docs/sql-ref-syntax-ddl-usedb.md

---
layout: global
title: USE Database
displayTitle: USE Database
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  this work for additional information regarding copyright ownership.
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---

### Description

`USE` statement is used to set the current database. After the current database is set,
the unqualified database artifacts such as tables, functions and views that are 
referenced by SQLs are resolved from the current database. 
The default database name is 'default'.

### Syntax

```sql
USE database_name
```

### Parameter

* **database_name**

    Name of the database will be used. If the database does not exist, an exception will be thrown.

### Examples

```sql
-- Use the 'userdb' which exists.
USE userdb;

-- Use the 'userdb1' which doesn't exist
USE userdb1;
Error: org.apache.spark.sql.catalyst.analysis.NoSuchDatabaseException: Database 'userdb1' not found;
(state=,code=0)
```

### Related Statements

* [CREATE DATABASE](sql-ref-syntax-ddl-create-database.html)
* [DROP DATABASE](sql-ref-syntax-ddl-drop-database.html)
* [CREATE TABLE ](sql-ref-syntax-ddl-create-table.html)