PostgreSQL Query Catalog

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Filter Queries

Found 1036 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
461 Perhaps an existing domain could be used to define the properties of a base table column? Find non-foreifgn key base table columns that have not been defined based on a domain but that have the same properties (data type, field size, default value, and pemisson to use NULLs) as some domain. If you define a domain, then you should try to use it in case of multiple columns. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
462 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 2025-11-07 10:11 MIT License View
463 Base table columns permitting negative prices/quantity Find non-foreign key base table columns that name refers to the possibility that these are used to register prices/quantities. Find the columns that do not have any simple CHECK constraints, i.e., a constraint that covers only this column. In this case registration of negative price/quantity is most probably not prohibited. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
464 Base table columns permitting URLs without a protocol Find non-foreign key base table columns that name refers to the possibility that these are used to register URLs. Find the columns that do not have any simple CHECK constraint that references to a protocol. A simple check constraint covers a single column. In this case registration of URLs without a protocol is most probably not prohibited. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
465 Columns of base tables that hold truth values but do not have a default value (non-Boolean columns) Find non-foreign key columns of base tables that probably (based on the column name) contain values that represent truth values but do not have a default value. There are only two truth values - TRUE and FALSE - in case of two-valued logic. It could be possible to select one of these as the default value in case of the columns. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
466 Columns of base tables that hold truth values but do not restrict the permitted values (non-Boolean columns) Find non-foreign key columns of base tables that probably (based on the column name) contain values that represent truth values but do not have a have a check constraint. The constraint should restrict the permitted values with values that represent truth values TRUE and FALSE. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
467 Three-valued logic (non-Boolean columns) Find non-foreign key columns of base tables that probably (based on the column name) contain values that represent truth values but do not have NOT NULL constraint. Use two-valued logic (TRUE, FALSE) instead of three-valued logic (TRUE, FALSE, UNKNOWN). Because NULL in a Boolean column means unknown make all the columns mandatory. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
468 Perhaps textual code columns lack a CHECK constraint Find non-foreign key textual columns that name refers to the fact that they contain some kind of code but the column does not have any check constraint or the only constraint restricts empty strings or whitespace characters. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
469 Overlapping non-function based indexes that have the same leading column with the same operator class Find non-function based indexes (both unique and non-unique) that duplicate each other because their first column is identical and the operator class that is used in case of the first column is identical. Include unique indexes that support a constraint (primary key, unique, exclude), i.e., these indexes have been automatically created due to the constraint declaration. Problem detection system catalog base tables only 2025-11-07 10:11 MIT License View
470 Overlapping non-function based indexes that have the same leading column but with different operator class Find non-function based indexes (both unique and non-unique) that have identical first column but the operator class that is used in case of the first column is different. Include unique indexes that support a constraint (primary key, unique, exclude), i.e., these indexes have been automatically created due to the constraint declaration. General system catalog base tables only 2025-11-07 10:11 MIT License View
471 Do not leave out the referential constraints (based on classifiers) Find non-key and non-foreign columns of base tables with a textual column and small field size in case of which there is a table with the name that is similar to the column name. Perhaps the table is a classifier table and the column should have a foreign key constraint referencing to the table. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
472 Non-key and non-foreign key base table columns with the same name and type that have in some cases permit NULLs and in some cases not Find non-key and non-foreign key base table columns with the same name and type that in some cases permit NULLs and in some cases not. Be consistent. Make sure that this selection is consistent. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
473 Pairs of non-key column name and type pairs that have in different base tables a different default value Find non-key base table columns with the same name and type that have different default values. Be consistent. Columns with the same name and type shouldn't probably have different default values in case of different tables. "If you do something a certain way, do all similar things in the same way." (Robert C. Martin, Clean Code) Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
474 Pairs of non-key column name and type pairs that have in some base tables a default value and some cases not Find non-key base table columns with the same name and type that have in some cases a default value and some cases not. Be consistent. Columns with the same name and type should probably either always have a default value in case of different tables or never have a default value in case of different tables. "If you do something a certain way, do all similar things in the same way." (Robert C. Martin, Clean Code) Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
475 Lifecycle not initiated Find non-primary key and non-unique base table foreign key columns that name refers to the possibility that these are used to register references to a state classifier. The column must belong to a foreign key and does not have a default value. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
476 Perhaps excessive privileges to use views Find non-SELECT privileges to use views (for others than the owner of the view). Perhaps there should be only the privilege to make queries (SELECT statements based on the views) and data modification takes place by using routines. REFERENCES and TRIGGER privileges are definitely not needed. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
477 Database connect privilege is missing Find non-superusers who have a privilege to use a table or a routine but do not have the privilege to connect to the database. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
478 Base table column of national identification numbers does not have a correct data type Find non-textual base table columns that name refers to the possibility that these are used to register national identification numbers (personal codes). The codes can contain additional symbols to numbers. Problem detection INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View
479 Non-updatable views with DO INSTEAD NOTHING rules Find non-updatable views that have a DO INSTEAD NOTHING rule. The rule is used to prevent updates. However, the view is aniway non-updatable. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
480 NOT VALID foreign key constraints Find not valid foreign key constraints. 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 system catalog base tables only 2025-11-07 10:11 MIT License View