Make sure that you use a correct function and that you are consistent.
Data Source
INFORMATION_SCHEMA+system catalog
SQL Query
WITH expressions AS (select
n.nspname as schema,
c.relname || '.' || o.conname as name,
substring(pg_get_constraintdef(o.oid),7) as expression,
'TABLE CHECK' AS type
from pg_constraint o inner join pg_class c on c.oid = o.conrelid
inner join pg_namespace n on n.oid=c.relnamespace
where o.contype ='c'
and n.nspname 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 n.nspname as schema,
t.typname || '.' || o.conname as name,
substring(pg_get_constraintdef(o.oid),7) as expression,
'DOMAIN CHECK' AS type
from pg_constraint o inner join pg_type t on t.oid = o.contypid
inner join pg_namespace n on n.oid=t.typnamespace
where o.contype ='c' and n.nspname 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 c.table_schema, c.table_name || '.' || c.column_name AS name, coalesce(c.column_default, domain_default) AS default_value,
CASE WHEN c.column_default IS NOT NULL THEN 'COLUMN DEFAULT' ELSE 'DOMAIN DEFAULT' END AS type
FROM information_schema.columns AS c LEFT JOIN information_schema.domains d USING (domain_schema, domain_name)
INNER JOIN INFORMATION_SCHEMA.tables AS t USING (table_schema, table_name)
WHERE c.table_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 (column_default IS NOT NULL OR domain_default IS NOT NULL)
UNION SELECT trigger_schema, event_object_table || '.' || trigger_name, action_condition, 'TRIGGER WHEN' AS type
FROM INFORMATION_SCHEMA.triggers
WHERE action_condition IS NOT NULL
UNION SELECT schemaname, tablename || '.' || rulename, definition, 'RULE WHERE' AS type
FROM pg_catalog.pg_rules
WHERE 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 table_schema, table_name, view_definition, type
FROM (SELECT table_schema, table_name, regexp_replace(view_definition,'[\r\n]',' ','g') AS view_definition, 'VIEW SUBQUERY' AS type
FROM information_schema.views
WHERE table_schema 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 schemaname, matviewname, regexp_replace(definition,'[\r\n]',' ','g') AS definition, 'MATERIALIZED VIEW SUBQUERY' AS type
FROM pg_catalog.pg_matviews) AS foo
WHERE view_definition ~*'^.+([[:space:]]+where[[:space:]]+|[[:space:]]+having[[:space:]]+).+$'
UNION SELECT pg_namespace.nspname AS routine_schema, pg_proc.proname || '(' || pg_get_function_identity_arguments(pg_proc.oid) || ')' AS routine_name, regexp_replace(pg_get_functiondef(pg_proc.oid),'[\r\n]',' ','g') AS routine_src, 'ROUTINE' AS type
FROM pg_catalog.pg_proc, pg_catalog.pg_namespace
WHERE pg_proc.pronamespace = pg_namespace.oid
AND pg_proc.prokind<>'a'
AND pg_proc.proname NOT IN ('f_assume_you_must_use_files', 'f_check_format_comma_separated_list', 'f_check_password', 'f_default_value_with_no_match')
AND pg_namespace.nspname NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND 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=pg_proc.oid)),
temp_functions AS (SELECT schema, name AS object_identifier, type AS object_type, expression AS suspected_expression, 'now' AS description
FROM expressions
WHERE expression~*'now[[:space:]]*[(][)]'
UNION SELECT schema, name AS object_identifier, type AS object_type, expression AS suspected_expression, 'localtimestamp' AS description
FROM expressions
WHERE expression~*'localtimestamp'
UNION SELECT schema, name AS object_identifier, type AS object_type, expression AS suspected_expression, 'current_timestamp' AS description
FROM expressions
WHERE expression~*'current_timestamp')
SELECT *
FROM temp_functions
WHERE (SELECT Count(DISTINCT description) AS cnt FROM temp_functions)>1
ORDER BY description, schema, object_identifier;
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 .
Categories
This query is classified under the following categories:
Name
Description
CHECK constraints
Queries of this category provide information about CHECK constraints.
Default value
Queries of this catergory provide information about the use of default values.
Derived tables
Queries of this category provide information about the derived tables (views, materialized views), which are used to implement virtual data layer.
Inconsistencies
Queries of this catergory provide information about inconsistencies of solving the same problem in different places.
Triggers and rules
Queries of this category provide information about triggers and rules in a database.
User-defined routines
Queries of this category provide information about the user-defined routines