Use consistent style of naming. Prefer snake_case. Regular identifiers are stored in the PostgreSQL system catalog in lowercase. Thus, if you use, for instance the identifier thisIsLongTableName, then, for instance,in the pg_dump result you will see the table name thisislongtablename. If the name in the system catalog is thisIsLongTableName, then it means that the name is a delimited identifier, i.e., case sensitive.
Notes
The query does not consider objects that are a part of an extension. The query excludes cases where the first letter of the name is in uppercase and the second is in lowercase.
Type
Problem detection (Each row in the result could represent a flaw in the design)
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)
)
SELECT container_name, container_type, object_name, object_type
FROM named_user_defined_objects
WHERE object_name~'((?
Collections
This query belongs to the following collections:
Name
Description
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 .
Lexicon bad smells and linguistic antipatterns
Queries made to find the occurrences of lexicon bad smells and linguistic antipatterns
Categories
This query is classified under the following categories:
Name
Description
Case sensitivity vs. case insensitivity
Queries of this category provide information about case sensitivity/insensitivity of identifiers or user data.
Inconsistencies
Queries of this catergory provide information about inconsistencies of solving the same problem in different places.
Naming
Queries of this category provide information about the style of naming.
Smell "Identifier construction rules": 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.