Columns for registration and update times

Query goal:

Find base table columns that based on the names and data types are meant for registering registration time or update time. Make sure that the columns have the same properties.

Query type:

General (Overview of some aspect of the database.)

Query license:

MIT License

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.datetime_precision, A.is_nullable, A.column_default, D.domain_default
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 A.data_type~*'(timestamp|date)'
AND (A.column_name~*'(reg|creat|insert|loom|lisam)'
OR (A.column_name~*'(muutm|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, column_name;

Collections where the query belongs to

Collection name	Collection description
Find problems by overview	Queries that results point to different aspects of database that might have problems. A human reviewer has to decide based on the results as to whether there are problems or not .

Collection name

Collection description

Find problems by overview

Queries that results point to different aspects of database that might have problems. A human reviewer has to decide based on the results as to whether there are problems 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.