DROP OPERATOR CLASS
remove an operator class
English manual coverage begins with PostgreSQL 6.4. Source history and runtime observations have their own recorded version boundaries.
Reading PG 18·Select a recorded version
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- SQL-DROPOPCLASS
- file
- sql-dropopclass.html
- lang
- en
- name
- DROP OPERATOR CLASS
- purpose
- remove an operator class
- purpose zh
- 移除一个操作符类
- sections same as
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- slug
- 18
- synopsis html
- DROP OPERATOR CLASS [ IF EXISTS ] <em class="replaceable"><code>name</code></em> USING <em class="replaceable"><code>index_method</code></em> [ CASCADE | RESTRICT ]
- synopsis text
- DROP OPERATOR CLASS [ IF EXISTS ] name USING index_method [ CASCADE | RESTRICT ]
Syntax
DROP OPERATOR CLASS [ IF EXISTS ] name USING index_method [ CASCADE | RESTRICT ]Syntax diagrams
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Definition PG 18
DROP OPERATOR CLASS [ IF EXISTS ] name USING index_method [ CASCADE | RESTRICT ]
Description
DROP OPERATOR CLASS drops an existing operator class. To execute this command you must be the owner of the operator class.
DROP OPERATOR CLASS does not drop any of the operators or functions referenced by the class. If there are any indexes depending on the operator class, you will need to specify CASCADE for the drop to complete.
Parameters
IF EXISTSDo not throw an error if the operator class does not exist. A notice is issued in this case.
nameThe name (optionally schema-qualified) of an existing operator class.
index_methodThe name of the index access method the operator class is for.
CASCADEAutomatically drop objects that depend on the operator class (such as indexes), and in turn all objects that depend on those objects (see Section 5.15).
RESTRICTRefuse to drop the operator class if any objects depend on it. This is the default.
Notes
DROP OPERATOR CLASS will not drop the operator family containing the class, even if there is nothing else left in the family (in particular, in the case where the family was implicitly created by CREATE OPERATOR CLASS). An empty operator family is harmless, but for the sake of tidiness you might wish to remove the family with DROP OPERATOR FAMILY; or perhaps better, use DROP OPERATOR FAMILY in the first place.
Examples
Remove the B-tree operator class widget_ops:
DROP OPERATOR CLASS widget_ops USING btree;
This command will not succeed if there are any existing indexes that use the operator class. Add CASCADE to drop such indexes along with the operator class.
Compatibility
There is no DROP OPERATOR CLASS statement in the SQL standard.
See Also
ALTER OPERATOR CLASS, CREATE OPERATOR CLASS, DROP OPERATOR FAMILYCompare versions
Source references
Full definition and evidence JSON
Definition sources
center · PostgreSQL 18 · wiki-repair-20261023:e9af74315ab4983d73caf60beb3a1652aff364fd0846bb7fc01b71a6210a693b
Text language: en · wiki-repair-20261023:e9af74315ab4983d73caf60beb3a1652aff364fd0846bb7fc01b71a6210a693b