Goal Find rule names that are used in a database in more than one schema. Different things should have different names. But here different rules have the same name. Also make sure that this is not a duplication.
Notes In case of the string_agg function, the line break (br) tag is used as a part of the separator for the better readability in case the query result is displayed in a web browser.
Type General (Overview of some aspect of the database.)
License MIT License
Data Source system catalog only
SQL Query
SELECT rulename, Count(*) AS number_of_occurrences, Count(DISTINCT schemaname) AS number_of_different_schemas, string_agg(schemaname || '.' || tablename, ';
' ORDER BY schemaname, tablename) AS tables FROM pg_rules GROUP BY rulename HAVING Count(*)>1 AND Count(DISTINCT schemaname)>1 ORDER BY Count(*) DESC, rulename;
Collections

This query belongs to the following collections:

NameDescription
Find problems by overviewQueries that results point to different aspects of database that might have problems. A human reviewer has to decide based on the results as to whether there are problems or not .
Categories

This query is classified under the following categories:

NameDescription
Comfortability of database evolutionQueries of this category provide information about the means that influence database evolution.
DomainsQueries of this category provide information about reusable specifications of column properties.
NamingQueries of this category provide information about the style of naming.
Triggers and rulesQueries of this category provide information about triggers and rules in a database.