Perhaps default value 'infinity' is missing

Query goal:

Find optional base table columns that have a timestamp type and do not have a default value.

Query type:

Problem detection (Each row in the result could represent a flaw in the design)

Query reliability:

Low (Many false-positive results)

Query license:

MIT License

Fixing suggestion:

Add default value 'infinity' to the column and declare the column mandatory. If the column is specified by using a domain, then add the default value and NOT NULL constraint to the domain.

Data source:

INFORMATION_SCHEMA only

SQL query:

Click on query to copy it

SELECT A.table_schema, A.table_name , A.column_name, A.data_type
FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name)
INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name
LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name)
WHERE is_nullable='YES' AND T.table_type='BASE TABLE'
AND (A.data_type IN ('timestamp without time zone','timestamp with time zone'))
AND coalesce(column_default, domain_default) IS NOT NULL
AND (A.table_schema = 'public'
OR S.schema_owner<>'postgres')
ORDER BY A.table_schema, A.table_name, A.ordinal_position;

SQL statements for generating SQL statements that help us to fix the problem

SQL query	Description
SELECT format('ALTER TABLE %1$I.%2$I ALTER COLUMN %3$I SET DEFAULT ''infinity'';', A.table_schema, A.table_name , A.column_name) AS statements FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name) INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name) WHERE is_nullable='YES' AND T.table_type='BASE TABLE' AND (A.data_type IN ('timestamp without time zone','timestamp with time zone')) AND coalesce(column_default, domain_default) IS NOT NULL AND domain_name IS NULL AND (A.table_schema = 'public' OR S.schema_owner<>'postgres') ORDER BY A.table_schema, A.table_name, A.ordinal_position;	Declare default value to the column.
SELECT format('ALTER TABLE %1$I.%2$I ALTER COLUMN %3$I SET NOT NULL;', A.table_schema, A.table_name , A.column_name) AS statements FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name) INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name) WHERE is_nullable='YES' AND T.table_type='BASE TABLE' AND (A.data_type IN ('timestamp without time zone','timestamp with time zone')) AND coalesce(column_default, domain_default) IS NOT NULL AND domain_name IS NULL AND (A.table_schema = 'public' OR S.schema_owner<>'postgres') ORDER BY A.table_schema, A.table_name, A.ordinal_position;	Add NOT NULL constraint to the column.
SELECT format('ALTER DOMAIN %1$I.%2$I SET DEFAULT ''infinity'';', A.domain_schema, A.domain_name) AS statements FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name) INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name) WHERE is_nullable='YES' AND T.table_type='BASE TABLE' AND (A.data_type IN ('timestamp without time zone','timestamp with time zone')) AND coalesce(column_default, domain_default) IS NOT NULL AND domain_name IS NOT NULL AND (A.table_schema = 'public' OR S.schema_owner<>'postgres') ORDER BY A.domain_schema, A.domain_name;	Declare default value to the domain.
SELECT format('ALTER DOMAIN %1$I.%2$I SET NOT NULL;', A.domain_schema, A.domain_name) AS statements FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name) INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name) WHERE is_nullable='YES' AND T.table_type='BASE TABLE' AND (A.data_type IN ('timestamp without time zone','timestamp with time zone')) AND coalesce(column_default, domain_default) IS NOT NULL AND domain_name IS NOT NULL AND (A.table_schema = 'public' OR S.schema_owner<>'postgres') ORDER BY A.domain_schema, A.domain_name;	Add NOT NULL constraint to the domain.

SQL query

Description

SELECT format('ALTER TABLE %1$I.%2$I ALTER COLUMN %3$I SET DEFAULT ''infinity'';', A.table_schema, A.table_name , A.column_name) AS statements
FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name)
INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name
LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name)
WHERE is_nullable='YES' AND T.table_type='BASE TABLE'
AND (A.data_type IN ('timestamp without time zone','timestamp with time zone'))
AND coalesce(column_default, domain_default) IS NOT NULL
AND domain_name IS NULL
AND (A.table_schema = 'public'
OR S.schema_owner<>'postgres')
ORDER BY A.table_schema, A.table_name, A.ordinal_position;

Declare default value to the column.

SELECT format('ALTER TABLE %1$I.%2$I ALTER COLUMN %3$I SET NOT NULL;', A.table_schema, A.table_name , A.column_name) AS statements
FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name)
INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name
LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name)
WHERE is_nullable='YES' AND T.table_type='BASE TABLE'
AND (A.data_type IN ('timestamp without time zone','timestamp with time zone'))
AND coalesce(column_default, domain_default) IS NOT NULL
AND domain_name IS NULL
AND (A.table_schema = 'public'
OR S.schema_owner<>'postgres')
ORDER BY A.table_schema, A.table_name, A.ordinal_position;

Add NOT NULL constraint to the column.

SELECT format('ALTER DOMAIN %1$I.%2$I SET DEFAULT ''infinity'';', A.domain_schema, A.domain_name) AS statements
FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name)
INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name
LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name)
WHERE is_nullable='YES' AND T.table_type='BASE TABLE'
AND (A.data_type IN ('timestamp without time zone','timestamp with time zone'))
AND coalesce(column_default, domain_default) IS NOT NULL
AND domain_name IS NOT NULL
AND (A.table_schema = 'public'
OR S.schema_owner<>'postgres')
ORDER BY A.domain_schema, A.domain_name;

Declare default value to the domain.

SELECT format('ALTER DOMAIN %1$I.%2$I SET NOT NULL;',  A.domain_schema, A.domain_name) AS statements
FROM information_schema.columns A INNER JOIN information_schema.tables T USING (table_schema, table_name)
INNER JOIN information_schema.schemata S ON A.table_schema=S.schema_name
LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name)
WHERE is_nullable='YES' AND T.table_type='BASE TABLE'
AND (A.data_type IN ('timestamp without time zone','timestamp with time zone'))
AND coalesce(column_default, domain_default) IS NOT NULL
AND domain_name IS NOT NULL
AND (A.table_schema = 'public'
OR S.schema_owner<>'postgres')
ORDER BY A.domain_schema, A.domain_name;

Add NOT NULL constraint to the domain.

Collections where the query belongs to

Collection name	Collection 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 .

Collection name

Collection 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 where the query belongs to

Category name	Category description
Default value	Queries of this catergory provide information about the use of default values.
Missing data	Queries of this category provide information about missing data (NULLs) in a database.

Category name

Category description

Default value

Queries of this catergory provide information about the use of default values.

Missing data

Queries of this category provide information about missing data (NULLs) in a database.