PostgreSQL Query Catalog

Project on GitHub
Filter Queries

Found 997 queries.

  • All the queries about database objects contain a subcondition to exclude from the result information about the system catalog.
  • Although the statements use SQL constructs (common table expressions; NOT in subqueries) that could cause performance problems in case of large datasets it shouldn't be a problem in case of relatively small amount of data, which is in the system catalog of a database.
  • Statistics about the catalog content and project home in GitHub that has additional information.

# Name Goal ▲ Type Data source Last update License
741 The number of user-defined routines based on their database usage Find the number of non-extension routines in a database that modify data. The routines can be used to implement virtual data layer. Thus the queriy gives some indications about the possible extent of the layer. The query distinguishes trigger and non-trigger routines, thus it also gives information about triggers that modify data. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2024-01-15 00:38 MIT License View
742 Number of rows in base tables Find the number of rows in base tables. General system catalog base tables only 2022-10-27 19:44 MIT License View
743 The number of rules by different characteristics Find the number of rules by event (SELECT, INSERT, UPDATE, and DELETE) and in total. Sofware measure system catalog base tables only 2024-01-14 16:10 MIT License View
744 The number of user-defined rules Find the number of rules in a database, excluding the rules that are associated with system catalog tables and rules that are created to support views. Rules can be used to maintain data integrity in a database by causing rejection of incorrect insertions and updates. Therefore, the number of rules in a database gives some indications about the state of enforcing constraints at the database level. Sofware measure system catalog base tables only 2022-10-21 11:19 MIT License View
745 The number of user-defined rules by schema and in total Find the number of rules in a database in different schemas, excluding the rules that are created to support views. Rules can be used to maintain data integrity in a database by causing rejection of incorrect insertions and updates. Therefore, the number of rules in a database gives an indication about the state of enforcing constraints at the database level. Sofware measure system catalog base tables only 2022-10-21 11:29 MIT License View
746 Number of system-generated and user-defined constraint names by constraint type (constraints that involve more than one column) Find the number of system-generated constraint names by constraint type. Names should follow the same style. If there is a mix of system-generated and user-defined names, then the style is most probably different. Sofware measure system catalog base tables only 2023-01-10 14:53 MIT License View
747 Number of system-generated and user-defined constraint names by constraint type (constraints that involve one column) Find the number of system-generated constraint names by constraint type. Names should follow the same style. If there is a mix of system-generated and user-defined names, then the style is most probably different. Sofware measure system catalog base tables only 2023-01-10 14:52 MIT License View
748 The number of table constraints with the cardinality bigger than one Find the number of table constraints with the cardinality bigger than one. Find the number, based on the cardinality, constraint type, and cardinality+constraint type. Sofware measure system catalog base tables only 2020-11-19 13:29 MIT License View
749 The number of tables by schema, by type, and in total Find the number of tables (base, foreign, and derived) in different schemas. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2021-03-07 10:57 MIT License View
750 The proportion of mandatory and optional textual base table columns Find the number of textual base table columns, the number of optional textual base table columns (permit NULLs), and the number of mandatory textual base table columns (do not permit NULLs). Sofware measure INFORMATION_SCHEMA only 2021-01-15 17:39 MIT License View
751 The generic names (columns) (aggregate view)(2) Find the number of too generic base table and view column names. Do not differentiate between base table and view columns to determine what name is generic. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2023-01-18 16:42 MIT License View
752 The number of user-defined non-trigger routines by schema, by language, and by routine type Find the number of user-defined non-trigger routines based on their schema, language, and routine type. The routines can be used to implement virtual data layer. Thus the queriy gives some indications about the possible extent of the layer. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2024-01-14 20:53 MIT License View
753 The number of user-defined non-trigger routines by schema, by security type, and by being deterministic Find the number of user-defined non-trigger routines based on their schema, security type, and being deterministic. The routines can be used to implement virtual data layer. Thus the queriy gives some indications about the possible extent of the layer. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2024-01-14 20:52 MIT License View
754 The number of routines by the number of input parameters Find the number of user-defined non-trigger routines by the number of input parameters. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2024-01-16 09:43 MIT License View
755 The number of user defined triggers by different characteristics Find the number of user defined triggers by action orientation (ROW, STATEMENT), action timing (BEFORE, AFTER, INSTEAD OF), and event type (INSERT, UPDATE, DELETE) and their combinations. Sofware measure INFORMATION_SCHEMA only 2024-01-14 17:41 MIT License View
756 The use of xmin hidden column in views and routines Find the number of views and materialized views that have a column with the xid type and the number of routines that contain a UPDATE or a DELETE statement that search condition refers to the xmin column. If one uses optimistic approach for dealing with the concurrent modifications of data, then xmin values should be presented by views and used in routines that modify or delete rows. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2021-11-04 11:56 MIT License View
757 Number of views with and without security barrier Find the number of views, the number of views with and without security barrier setting, and the names of views with and without the security barrier setting. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2024-12-13 19:41 MIT License View
758 Very similar column names Find the pairs of table columns that name is different only by one symbol and that have the same type and/or domain. Problem detection INFORMATION_SCHEMA+system catalog base tables 2023-03-18 20:25 MIT License View
759 Patterns of the names of columns of simple primary keys Find the patterns of the names of columns of simple primary keys. Make sure that the naming is consistent. Ideally, the names should indicate as to whether the column is a surrogate or a natural key column. PostgreSQL 14 added primary keys, unique constraints, and foreign keys to system catalogs. Thus the query was modified to exclude the results from the system catalog. General system catalog base tables only 2023-01-20 13:40 MIT License View
760 Patterns of the names of triggers and rules Find the patterns of the names of trigger and rule names. Make sure that the naming is consistent. General INFORMATION_SCHEMA+system catalog base tables 2023-01-14 20:51 MIT License View