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Documentation
/ SQL
/ Statements
Drop Statement
The DROP
statement removes a catalog entry added previously with the CREATE
command.
Examples
-- delete the table with the name "tbl"
DROP TABLE tbl;
-- drop the view with the name "v1"; do not throw an error if the view does not exist
DROP VIEW IF EXISTS v1;
Syntax
The optional IF EXISTS
clause suppresses the error that would normally result if the table does not exist.
By default (or if the RESTRICT
clause is provided), the entry will not be dropped if there are any other objects that depend on it. If the CASCADE
clause is provided then all the objects that are dependent on the object will be dropped as well.
CREATE SCHEMA myschema;
CREATE TABLE myschema.t1(i INTEGER);
-- ERROR: Cannot drop myschema because the table myschema.t1 depends on it.
DROP SCHEMA myschema;
-- Cascade drops both myschema and myschema.t1
DROP SCHEMA myschema CASCADE;