How Do I Reset a PostgreSQL Auto-Increment Sequence to a Specific Value?

Resetting PostgreSQL's Auto-Increment Sequence

Maintaining database integrity often requires resetting auto-increment sequences. This is particularly useful for ensuring data consistency or managing table records effectively.

You encountered an error trying to reset your "product" table's auto-increment field to 1453 because the sequence name was incorrect.

PostgreSQL uses sequences to manage auto-increment values. The standard naming convention is tablename_column_seq. Therefore, for a "product" table with an auto-increment column named "id", the correct sequence name is "product_id_seq".

To reset the sequence to 1453, use this command:

<code class="language-sql">ALTER SEQUENCE product_id_seq RESTART WITH 1453;</code>

This sets the next value of the "product_id_seq" sequence to 1453. Subsequently, new rows inserted into the "product" table will have "id" values starting from 1453.

To find your sequences, use the ds command within psql. Alternatively, use d tablename to examine the table definition and locate the sequence associated with the auto-increment column's default constraint.

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