markdown/reference/sql/ALTER-CONVERSION.html.md.erb

---
title: ALTER CONVERSION
---

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Changes the definition of a CONVERSION.

## <a id="topic1__section2"></a>Synopsis

``` pre
ALTER CONVERSION <name> RENAME TO <newname>

ALTER CONVERSION <name> OWNER TO <newowner>
```

## <a id="topic1__section3"></a>Description

`ALTER CONVERSION` changes the definition of a conversion. 

You must own the conversion to use `ALTER CONVERSION`. To alter the owner, you must also be a direct or indirect member of the new owning role, and that role must have `CREATE` privilege on the conversion's schema. (These restrictions enforce that altering the owner does not do anything you could not do by dropping and recreating the conversion. However, a superuser can always alter ownership of any conversion.).

## <a id="topic1__section4"></a>Parameters

<dt>\<name\>   </dt>
<dd>The (optionally schema-qualified) name of an existing conversion.</dd>

<dt>\<newname\>  </dt>
<dd>The new name of the conversion.</dd>

<dt>\<newowner\>  </dt>
<dd>The new owner of the conversion.</dd>


## <a id="topic1__section5"></a>Examples

To rename the conversion `iso_8859_1_to_utf8` to `latin1_to_unicode`:

``` pre
ALTER CONVERSION iso_8859_1_to_utf8 RENAME TO 
latin1_to_unicode;
```

To change the owner of the conversion `iso_8859_1_to_utf8` to `joe`:

``` pre
ALTER CONVERSION iso_8859_1_to_utf8 OWNER TO joe;
```

## <a id="topic1__section6"></a>Compatibility

There is no ALTER CONVERSION statement in the SQL standard.

## <a id="topic1__section7"></a>See Also

[CREATE CONVERSION](CREATE-CONVERSION.html), [DROP CONVERSION](DROP-CONVERSION.html)