The list of all the queries

Inconsistent names of database objects that are used to manage the state of main objects in the database

Query goal: "Names in software are 90 percent of what make software readable. You need to take the time to choose them wisely and keep them relevant. Names are too important to treat carelessly. Names should not cause confusion." (Robert C. Martin, Clean Code) The naming must be consistent. One should avoid mixing synonyms like "seisund", "staatus", and "olek" in Estonian or "state" and "status" in English and stick with one term. For instance, it is a bad practice to use word "state" in table names but word "status" in function names.
Notes about the query: If names of different database objects contain more than one of these words - "seisund", "staatus", and "olek" in Estonian or "state" and "status" in English, then present the word and the number of names that contain the word. If the number of names is between 1 and 4, then present also the names. 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. The query uses (b) tags in the result to point to the suspicious parts of the name.
Query type: Problem detection (Each row in the result could represent a flaw in the design)
Query reliability: Medium (Medium number of false-positive results)
Query license: MIT License
Fixing suggestion: Use the same word everywhere to refer to the same concept. Rename database objects.
Data source: INFORMATION_SCHEMA+system catalog
SQL query: Click on query to copy it

WITH named_objects AS (

SELECT 
 n.oid,
 ''::text AS container_name, 
'DATABASE' AS container_type,
n.nspname AS object_name,
'SCHEMA' AS object_type
FROM pg_namespace AS n INNER JOIN pg_authid AS a ON n.nspowner=a.oid
WHERE (n.nspname='public' OR a.rolname<>'postgres')

UNION SELECT 
c.oid,
n.nspname AS container_name, 
'SCHEMA' AS container_type,
c.relname AS object_name,
CASE WHEN c.relkind='r' THEN 'BASE TABLE'
WHEN c.relkind='S' THEN 'SEQUENCE GENERATOR'
WHEN c.relkind='v' THEN 'VIEW'
WHEN c.relkind='m' THEN 'MATERIALIZED VIEW'
WHEN c.relkind='c' THEN 'COMPOSITE TYPE'
WHEN c.relkind='f' THEN 'FOREIGN TABLE'
WHEN c.relkind='p' THEN 'PARTITIONED TABLE'
WHEN c.relkind='I' THEN 'PARTITIONED INDEX'
END AS object_type
FROM pg_namespace AS n INNER JOIN pg_authid AS a ON n.nspowner=a.oid
INNER JOIN pg_class AS c ON n.oid=c.relnamespace
WHERE (n.nspname='public' OR a.rolname<>'postgres')
AND relkind NOT IN ('t','i')

UNION SELECT 
c.oid,
n.nspname AS container_name, 
'SCHEMA' AS container_type,
c.relname AS object_name,
'INDEX' AS object_type
FROM pg_namespace AS n INNER JOIN pg_authid AS a ON n.nspowner=a.oid
INNER JOIN pg_class AS c ON n.oid=c.relnamespace
INNER JOIN pg_index AS i ON i.indexrelid=c.oid
WHERE (n.nspname='public' OR a.rolname<>'postgres')
AND i.indisprimary = FALSE 
AND i.indisexclusion =FALSE

UNION ALL SELECT 
pt.oid,
n.nspname AS container_name, 
'SCHEMA' AS container_type,
pt.typname AS object_name,
CASE WHEN pt.typtype='d' THEN 'DOMAIN'
WHEN pt.typtype='e' THEN 'ENUMERATION TYPE'
WHEN pt.typtype='r' THEN 'RANGE TYPE' END AS object_type
FROM pg_namespace AS n INNER JOIN pg_authid AS a ON n.nspowner=a.oid
INNER JOIN pg_type AS pt ON n.oid=pt.typnamespace
WHERE (n.nspname='public' OR a.rolname<>'postgres')
AND pt.typtype NOT IN ('b','c')

UNION SELECT
o.oid,
n.nspname || '.' || c.relname AS container_name,
CASE WHEN c.relkind='r' THEN 'BASE TABLE'
WHEN c.relkind='v' THEN 'VIEW'
WHEN c.relkind='m' THEN 'MATERIALIZED VIEW'
WHEN c.relkind='f' THEN 'FOREIGN TABLE'
WHEN c.relkind='p' THEN 'PARTITIONED TABLE'
ELSE 'TABLE' END AS container_type,
conname AS object_name,
CASE WHEN o.contype='p' THEN 'PRIMARY KEY'
WHEN o.contype='u' THEN 'UNIQUE'
WHEN o.contype='f' THEN 'FOREIGN KEY'
WHEN o.contype='c' THEN 'TABLE CHECK'
WHEN o.contype='x' THEN 'EXCLUDE'
WHEN o.contype='t' THEN 'CONSTRAINT TRIGGER' END AS object_type
FROM pg_constraint o INNER JOIN pg_class c ON o.conrelid=c.oid
INNER JOIN pg_namespace AS n ON n.oid=c.relnamespace
INNER JOIN pg_authid AS a ON n.nspowner=a.oid
WHERE (nspname='public' OR rolname<>'postgres')

UNION SELECT 
NULL AS oid,
domain_schema || '.' || domain_name  AS container_name,
'DOMAIN' AS container_type,
constraint_name AS object_name, 
'DOMAIN CHECK' AS object_type
FROM INFORMATION_SCHEMA.domain_constraints
INNER JOIN INFORMATION_SCHEMA.check_constraints AS cc USING (constraint_schema, constraint_name)
WHERE domain_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND cc.check_clause NOT LIKE '%IS NOT NULL'

