Find indexes that do not support a declarative constraint and that are perhaps badly named. Table names make the names more expressive and user-friendly.
Type
Problem detection (Each row in the result could represent a flaw in the design)
WITH index_names AS (
SELECT
n.nspname AS table_schema,
c2.relname AS table_name,
c.relname AS index_name,
i.indisunique AS is_unique
FROM
pg_catalog.pg_class AS c INNER JOIN pg_catalog.pg_index AS i ON i.indexrelid = c.oid
INNER JOIN pg_catalog.pg_class AS c2 ON i.indrelid = c2.oid
INNER JOIN pg_catalog.pg_namespace AS n ON c.relnamespace = n.oid
INNER JOIN pg_catalog.pg_authid AS u ON n.nspowner = u.oid
INNER JOIN pg_catalog.pg_attribute AS a ON a.attrelid = c.oid
WHERE c.relkind = 'i'
AND a.attnum>=1
AND a.attisdropped = FALSE
AND (n.nspname = 'public'
OR u.rolname <> 'postgres')
AND NOT EXISTS (SELECT * FROM pg_catalog.pg_constraint AS o WHERE o.conindid=i.indexrelid AND o.contype IN ('u','p')))
SELECT table_schema, table_name, index_name, is_unique
FROM index_names
WHERE index_name NOT ILIKE '%' || table_name || '%'
AND translate(index_name,'_','') NOT ILIKE '%' || translate(table_name,'_','') || '%'
ORDER BY is_unique DESC, table_schema, table_name;
Collections
This query belongs to the following collections:
Name
Description
Find problems about names
A selection of queries that return information about the names of database objects. Contains all the types of queries - problem detection, software measure, and general overview.
Find problems automatically
Queries, 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:
Name
Description
Comfortability of database evolution
Queries of this category provide information about the means that influence database evolution.
Naming
Queries of this category provide information about the style of naming.