Non-updatable views with DO INSTEAD NOTHING rules

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Goal Find non-updatable views that have a DO INSTEAD NOTHING rule. The rule is used to prevent updates. However, the view is aniway non-updatable.
Type Problem detection (Each row in the result could represent a flaw in the design)
Reliability Medium (Medium number of false-positive results)
License MIT License
Fixing Suggestion Drop the rules.
Data Source INFORMATION_SCHEMA+system catalog
SQL Query 
WITH non_updatable_views AS (SELECT table_schema AS schema, table_name AS view
FROM Information_schema.views
WHERE (view_definition~'(JOIN|GROUP BY|HAVING|LIMIT|OFFSET|FETCH FIRST|DISTINCT|WITH|UNION|INTERSECT|EXCEPT)'
OR view_definition~*'(sum|count|avg|min|max|over)[[:space:]]{0,1}[(]')
AND table_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL))
SELECT schemaname, tablename, rulename, definition   
FROM pg_rules
WHERE definition~'ON[[:space:]](INSERT|UPDATE|DELETE).*DO[[:space:]]INSTEAD[[:space:]]NOTHING'
AND (schemaname, tablename) IN (SELECT schema, view
FROM non_updatable_views)
ORDER BY schemaname, tablename, rulename;

SQL statements that help generate fixes for the identified problem.

SQL Query to Generate FixDescription
WITH non_updatable_views AS (SELECT table_schema AS schema, table_name AS view
FROM Information_schema.views
WHERE (view_definition~'(JOIN|GROUP BY|HAVING|LIMIT|OFFSET|FETCH FIRST|DISTINCT|WITH|UNION|INTERSECT|EXCEPT)'
OR view_definition~*'(sum|count|avg|min|max|over)[[:space:]]{0,1}[(]')
AND table_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL))
SELECT format('DROP RULE %1$I ON %2$I.%3$I;', rulename, schemaname, tablename) AS statements
FROM pg_rules
WHERE definition~'ON[[:space:]](INSERT|UPDATE|DELETE).*DO[[:space:]]INSTEAD[[:space:]]NOTHING'
AND (schemaname, tablename) IN (SELECT schema, view
FROM non_updatable_views)
ORDER BY schemaname, tablename, rulename;
Drop the rules.
Collections

This query belongs to the following collections:

NameDescription
Find problems automaticallyQueries, that results point to problems in the database. Each query in the collection produces an initial assessment. However, a human reviewer has the final say as to whether there is a problem or not .
Categories

This query is classified under the following categories:

NameDescription
Derived tablesQueries of this category provide information about the derived tables (views, materialized views), which are used to implement virtual data layer.
Triggers and rulesQueries of this category provide information about triggers and rules in a database.