UNION ALL SELECT 
pc.oid,
n.nspname AS container_name, 
'SCHEMA' AS container_type,
pc.proname AS object_name,
CASE WHEN pc.prokind='f' THEN 'FUNCTION'
WHEN pc.prokind='p' THEN 'PROCEDURE'
WHEN pc.prokind='a' THEN 'AGGREGATE FUNCTION'
WHEN pc.prokind='w' THEN 'WINDOW FUNCTION' END AS object_type
FROM pg_namespace AS n INNER JOIN pg_authid AS a ON n.nspowner=a.oid
INNER JOIN pg_proc AS pc ON n.oid=pc.pronamespace
WHERE (nspname='public' OR rolname<>'postgres')

UNION SELECT 
translate(substring(specific_name,'_[0-9]+$'),'_','')::int::oid,
specific_schema || '.' || regexp_replace(specific_name,'_[0-9]*$','') AS container_name, 
'ROUTINE' AS container_type,
parameter_name AS object_name, 
 'PARAMETER' AS object_type
FROM information_schema.parameters
WHERE specific_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL) AND parameter_name IS NOT NULL

UNION SELECT 
tr.oid,
n.nspname || '.' || c.relname AS container_name,
CASE WHEN c.relkind='r' THEN 'BASE TABLE'
WHEN c.relkind='v' THEN 'VIEW'
WHEN c.relkind='m' THEN 'MATERIALIZED VIEW'
WHEN c.relkind='f' THEN 'FOREIGN TABLE'
WHEN c.relkind='p' THEN 'PARTITIONED TABLE'
ELSE 'TABLE' END AS container_type,
tr.tgname AS object_name,
'TRIGGER' AS object_type
FROM pg_trigger tr INNER JOIN pg_class c ON tr.tgrelid=c.oid
INNER JOIN pg_namespace AS n ON n.oid=c.relnamespace
INNER JOIN pg_authid AS a ON n.nspowner=a.oid
WHERE (n.nspname='public' OR a.rolname<>'postgres')
AND tr.tgisinternal='f'
AND tr.tgconstraint=0

UNION SELECT 
NULL AS oid,
schemaname || '.' || tablename AS container_name,
'TABLE' AS container_type,
rulename AS object_name,
'RULE' AS object_type
FROM pg_rules AS r
WHERE r.schemaname NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)

UNION SELECT 
NULL AS oid,
'' AS container_name,
'DATABASE' AS container_type,
evtname AS object_name,
'EVENT TRIGGER' AS object_type
FROM pg_event_trigger 

UNION ALL SELECT 
c.oid,
n.nspname || '.' || c.relname AS container_name,
CASE WHEN c.relkind='r' THEN 'BASE TABLE'
WHEN c.relkind='v' THEN 'VIEW'
WHEN c.relkind='m' THEN 'MATERIALIZED VIEW'
WHEN c.relkind='f' THEN 'FOREIGN TABLE'
WHEN c.relkind='p' THEN 'PARTITIONED TABLE'
ELSE 'TABLE' END AS container_type,
at.attname AS object_name,
'COLUMN' AS object_type
FROM pg_attribute at INNER JOIN pg_class c ON at.attrelid=c.oid
INNER JOIN pg_namespace AS n ON n.oid=c.relnamespace
INNER JOIN pg_authid AS a ON n.nspowner=a.oid
WHERE (nspname='public' OR rolname<>'postgres')
AND c.relkind IN ('r','v','m','f','p')
AND at.attisdropped='f'
AND at.attnum>0

),

named_user_defined_objects AS (
SELECT container_name, container_type, object_name, object_type
FROM named_objects nob
WHERE NOT EXISTS (SELECT 1
FROM pg_catalog.pg_depend d 
WHERE EXISTS (SELECT 1 FROM pg_catalog.pg_extension e WHERE d.refobjid=e.oid) AND
d.objid=nob.oid)
), 
name_fragments_stats AS (
SELECT substring (object_name from '(seisund|staatus|olek|staadium|state|status)') AS name_fragment,
Count(*) AS number_of_names, string_agg(container_type || '.' || container_name || '.' || object_type || '.' || regexp_replace(object_name,'(seisund|staatus|olek|staadium|state|status)','<b>\1</b>','g'),';<br>' ORDER BY object_type, object_name) AS names
FROM named_user_defined_objects
WHERE object_name ~* '(seisund|staatus|olek|staadium|[^^]state(?!(ment|_))|status)'
AND object_name !~* 'aastate'
GROUP BY substring (object_name from '(seisund|staatus|olek|staadium|state|status)')
)
SELECT name_fragment, number_of_names, CASE WHEN number_of_names<5 THEN names END AS names
FROM name_fragments_stats
WHERE (SELECT Count(*) AS cnt FROM name_fragments_stats WHERE number_of_names>0)>1
ORDER BY number_of_names DESC, name_fragment;

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 .
Lexicon bad smells and linguistic antipatternsQueries made to find the occurrences of lexicon bad smells and linguistic antipatterns

Categories where the query belongs to

Category nameCategory description
InconsistenciesQueries of this catergory provide information about inconsistencies of solving the same problem in different places.
NamingQueries of this category provide information about the style of naming.
State machineQueries of this category provide information about registration of states of entities in a database.

Reference materials for further reading

Reference
Smell "Synonyms and similar identifiers": Abebe, S.L., Haiduc, S., Tonella, P. and Marcus, A., 2011, September. The effect of lexicon bad smells on concept location in source code. In 2011 IEEE 11th International Working Conference on Source Code Analysis and Manipulation (pp. 125-134). IEEE.

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