Resetting the primary key to 1 after deleting all the data

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So i have MySql and i have a table user with a user_id column and it is the primary key and auto incremented. Now when i delete all my data from the table and add the new one, the user_id does not start from 1 but from the number it had before deletion. What if i want to reset it without dropping the whole table and creating it again.

ALTER TABLE some_table AUTO_INCREMENT=1

So some_table would be the table you want to alter.

You could also use:

TRUNCATE TABLE some_table

This will reset the Auto Increment on the table as well as deleting all records from that table.

Reset the primary key to 1 after deleting all the data in MySQL?, Reset the primary key to 1 after deleting all the data in MySQL? alter table yourTableName AUTO_INCREMENT=1; truncate table yourTableName; After doing the above two steps, you will get the primary key beginning from 1. how to Resetting the primary key to 1 after deleting all the data You could drop the primary key column and re-create it. All the ids will then be reassigned, I assume in the order in which the rows were inserted.

The code below is best if you have some data in the database already but want to reset the user_id to 1 without deleting the data. Copy and run in SQL command

ALTER TABLE members DROP user_id;
ALTER TABLE members AUTO_INCREMENT = 1;
ALTER TABLE members ADD user_id int UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST;

MySQL Reset Auto Increment Values, Typically, you use the AUTO_INCREMENT attribute for the primary key We have three rows with values of ID column are 1, 2, and 3. You specify the table name after the ALTER TABLE clause and the value which you want to reset to in the you delete all data from the table permanently and reset the auto-increment � By using the TRUNCATE TABLE statement, you delete all data from the table permanently and reset the auto-increment value to zero. Using DROP TABLE and CREATE TABLE statements. You can use a pair of statements: DROP TABLE and CREATE TABLE to reset the auto-increment column. Note that this method delete all data from the table permanently.

you can use DBCC check identity to reset your Primary key. here is the Sytax:

DBCC CHECKIDENT(TableName,RESEED,0)

Reset auto increment after deleting a table row / BeFused, This simply means that the next insert into the table will have an ID that is one more then the previous one and therefore all ID's will be unique. However, if you � I created a database table in VB.NET 2005 Express. I defined the primary key and set it to autoincrement for each record. I deleted all the data in the table and reloaded it with revised data. The primary key did not reset back to 1 for the new data. How can I force the Primary Key ID to reset back to 0 so the new data items start at 1 again?

How to set Auto Increment to one 1 even after deleting records in , 2)Select your database. 3)Open your Table whose id you want to reset. 4)Click on Select top Duration: 3:38 Posted: Feb 2, 2019 Reset auto increment after deleting a table row. It is often the case that a column such as the ID column on a table will auto increment. This simply means that the next insert into the table will have an ID that is one more then the previous one and therefore all ID's will be unique.

How to Reset the Primary Key Counter - MSDN, I deleted all the data in the table and reloaded it with revised data. The primary key did not reset back to 1 for the new data. How can I force the� i deleted all the testing data in the table. while im deleting the autonumber was 1027 after deleting the data completely from the table. i tried to insert a new record. the autonumber is coming 1028 i dont want 1028 i want to start from 1(ie. from beginning). so how can i reset this. thanks

DBCC CHECKIDENT (Transact-SQL), -If a PRIMARY KEY or UNIQUE constraint exists on the identity The following table lists conditions when DBCC CHECKIDENT doesn't automatically reset the When the table contains data, the identity numbers are added to the in the ErrorLog table to a value of 1, after deleting all records from table. Pinal Dave is a SQL Server Performance Tuning Expert and an independent consultant. He has authored 12 SQL Server database books, 33 Pluralsight courses and has written over 5100 articles on the database technology on his blog at a https://blog.sqlauthority.com. Along with 17+ years of hands-on experience, he holds a Masters of Science degree and a number of database certifications.

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