Query goal: | Find the different default values that implement something other than a surrogate key. |
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
WITH defs AS (SELECT c.table_schema, t.table_type, c.table_name, c.column_name, c.data_type, c.domain_schema, c.domain_name, coalesce(c.column_default, domain_default) AS default_value, CASE WHEN c.column_default IS NOT NULL THEN 'Column default' ELSE 'Domain default' END AS default_type FROM information_schema.columns AS c LEFT JOIN information_schema.domains d USING (domain_schema, domain_name) INNER JOIN INFORMATION_SCHEMA.tables AS t USING (table_schema, table_name) WHERE c.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) AND (column_default IS NOT NULL OR domain_default IS NOT NULL)) SELECT default_value, Count(*) AS nr_of_occurrences FROM defs WHERE default_value!~*'nextval[(]' GROUP BY default_value ORDER BY Count(*) DESC, default_value; |
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 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 . |
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. |
Default value | Queries of this catergory provide information about the use of default values. |