Find table columns with timestamp/date types that data type and dynamically found default value have a different type.
Notes
The query finds default values that are associated directly with a base table column as well as default values that are specified through a domain. The query does not find default values of domains that are not associated with any table.
Type
Problem detection (Each row in the result could represent a flaw in the design)
Change the default value or the data type of the column.
Data Source
INFORMATION_SCHEMA only
SQL Query
WITH temp_col AS (SELECT c.table_schema, t.table_type, c.table_name, c.column_name, c.ordinal_position, c.data_type, coalesce(column_default, domain_default) AS def
FROM INFORMATION_SCHEMA.columns AS c LEFT JOIN INFORMATION_SCHEMA.domains AS d USING (domain_schema, domain_name)
INNER JOIN INFORMATION_SCHEMA.tables AS t USING (table_schema, table_name)
WHERE c.data_type IN ('date', 'timestamp without time zone', 'timestamp with time zone')
AND 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))
SELECT table_schema, table_type, table_name, column_name, data_type, def
FROM temp_col
WHERE (def ~* '^LOCALTIMESTAMP' AND data_type<>'timestamp without time zone')
OR ((def ~* '^(CURRENT_TIMESTAMP|CLOCK_TIMESTAMP|STATEMENT_TIMESTAMP|TRANSACTION_TIMESTAMP)' OR def='now()') AND data_type<>'timestamp with time zone')
OR (def='CURRENT_DATE' AND data_type<>'date')
ORDER BY table_schema, table_name, ordinal_position;
Collections
This query belongs to the following collections:
Name
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
This query is classified under the following categories:
Name
Description
Comfortability of data management
Queries of this category provide information about the means that have been used to make the use or management of database more comfortable and thus, more efficient.
Data types
Queries of this category provide information about the data types and their usage.
Default value
Queries of this catergory provide information about the use of default values.
Inconsistencies
Queries of this catergory provide information about inconsistencies of solving the same problem in different places.
System-defined functions
Queries of this category provide information about the use of system-defined functions.
Temporal data
Queries of this category provide information about temporal (time-related) data that is kept in the database.
Validity and completeness
Queries of this category provide information about whether database design represents the world (domain) correctly (validity) and whether database design captures all the information about the world (domain) that is correct and relevant (completeness).