| --- |
| title: DROP TABLE |
| --- |
| |
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| |
| Removes a table. |
| |
| ## <a id="topic1__section2"></a>Synopsis |
| |
| ``` pre |
| DROP TABLE [IF EXISTS] <name> [, ...] [CASCADE | RESTRICT] |
| ``` |
| |
| ## <a id="topic1__section3"></a>Description |
| |
| `DROP TABLE` removes tables from the database. Only its owner may drop a table. To empty a table of rows without removing the table definition, use `TRUNCATE`. |
| |
| `DROP TABLE` always removes any indexes, rules, and constraints that exist for the target table. However, to drop a table that is referenced by a view, `CASCADE` must be specified. `CASCADE` will remove a dependent view entirely. |
| |
| ## <a id="topic1__section4"></a>Parameters |
| |
| <dt>IF EXISTS </dt> |
| <dd>Do not throw an error if the table does not exist. A notice is issued in this case.</dd> |
| |
| <dt>\<name\> </dt> |
| <dd>The name (optionally schema-qualified) of the table to remove.</dd> |
| |
| <dt>CASCADE </dt> |
| <dd>Automatically drop objects that depend on the table (such as views).</dd> |
| |
| <dt>RESTRICT </dt> |
| <dd>Refuse to drop the table if any objects depend on it. This is the default.</dd> |
| |
| ## <a id="topic1__section5"></a>Examples |
| |
| Remove the table `mytable`: |
| |
| ``` pre |
| DROP TABLE mytable; |
| ``` |
| |
| ## <a id="topic1__section6"></a>Compatibility |
| |
| `DROP TABLE` is fully conforming with the SQL standard, except that the standard only allows one table to be dropped per command. Also, the `IF EXISTS` option is a HAWQ extension. |
| |
| ## <a id="topic1__section7"></a>See Also |
| |
| [CREATE TABLE](CREATE-TABLE.html), [ALTER TABLE](ALTER-TABLE.html), [TRUNCATE](TRUNCATE.html) |