| 261 | Function in a function-based index of a column is different from the function that is used in the subquery of a derived table | Find cases where the function of a function-based index of a column is different from the function that is used in the query in a derived table based on the column. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 262 | Do not specify a list of values in a table column definition | Find cases where the list of valid data values in the column is specified in the column definition (in addition to specifying the type of the column) by using, for instance, check constraints or enumerated types. The check constraint is either associated directly with a table or is associated with a domain. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2022-06-09 14:30 | MIT License | |
| 263 | Do not use dual-purpose foreign keys | Find cases where the same column of a base table T is used to record references to multiple base tables. In addition, one has to add additional column to T for holding metadata about the parent table, referenced by the current row. | Problem detection | INFORMATION_SCHEMA only | 2021-03-07 10:56 | MIT License | |
| 264 | Duplicate triggers | Find cases where the same table has multiple triggers with the same type (row-level, statement-level) that react to the same event with the same WHEN condition and with the same way (by invoking the same function). | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:30 | MIT License | |
| 265 | Short cycle (columns) | Find cases where two candidate keys of the same table that are also foreign keys reference to each other. | Problem detection | system catalog base tables only | 2021-11-28 02:08 | MIT License | |
| 266 | Do not assume you must use files | Find cases where you store images and other media as files outside the database and store in the database only paths to the files. | Problem detection | INFORMATION_SCHEMA only | 2021-03-27 16:55 | MIT License | |
| 267 | Do not assume you must use files (based on user data) | Find cases where you store images and other media as files outside the database and store in the database only paths to the files. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-03-10 12:58 | MIT License | |
| 268 | Perhaps too many subconditions in a CHECK constraint | Find check constraints of base table and foreign table columns that are either associated with more than one column and have at least one AND operation or are associated with exactly one column and have two or more AND operations. | Problem detection | INFORMATION_SCHEMA only | 2024-12-11 23:29 | MIT License | |
| 269 | Table columns with NOT VALID CHECK constraints | Find CHECK constraints of base table and foreign table columns that are not valid. These constraints have been created so that the existing data has not been checked against the constraint. It could be deliberate in case of legacy systems that have data quality problems. However, ideally all the data in the table conforms to the constraint. | Problem detection | INFORMATION_SCHEMA only | 2021-02-25 17:29 | MIT License | |
| 270 | CHECK constraints that perhaps do not consider 'infinity' and '-infinity' special values | Find check constraints of base tables that cover exactly one column where the default value of the column is special value 'infinity' or '-infinity'. Find only such constraints that probably check a range of permitted values but do not consider that one of the values might be 'infinity' or '-infinity'. Such special values belong to the types DATE, TIMESTAMP, NUMERIC, REAL, and DOUBLE PRECISION. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-05-08 18:58 | MIT License | |
| 271 | The expression of a check constraint that is associated with a domain needs type conversion | Find check constraints of domains where the Boolean expression invokes an operation that does not match with the data type of the domain. | Problem detection | INFORMATION_SCHEMA only | 2021-02-25 17:29 | MIT License | |
| 272 | Perhaps checking of file extension is incorrect | Find check constraints of tables that use a regular expression to check as to whether a registered string ends with an appropriate file extension. However, the expression does not put the dot sign into the square brackets nor does have the escape character \before it, i.e., it is interpreted as a single character not as the dot sign in the expression. In regular expressions the dot (.) matches any single character except the newline character. | Problem detection | INFORMATION_SCHEMA only | 2023-11-08 15:29 | MIT License | |
| 273 | Cannot register all legal e-mail addresses | Find CHECK constraints on base table or foreign table columns that contain data about e-mail addresses and apply unnecessary restrictions to the these, rejecting potentially some legal addresses. More precisely, find CHECK constraints that prevent registration of e-mail addresses with multiple @ signs. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 274 | Cannot register all legal personal names | Find CHECK constraints on base table or foreign table columns that contain data about personal names and apply unnecessary restrictions to the names, rejecting potentially some legal names. Find checks that prohibit a digit or require a letter A-Z. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 275 | CHECK constraints on columns with personal names | Find CHECK constraints on base table or foreign table columns that contain data about personal names. Make sure that the constraints do not restrict registration of legal names. | General | INFORMATION_SCHEMA only | 2023-12-25 12:51 | MIT License | |
| 276 | Not inherited CHECK constraints that cover at least one column | Find CHECK constraints that cover at least one column and that have been defined in a supertable (parent table) but not in its subtables. An entity that belongs to a subtype should also belong to its supertype. If a subtype entity satisfies some constraint, then logically it must also satisfy the constraints of the supertype as well. If CHECK constraints are not inherited, then this is not guaranteed. If you implement subtyping not merely reuse implementation in the subtables, then the subtables must have at least the same CHECK constraints as the supertable. | Problem detection | system catalog base tables only | 2021-02-25 17:29 | MIT License | |
| 277 | Not inherited CHECK constraints | Find CHECK constraints that have been defined in a supertable (parent table) but not in its subtables. An entity that belongs to a subtype should also belong to its supertype. If a subtype entity satisfies some constraint, then logically it must also satisfy the constraints of the supertype as well. If CHECK constraints are not inherited, then this is not guaranteed. If you implement subtyping not merely reuse implementation in the subtables, then the subtables must have at least the same CHECK constraints as the supertable. CHECK(false) on a supertable is an appropriate CHECK constraint if one wants to prevent registering data directly to the supertable, i.e., data can only be added to the subtables. | General | system catalog base tables only | 2020-12-27 17:42 | MIT License | |
| 278 | CHECK constraints on columns with Boolean data | Find check constraints that involve columns with the type Boolean. | General | INFORMATION_SCHEMA only | 2020-12-27 15:09 | MIT License | |
| 279 | The expression of a simple check constraint that is associated directly with a column needs type conversion | Find check constraints that involve one column and are associated directly with a table where the Boolean expression invokes an operation that does not match with the data type of the column. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 280 | Multicolumn CHECK constraints with with inconsistent Boolean expressions | Find CHECK constraints that involve two columns, i.e., the cardinality of the constraint is 2, the columns have the same name in different tables, and the Boolean expressions of these constraints are different. For instance, in one table it is last_change_time>=reg_time and in another table it is not (reg_time>last_change_time). | Problem detection | system catalog base tables only | 2024-11-30 10:46 | MIT License | |