Query goal: | Be precise and write as little code as possible. Prefer expressions with simple invocations of functions like localtimestamp, current_timestamp, and current_date over expressions like (now())::date. Find table columns that have a default value that casts the type of the returned value of a non-deterministic function (now, localtimestamp, current_timestamp, and current_date). |
Notes about the query: | 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. |
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 |
Data source: | INFORMATION_SCHEMA only |
SQL query: | Click on query to copy it
WITH temp_col AS (SELECT c.table_schema, t.table_type, c.table_name, c.column_name, 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 ~* '[(](now|localtimestamp|current_timestamp|current_date).*[)]::' ORDER BY table_schema, table_name, column_name; |
Collection name | Collection description |
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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 . |
Category name | Category description |
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Default value | Queries of this catergory provide information about the use of default values. |
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. |