| Seq nr | Name | Goal | Type | Data source▲ | Last update | License | ... |
|---|---|---|---|---|---|---|---|
| 221 | All partial indexes | Find indexes to a subset of table rows. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 222 | All sequence generators | Find all sequence generators. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 223 | All short cycles (tables) | Find pairs of tables that have both a foreign key that references to the other table. Such cycles can involve more than two tables but the query detects only cycles with two tables. | General | INFORMATION_SCHEMA+system catalog base tables | 2021-11-27 20:54 | MIT License | |
| 224 | All table functions | Find all functions that return a set of rows. | General | INFORMATION_SCHEMA+system catalog base tables | 2023-10-29 11:39 | MIT License | |
| 225 | All unique keys have at least one optional column | Find base tables where all unique keys (sets of columns covered by a unique constraint, or a unique index) have at least one optional column. In this case there can be rows in the table where the values that should identify the row are missing. Because NULL is not a value and is not duplicate of another NULL the, follwing is possible: CREATE TABLE Uniq(a INTEGER NOT NULL, b INTEGER, CONSTRAINT ak_uniq UNIQUE (a, b)); INSERT INTO Uniq(a, b) VALUES (1, NULL); INSERT INTO Uniq(a, b) VALUES (1, NULL); | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-10-21 11:54 | MIT License | |
| 226 | All user triggers that are associated with tables | Find user-defined triggers that react to data modifications in tables. Triggers should be used only for the tasks that cannot be achieved in a declarative manner, i.e., by declaring a constraint. Triggers of the same table with the same event_manipulation, action_timing, and action_orientation are sorted based on the trigger name. This is the order of execution of triggers. | General | INFORMATION_SCHEMA+system catalog base tables | 2021-01-19 11:27 | MIT License | |
| 227 | AND takes precedence over OR | Make sure that Boolean expressions take into account precedence rules of Boolean operators. AND operator has precedence over OR operator. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 228 | A non-parameterized table function instead of a view | Find table functions that do not have any parameters. Prefer simpler and more portable solutions. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-11-03 21:16 | MIT License | |
| 229 | A predefine character class has been incorrectly specified | Find regular expressions where a predefined character class is incorrectly specified, e.g. [digit] instead of [:digit:]. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-23 12:09 | MIT License | |
| 230 | Are the passwords hashed? | Find base table columns that name refers to the possibility that these are used to register passwords. Return a value from each such column. Make sure that the password is not registered as open text. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-10 12:14 | MIT License | |
| 231 | Are there enough routines that implement database operations? | Find user-defined routines that implement database operations (comment refers to an operation) but show these only if there are at least eight such routines. Contracts of database operations are specified in the system analysis documentation. The contracts apply the idea of design by contract in the field of databases. | General | INFORMATION_SCHEMA+system catalog base tables | 2021-11-03 20:07 | MIT License | |
| 232 | A routine is invoked only once | Find user-defined routines that are invoked by exactly one user-defined routine. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-12-22 14:53 | MIT License | |
| 233 | A setter does not update a table | Find user-defined non-trigger SQL and PL/pgSQL routines that name starts with "set" (but not with "setting") but do not contain a UPDATE statement. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2022-11-27 18:35 | MIT License | |
| 234 | A state machine is implemented with the help of an enumeration type | Find implementations of state machines that uses an enumeration type. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-26 15:39 | MIT License | |
| 235 | A table has the same name as a routine | Find table names that are the same as some routine name. Use different names to avoid confusion. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:30 | MIT License | |
| 236 | At most one row is permitted in a table (based on check constraints) | Find base tables and foreign tables where based on a check constraint, a key constraint, and a NOT NULL constraint can be at most one row. Make sure that this is the real intent behind the constraint, not a mistake. Find tables where a check constraint permits only one possible value in a column, the column has NOT NULL constraint, and constitutes a key, i.e., has the PRIMARY KEY or UNIQUE constraint. | General | INFORMATION_SCHEMA+system catalog base tables | 2022-11-03 15:21 | MIT License | |
| 237 | At most one row is permitted in a table (based on enumeration types) | Find base tables and foreign tables where based on the type of a column, a key constraint, and a NOT NULL constraint can be at most one row. Make sure that this is the real intent behind the constraint, not a mistake. Find tables where a column has an enumeration type with exactly one value, the column has NOT NULL constraint, and constitutes a key, i.e., has the PRIMARY KEY or UNIQUE constraint. | General | INFORMATION_SCHEMA+system catalog base tables | 2022-11-03 15:18 | MIT License | |
| 238 | Base table column of surrogate key values does not have an integer data type (based on column names) | Find base table columns that belong to a primary key, unique, or foreign key constraint and that name refers to the possibility that these are used to hold surrogate key values. Find the columns where the data type of the column is not an integer type or uuid. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-13 12:10 | MIT License | |
| 239 | Base table columns permitting e-mail addresses without @ sign | Find non-foreign key base table columns that name refers to the possibility that these are used to register e-mail addresses. Find the columns that do not have any simple CHECK constraint that contains @ sign. A simple check constraint covers a single column. In this case registration of e-mail addresses without @ is most probably not prohibited. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 240 | Base table columns permitting empty strings and strings that consist of only whitespace characters | Find non-foreign key columns of base tables that have a textual type and do not have any simple CHECK constraint, i.e., a constraint that involves only one column. Such columns can contain the empty string and strings that consist of only whitespace. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License |