| 61 | ROW level BEFORE INSERT and INSTEAD OF INSERT triggers that procedures refer to the row variable OLD | Do not write incorrect code. Variable OLD: "Data type RECORD; variable holding the old database row for UPDATE/DELETE operations in row-level triggers. This variable is null in statement-level triggers and for INSERT operations." (PostgreSQL documentation) | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-12-20 14:22 | MIT License | |
| 62 | Base table columns with SMALLINT or BOOLEAN type | Each column should have the most appropriate data type. Developers sometimes forget to use SMALLINT type even if it is logically the best choice. Developers also sometimes forget to use BOOLEAN type and instead invent something. | General | INFORMATION_SCHEMA only | 2020-11-06 14:51 | MIT License | |
| 63 | Base table columns with one of the following types: BIGINT, INTEGER, TEXT, or VARCHAR without max character length | Each column should have the most appropriate data type. Developers sometimes misuse BIGINT, INTEGER, TEXT or VARCHAR type in places where a type that permits smaller values would be more appropriate and semantically descriptive. | General | INFORMATION_SCHEMA only | 2020-11-06 14:51 | MIT License | |
| 64 | Base table columns with UUID type | Each column should have the most appropriate data type. If one does not want to have in a table the surrogate key that values are generated by using a sequence generator, then one may use instead a column with Universally Unique Identifiers as the key column. | General | INFORMATION_SCHEMA only | 2021-03-07 20:57 | MIT License | |
| 65 | Perhaps a relationship should be irreflexive | Enforce all the constraints. A binary relation is called irreflexive, if it does not relate any element to itself. | Problem detection | system catalog base tables only | 2021-02-25 17:29 | MIT License | |
| 66 | All foreign key constraints | Enforce referential integrity in database. Find all referential integrity (foreign key) constraints. | General | system catalog base tables only | 2023-12-07 12:48 | MIT License | |
| 67 | Enumerated types with zero or one value | Fidn enumerated types with zero or one value. Type is a named finite set of values. The empty set is a set. A set with one value is a set. Thus, types with zero or one value are legal. In practical terms each type, usually, should contain at least two values. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:30 | MIT License | |
| 68 | Name does not contain any vowels (aggregate view) | Find aggregate information about the names of database objects that do not contain any vowels. | Sofware measure | INFORMATION_SCHEMA+system catalog base tables | 2023-03-18 16:14 | MIT License | |
| 69 | Base table columns where TOASTing is possible | Find all base table columns in case of which the system can use TOAST technique. | General | system catalog base tables only | 2020-11-06 14:51 | MIT License | |
| 70 | Base tables with exactly one key | Find all base tables that have exactly one PRIMARY KEY or UNIQUE constraint. Find and enforce all the keys. Are you sure there are not more keys in the table? | General | system catalog base tables only | 2021-10-16 10:39 | MIT License | |
| 71 | Base table FILLFACTOR is not 100 | Find all base tables where FILLFACTOR is not 100, i.e., the default value. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 72 | All CHECK constraints of domains that are not associated with any table | Find all CHECK constraints (except NOT NULL) of domains that are not associated with any column. | General | INFORMATION_SCHEMA only | 2020-11-06 14:51 | MIT License | |
| 73 | Table check constraints with regular expressions | Find all CHECK constraints (except NOT NULL) that are associated with a base table or a foreign table column and use a regular expression. It is useful to enforce as many constraints at database level as possible. In this way one improves data quality as well as gives extra information to the database users (including the DBMS engines, development environments, and applications). | General | INFORMATION_SCHEMA only | 2022-12-13 12:47 | MIT License | |
| 74 | All table CHECK constraints that cover at leat one column | Find all CHECK constraints (except NOT NULL) that are associated with a base table or a foreign table column. It is useful to enforce as many constraints at database level as possible. In this way one improves data quality as well as gives extra information to the database users (including the DBMS engines, development environments, and applications). | General | INFORMATION_SCHEMA only | 2024-01-01 11:27 | MIT License | |
| 75 | Consistency of CHECK constraint name and content | Find all CHECK constraints that name contains a digit. Make sure that the name and the Boolean expression are consistent. | General | INFORMATION_SCHEMA only | 2021-12-10 13:21 | MIT License | |
| 76 | All column dynamic DEFAULT values values that do not invoke a sequence | Find all columns that have a dynamic default value, i.e., the value is returned by a function but the function is not for invoking a sequence. | General | INFORMATION_SCHEMA only | 2021-11-15 15:57 | MIT License | |
| 77 | All column static DEFAULT values | Find all columns that have a static default value, i.e., the value is not returned by a function. | General | INFORMATION_SCHEMA only | 2021-11-15 15:57 | MIT License | |
| 78 | Comments of columns | Find all comments of columns of tables. | General | system catalog base tables only | 2023-10-18 14:09 | MIT License | |
| 79 | All covering indexes | Find all covering indexes, which include data from additional columns in leaf blocks. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-12-23 11:54 | MIT License | |
| 80 | Deferrable constraints | Find all deferrable constraints. | General | system catalog base tables only | 2021-10-08 11:25 | MIT License | |