Postgres dialect no support for DROP SCHEMA or SET SCHEMA: " Found unparsable section"

[jdsada30]

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Expected Behaviour

I would expect SQLFluff to correctly parse and lint statements to set or drop schemas, which is supported, for example, by PostgreSQL. Create schema however seems to be parsed correctly.

Observed Behaviour

"Found unparsable section"

L: 1 | P: 1 | PRS | Found unparsable section: 'DROP SCHEMA vertx'
L: 3 | P: 1 | PRS | Found unparsable section: 'SET SCHEMA vertx'

Steps to Reproduce

1. Create a sql file with the following queries:

$ cat test.sql
DROP SCHEMA vertx;
CREATE SCHEMA vertx;
SET SCHEMA vertx;

2. Lint the file with the following command :

sqlfluff lint test.sql --dialect postgres or sqlfluff lint test.sql

Version

I'm using sqlfluff version 0.5.6 and python version 3.8.5. Found this while executing queries from the following github project: vertx-jooq