# `DROP SEQUENCE`
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`DROP SEQUENCE` — remove a sequence.

## Supported syntax
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```
DROP SEQUENCE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
```

## Description
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`DROP SEQUENCE` removes sequence number generators. A sequence can only be dropped by its owner or a superuser.

## Parameters
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**`IF EXISTS`**  
Do not throw an error if the sequence does not exist. A notice is issued in this case.

***name***  
The name (optionally schema-qualified) of a sequence.

**`CASCADE`**  
Automatically drop objects that depend on the sequence, and in turn all objects that depend on those objects.

**`RESTRICT`**  
Refuse to drop the sequence if any objects depend on it. This is the default.

## Examples
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To remove the sequence `seq`:

```
DROP SEQUENCE seq;
```

## Compatibility
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`DROP SEQUENCE` conforms to the SQL standard, except that the standard only allows one sequence to be dropped per command, and apart from the `IF EXISTS` option, which is a PostgreSQL extension.