The list of all the queries

Columns with BOOLEAN type that do not have a good name

Query goal: The phrase "is_" or "has_" or "can_" (in English) or "on_" (in Estonian) should be used in the name - preferably in the beginning. Worse: agreed, kinnitatud. Better: contract_is_agreed, leping_on_kinnitatud. Perhaps the best: is_contract_agreed or is_agreement, on_leping_kinnitatud, on_kinnitatud.
Notes about the query: The query considers all types of tables.
Query type: Problem detection (Each row in the result could represent a flaw in the design)
Query reliability: High (Few or no false-positive results)
Query license: MIT License
Fixing suggestion: Rename the column.
Data source: INFORMATION_SCHEMA+system catalog
SQL query: Click on query to copy it

WITH columns AS (SELECT nspname AS table_schema, relname AS table_name, 
CASE WHEN relkind='r' THEN 'BASE TABLE'
WHEN relkind='v' THEN 'VIEW'
WHEN relkind='m' THEN 'MATERIALIZED VIEW'
WHEN relkind='f' THEN 'FOREIGN TABLE'
WHEN relkind='p' THEN 'PARTITIONED TABLE'
END AS table_type, 
attname AS column_name,
pg_type.typname AS column_type,
domain_type.typname AS column_domain_type
FROM pg_class INNER JOIN pg_namespace ON pg_class.relnamespace=pg_namespace.oid
INNER JOIN pg_attribute ON pg_class.oid=pg_attribute.attrelid
INNER JOIN pg_type ON pg_attribute.atttypid =pg_type.oid
LEFT JOIN pg_type AS domain_type ON domain_type.oid=pg_type.typbasetype
WHERE attnum>=1 
AND relkind IN ('r','v','m','f','p')
AND nspname NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL))
SELECT table_schema, table_name, table_type, column_name, column_type, column_domain_type
FROM columns
WHERE (column_type~*'bool'
OR column_domain_type~*'bool')
AND column_name!~*'(^|[[:alpha:]]_)(is|has|can|on)[_]+'
ORDER BY table_type, table_schema, table_name, column_name;

Collections where the query belongs to

Collection nameCollection description
Find problems about namesA 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 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 where the query belongs to

Category nameCategory description
Boolean dataQueries of this category provide information about truth-values data that is kept in the database.
Comfortability of data managementQueries of this category provide information about the means that have been used to make the use or management of database more comfortable and thus, more efficient.
Data typesQueries of this category provide information about the data types and their usage.
NamingQueries of this category provide information about the style of naming.

Reference materials for further reading

Reference
https://stackoverflow.com/questions/3037188/naming-of-boolean-column-in-database-table

The list of all the queries