Registration/modification time is not automatically set

Query goal:

Find columns of base tables that name and type suggest that the column should contain the row registration time or last modify time but the column does not have a default value.

Notes about the query:

The query considers both column names in English and Estonian.

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:

Add a default value to the column that invokes a function that returns current timestamp.

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, A.is_nullable
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 D USING (domain_schema, domain_name)
WHERE domain_default IS NULL AND column_default IS NULL
AND A.data_type~*'(date|timestamp)'
AND (A.column_name~*'(registr|creat|insert|loomise|lisamise)'
OR (A.column_name~*'(muutmis|update|change|modify)'
AND A.column_name!~*'(jargmine|next)'))
AND T.table_type='BASE TABLE'
AND (A.table_schema = 'public'
OR S.schema_owner<>'postgres')
ORDER BY table_schema, table_name, ordinal_position;

Collections where the query belongs to

Collection name	Collection description
Find problems about base tables	A selection of queries that return information about the data types, field sizes, default values as well as general structure of base tables. Contains all the types of queries - problem detection, software measure, and general overview
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 about base tables

A selection of queries that return information about the data types, field sizes, default values as well as general structure of base tables. Contains all the types of queries - problem detection, software measure, and general overview

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.
Result quality depends on names	Queries of this category use names (for instance, column names) to try to guess the meaning of a database object. Thus, the goodness of names determines the number of false positive and false negative results.
Temporal data	Queries of this category provide information about temporal (time-related) data that is kept in the database.

Category name

Category description

Default value

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

Result quality depends on names

Queries of this category use names (for instance, column names) to try to guess the meaning of a database object. Thus, the goodness of names determines the number of false positive and false negative results.

Temporal data

Queries of this category provide information about temporal (time-related) data that is kept in the database.