How to reseed an an auto increment column in a SQLite database?

sql tsql sqlite identity-column
Mun picture Mun · Jun 26, 2010 · Viewed 7.2k times · Source

Is it possible to reseed an auto increment column in a SQLite database, and if so, how is this done?

ie. The equivalent of DBCC CHECKIDENT ('MyTable', RESEED, 1) in SQL Server.

Answer

Garett picture Garett · Jun 26, 2010

In SQLite there is a table named SQLITE_SEQUENCE, which tracks the largest RowId value that a table has. You can do insert, updates and deletes on this table. For example, to mimic similar functionality as the TRUNCATE TABLE statement SQL Server you could something like:

DELETE FROM MyTableName;
DELETE FROM SQLITE_SEQUENCE WHERE NAME = 'MyTableName';

In the above example all data from MyTableName is removed, and the auto increment rowid is reset by removing the value from the SQLITE_SEQUENCE table. See the documentation for AUTOINCREMENT for more information.

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