Clear all cached schema information when using Database#drop_schema on PostgreSQL

Author: jeremyevans

CHANGELOG

@@ -1,5 +1,7 @@
 === master
 
+* Clear all cached schema information when using Database#drop_schema on PostgreSQL (jeremyevans)
+
 * Add Database#rename_schema on PostgreSQL (jeremyevans)
 
 === 5.96.0 (2025-09-01)

lib/sequel/adapters/shared/postgres.rb

@@ -571,6 +571,7 @@ def drop_language(name, opts=OPTS)
  # :if_exists :: Don't raise an error if the schema doesn't exist.
  def drop_schema(name, opts=OPTS)
  self << drop_schema_sql(name, opts)
+ remove_all_cached_schemas
  end
 
  # Drops a trigger from the database. Arguments:

spec/adapters/postgres_spec.rb

@@ -2824,13 +2824,18 @@ def @Member.name; :Member; end
  end
 
  it "#create_schema and #drop_schema should create and drop schemas" do
- @d.create_schema(:sequel)
- @d.create_schema(:sequel, :if_not_exists=>true) if @d.server_version >= 90300
- @d.create_table(Sequel[:sequel][:test]){Integer :a}
- @d.tables(:schema=>:sequel).must_equal [:test]
- @d.tables(:schema=>'sequel').must_equal [:test]
- @d.tables(:schema=>Sequel[:sequel]).must_equal [:test]
- @d.drop_schema(:sequel, :if_exists=>true, :cascade=>true)
+ begin
+ @d.create_schema(:sequel)
+ @d.create_schema(:sequel, :if_not_exists=>true) if @d.server_version >= 90300
+ @d.create_table(Sequel[:sequel][:test]){Integer :a}
+ @d.tables(:schema=>:sequel).must_equal [:test]
+ @d.tables(:schema=>'sequel').must_equal [:test]
+ @d.tables(:schema=>Sequel[:sequel]).must_equal [:test]
+ @d.schema(Sequel[:sequel][:test]).map(&:first).must_equal [:a]
+ ensure
+ @d.drop_schema(:sequel, :if_exists=>true, :cascade=>true)
+ proc{@d.schema(Sequel[:sequel][:test])}.must_raise Sequel::DatabaseError
+ end
  end
 
  it "#rename_schema should rename schema" do