – SQL

  1. Use select * INTO D1.dbo.T1 FROM D2.dbo.T1.
  2. Then refreshed D1 from prod.
  3. Then truncate T1 with the following step: SELECT COUNT(*) AS BeforeTruncateCount FROM T1; GO TRUNCATE TABLE T1; GO SELECT COUNT(*) AS AfterTruncateCount FROM T1; GO.

Does SQL insert overwrite?

The INSERT OVERWRITE statement overwrites the existing data in the table using the new values. The inserted rows can be specified by value expressions or result from a query.

How do I rename a MySQL database?

Rename a MySQL Database Using cPanel

  1. Log in to cPanel.
  2. In the Databases section, click MySQL Databases.
  3. A new page will open. Scroll down to the database you want to rename and select the Rename link under the Actions column.
  4. Type the new database name, then click Proceed.

How do I delete a MySQL user?

You can use the DROP USER statement to drop multiple users by comma separating the users that you wish to drop. For example: DROP USER ‘smithj’@’localhost’, ‘andersonk’@’localhost’; This DROP USER example would drop two users in MySQL – smithj and andersonk.

How do I reset MySQL to default settings?

Access to the Linux server running MySQL or MariaDB with a sudo user.

  1. Step 1 — Identifying the Database Version. …
  2. Step 2 — Stopping the Database Server. …
  3. Step 3 — Restarting the Database Server Without Permission Checking. …
  4. Step 4 — Changing the Root Password. …
  5. Step 5 — Restart the Database Server Normally.

Which of the following is used to delete an entire MySQL database?

Explanation: The ‘TRUNCATE’ keyword in MySQL is used to delete all the rows from the table and also free the space containing the table.

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How do I permanently delete a table in MySQL?

To permanently remove a table, enter the following statement within the MySQL shell: DROP TABLE table1; Replace table1 with the name of the table you want to delete. The output confirms that the table has been removed.

How do I open an existing MySQL database?

To access a specific database, type the following command at the mysql> prompt, replacing dbname with the name of the database that you want to access: use dbname; Make sure you do not forget the semicolon at the end of the statement. After you access a database, you can run SQL queries, list tables, and so on.

How do I restore a MySQL database?

Restore a MySQL Database from backed up Program Files

  1. Stop MySQL Service. This is required in order to add to the data folders.
  2. Copy database folder into new MySQLdata folder. …
  3. Restart MySQL Service. …
  4. Check & Repair all database tables. …
  5. Backup & Restore to new production server.