Query goal: | Find table columns with time types, which data type and dynamically found default value have a different type. |
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 |
Fixing suggestion: | Decide as to whether it is important to record information about a timezone or not and accordingly change either the type or the default value of the column. |
Data source: | INFORMATION_SCHEMA only |
SQL query: | Click on query to copy it
WITH time_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 ('time without time zone', 'time 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 time_col WHERE (def LIKE 'LOCALTIME%' AND data_type<>'time without time zone') OR (def LIKE 'CURRENT_TIME%' AND data_type<>'time with time zone') ORDER BY table_type, table_schema, table_name, column_name; |
Collection name | Collection description |
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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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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. |
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). |