How do you prevent the auto increment being reset when you delete all the row of a table?

You use TRANCATE table to empty the table. TRUNCATE not only deletes the rows but resets the auto increment value by design. Use DELETE FROM table instead.

How do I reset Autoincrement to 1?

How To Reset MySQL Autoincrement Column

  1. ALTER TABLE table_name AUTO_INCREMENT = 1; Code language: SQL (Structured Query Language) (sql)
  2. TRUNCATE TABLE table_name; Code language: SQL (Structured Query Language) (sql)
  3. DROP TABLE table_name; CREATE TABLE table_name { };

What’s the difference between truncate and delete in SQL?

Delete and truncate both commands can be used to delete data of the table. Delete is a DML command whereas truncate is DDL command. Truncate can be used to delete the entire data of the table without maintaining the integrity of the table. On the other hand , delete statement can be used for deleting the specific data.

How do I change the next Autoindex in MySQL?

In phpMyAdmin, click on the table you want to reset or change the AUTO_INCREMENT value. Click on the Operations Tab. In the Table Options box find the auto_increment field. Enter the new auto_increment starting value.

How do you delete a record from a table in SQL?

SQL DELETE Statement

  1. DELETE FROM table_name WHERE condition;
  2. Example. DELETE FROM Customers WHERE CustomerName=’Alfreds Futterkiste’;
  3. DELETE FROM table_name;
  4. Example. DELETE FROM Customers;

How do you truncate a table in SQL?

To remove all data from an existing table, use the SQL TRUNCATE TABLE order. You can also use the DROP TABLE command to delete an entire table. But Truncate will remove the entire table structure from the database, and you will need to recreate the table if you want to store any data.

Which of the following will be used to reset the auto-increment column value?

Using the ALTER TABLE Statement. The ALTER TABLE statement is used to change the name of a table or any table field. It is also used to add, delete, or reset an existing column in a table. MySQL also allows this statement to reset the auto-increment column value whenever we want.

Why use TRUNCATE instead of delete?

TRUNCATE is faster than DELETE , as it doesn’t scan every record before removing it. TRUNCATE TABLE locks the whole table to remove data from a table; thus, this command also uses less transaction space than DELETE . Unlike DELETE , TRUNCATE does not return the number of rows deleted from the table.

Which one is better TRUNCATE or delete in SQL Server?

Truncate removes all records and doesn’t fire triggers. Truncate is faster compared to delete as it makes less use of the transaction log. Truncate is not possible when a table is referenced by a Foreign Key or tables are used in replication or with indexed views.

How do I reset my identity column?

Here, to reset the Identity column in SQL Server you can use DBCC CHECKIDENT method….So, we need to :

  1. Create a new table as a backup of the main table (i.e. school).
  2. Delete all the data from the main table.
  3. And now reset the identity column.
  4. Re-insert all the data from the backup table to main table.

How can you delete a record?

How can you delete a record?

  1. A. Delete the column from the worksheet.
  2. Select Data > Form from the menu to open the Data Form dialog box, find the record and Click the Delete button.
  3. Select Data > Delete Record from the menu.
  4. Click the Delete button on the Standard toolbar.

What is the delete command in SQL?

The Delete command in SQL is a part of the Data Manipulation Language, a sub-language of SQL that allows modification of data in databases. This command is used to delete existing records from a table. Using this, you can either delete specific records based on a condition or all the records from a table.

Is delete faster than truncate?

What is difference between delete and truncate?