# mysql\_errno

## Syntax

```c
unsigned int mysql_errno(MYSQL * mysql);
```

* `mysql` - a mysql handle, which was previously allocated by [mysql\_init()](/docs/connectors/mariadb-connector-c/api-functions/mysql_init.md) or [mysql\_real\_connect()](/docs/connectors/mariadb-connector-c/api-functions/mysql_real_connect.md).

## Description

Returns the last [error code](/docs/server/reference/error-codes.md) for the most recent function call that can succeed or fail. Zero means no error occurred.

{% hint style="info" %}
Client error messages are listed in errmsg.h header file, server error messages are listed in mysqld\_error.h header file of the server source distribution.
{% endhint %}

## See also

* [mysql\_error()](/docs/connectors/mariadb-connector-c/api-functions/mysql_error.md)
* [mysql\_sqlstate()](/docs/connectors/mariadb-connector-c/api-functions/mysql_sqlstate.md)

{% @marketo/form formId="4316" %}


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