---
title: "DROP TRANSFORM"
id: sql-droptransform
pg_version: "20devel"
---

<a id="sql-droptransform"></a>

# DROP TRANSFORM — remove a transform

## Synopsis

```
DROP TRANSFORM [ IF EXISTS ] FOR type_name LANGUAGE lang_name [ CASCADE | RESTRICT ]
```

<a id="sql-droptransform-description"></a>

## Description

`DROP TRANSFORM` removes a previously defined transform. 

To be able to drop a transform, you must own the type and the language. These are the same privileges that are required to create a transform. 

<a id="id-1.9.3.143.6"></a>

## Parameters

**`IF EXISTS`**

 Do not throw an error if the transform does not exist. A notice is issued in this case. **`type_name`**

 The name of the data type of the transform. **`lang_name`**

 The name of the language of the transform. **`CASCADE`**

 Automatically drop objects that depend on the transform, and in turn all objects that depend on those objects (see [Section 5.17](ddl-depend.md)). **`RESTRICT`**

 Refuse to drop the transform if any objects depend on it. This is the default. <a id="sql-droptransform-examples"></a>

## Examples

To drop the transform for type `hstore` and language `plpython3u`: 
DROP TRANSFORM FOR hstore LANGUAGE plpython3u;


<a id="sql-droptransform-compat"></a>

## Compatibility

This form of `DROP TRANSFORM` is a PostgreSQL extension. See [CREATE TRANSFORM](sql-createtransform.md) for details. 

<a id="id-1.9.3.143.9"></a>

## See Also

[CREATE TRANSFORM](sql-createtransform.md)