| --- |
| layout: global |
| title: DROP TABLE |
| displayTitle: DROP TABLE |
| license: | |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --- |
| |
| ### Description |
| |
| `DROP TABLE` deletes the table and removes the directory associated with the table from the file system |
| if the table is not `EXTERNAL` table. If the table is not present it throws an exception. |
| |
| In case of an external table, only the associated metadata information is removed from the metastore database. |
| |
| ### Syntax |
| {% highlight sql %} |
| DROP TABLE [ IF EXISTS ] table_identifier |
| {% endhighlight %} |
| |
| ### Parameter |
| <dl> |
| <dt><code><em>IF EXISTS</em></code></dt> |
| <dd> |
| If specified, no exception is thrown when the table does not exists. |
| </dd> |
| <dt><code><em>table_identifier</em></code></dt> |
| <dd> |
| Specifies the table name to be dropped. The table name may be optionally qualified with a database name.<br><br> |
| <b>Syntax:</b> |
| <code> |
| [ database_name. ] table_name |
| </code> |
| </dd> |
| </dl> |
| |
| ### Example |
| {% highlight sql %} |
| -- Assumes a table named `employeetable` exists. |
| DROP TABLE employeetable; |
| +---------+--+ |
| | Result | |
| +---------+--+ |
| +---------+--+ |
| |
| -- Assumes a table named `employeetable` exists in the `userdb` database |
| DROP TABLE userdb.employeetable; |
| +---------+--+ |
| | Result | |
| +---------+--+ |
| +---------+--+ |
| |
| -- Assumes a table named `employeetable` does not exists. |
| -- Throws exception |
| DROP TABLE employeetable; |
| Error: org.apache.spark.sql.AnalysisException: Table or view not found: employeetable; |
| (state=,code=0) |
| |
| -- Assumes a table named `employeetable` does not exists,Try with IF EXISTS |
| -- this time it will not throw exception |
| DROP TABLE IF EXISTS employeetable; |
| +---------+--+ |
| | Result | |
| +---------+--+ |
| +---------+--+ |
| |
| {% endhighlight %} |
| |
| ### Related Statements |
| - [CREATE TABLE](sql-ref-syntax-ddl-create-table.html) |
| - [CREATE DATABASE](sql-ref-syntax-ddl-create-database.html) |
| - [DROP DATABASE](sql-ref-syntax-ddl-drop-database.html) |
| |
| |