| 321 | Exclude constraint instead of simple UNIQUE | Find exclude constraints that implement a simple UNIQUE constraint. The checking might be slower compared to UNIQUE constraint. | Problem detection | system catalog base tables only | 2021-02-25 17:30 | MIT License | |
| 322 | Exclude constraint to prevent overlapping time periods | Find exclude constraints on base tables with multiple date/timestamp columns that prevent overlapping time periods. | General | INFORMATION_SCHEMA+system catalog base tables | 2023-11-07 00:44 | MIT License | |
| 323 | Explicit locking | PostgreSQL uses Multi-version Concurrency Control (MVCC) and thus, sometimes, one has to explicitly lock certain rows or entire table. One has to use LOCK TABLE or SELECT … FOR UPDATE statements for that. | General | INFORMATION_SCHEMA+system catalog base tables | 2023-12-11 15:02 | MIT License | |
| 324 | Explicit locking is missing | PostgreSQL uses multiversion concurrency control (MVCC). SELECTs do not block modifications and vice versa. One has to take steps to achieve correct behaviour. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-12-13 14:57 | MIT License | |
| 325 | Explicit locking is missing (2) | Find user-defined routines that have a subquery in a DELETE or UPDATE statement without the FOR UPDATE clause. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-12-06 12:15 | MIT License | |
| 326 | Explicit locking is probably not needed | You do not need explicit locking (LOCK TABLE or SELECT … FOR UPDATE) in case of routines that only search some data but do not modify any data and do not raise any exception. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-11-04 12:08 | MIT License | |
| 327 | Extension routines | Find all routines that belong to an extension. | General | system catalog base tables only | 2020-11-06 14:51 | MIT License | |
| 328 | Extension routines in the schema "public" | Find extensions that routines are in the schema public. | General | system catalog base tables only | 2024-01-04 11:56 | MIT License | |
| 329 | Extension routines that execution privilege has been granted to PUBLIC | Know the privileges that users have in your system. Probably all the database users do not need these privileges. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:30 | MIT License | |
| 330 | Extensions that are available but are not installed | Try to use as much the possibilities of the DBMS as possible. On the other hand, do not install extensions that are not needed in order not to overcomplicate the database. | General | system catalog base tables only | 2020-11-06 14:51 | MIT License | |
| 331 | Extreme contraction | Find names that contain extremely short terms, due to an excessive word contraction, abbreviation, or acronym usage. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-12-21 17:20 | MIT License | |
| 332 | Field size is not sufficiently different in case of base table columns | Find base table columns that name refers to the possibility that these are used to register names. Find base table columns that name refers to the possibility that these are used to register comments/descriptions/etc. Find the cases where a base table contains columns from the both sets and the field size in case of the latter is not at least twice as big as in case of the former. For example, if the name of a service can be 100 character long, then it is quite illogical that the description of the service is only at most 200 characters long. | Problem detection | INFORMATION_SCHEMA only | 2021-03-27 18:51 | MIT License | |
| 333 | FILLFACTOR is probably too big | Find base tables in case of which the FILLFACTOR property has perhaps a too big value. Try to find base tables that probably encounter UPDATE operations. In the tables that have frequent updates you want to have free space in table pages (blocks) to accommodate new row versions, which the system automatically creates as a result of fulfilling UPDATE statements. If a new row version will be put to another page by the system, then it means that table indexes have to be updated as well. Thus, the more there are indexes, the more the table would benefit from keeping a new row version in the same page as the old version. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-11-21 09:19 | MIT License | |
| 334 | FILLFACTOR is probably too small | Too small fillfactor wastes storage space. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2022-11-02 10:43 | MIT License | |
| 335 | FILLFACTOR is probably too small (2) | Find base tables that probably implement many to many relationship type, have no clear sign that there are columns that should be updated, but still have fillfactor less than 100. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-12-11 14:38 | MIT License | |
| 336 | Find all non-foreign key columns of base tables | Find all non-foreign key columns of base tables. Make sure that no foreign key constraint is missing. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-21 02:59 | MIT License | |
| 337 | Find all publications | Find publications of tables that have been created in order to enable logical replication. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-18 15:09 | MIT License | |
| 338 | Flag parameters | A Boolean parameter may be used to determine what task to fulfill. In this case the routine has multiple tasks and does not satisfy the separation of concerns principle. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-12-19 11:03 | MIT License | |
| 339 | Foreign key column has a default value that is not present in the parent table | Find foreign key columns that have a default value that is not present in the parent table. Identify default values that cause violations of the referential constraints. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:30 | MIT License | |
| 340 | Foreign key column has a simple check constraint that is attached directly to the table | Find foreign key columns that are covered by a simple check constraint, i.e., the constraint involves only one column. Look only constraints that are directly associated with the table, i.e., are not specified through a domain. Perhaps the constraint should be defined on the referenced candidate key column. | Problem detection | system catalog base tables only | 2021-02-25 17:29 | MIT License | |