PostgreSQL Query Catalog

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Filter Queries

Found 997 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
721 Predefined character classes must be between double square brackets Find regular expressions that do not have predefined character classes between double square brackets, e.g., [:digit:] instead of [[:digit:]]. Problem detection INFORMATION_SCHEMA+system catalog base tables 2023-11-22 17:34 MIT License View
722 Prefer Polymorphism to If/Else or Switch/Case Find routines with IF/ELSE or SWITCH/CASE statements. If your routine has a multipart IF/CASE statement, then perhaps it has multiple tasks and it violates the separation of concerns and single responsibilities principles. Problem detection INFORMATION_SCHEMA+system catalog base tables 2023-11-29 13:31 MIT License View
723 Prefer Polymorphism to If/Else or Switch/Case (2) Find routines with multiple raise exception commands. Perhaps it has multiple tasks and it violates the separation of concerns and single responsibilities principles. Problem detection INFORMATION_SCHEMA+system catalog base tables 2023-11-29 13:39 MIT License View
724 Prefixes of base table names Find base tables that name starts with a prefix. Do not use prefixes in case of base table names. Derive the names from the names of entity types. Do not use "_", "t_", "tab_", "t11_" etc as prefixes of a table. Problem detection INFORMATION_SCHEMA only 2022-11-15 16:32 MIT License View
725 Preventing strings that consist of only spaces instead of strings that consist of only whitespace characters Find columns of base tables and foreign tables where one uses a check constraint to prevent values that consist of only spaces. Make sure that this is the correct constraint and there is no need to prevent values that consist of only whitespace characters. Problem detection INFORMATION_SCHEMA only 2021-02-25 17:29 MIT License View
726 Primary key columns are not the first in a table In SQL tables each column has the ordinal position. Find all the base tables where the primary key columns are not the first in the table, i.e., there is at least one non-primary key column that comes before a primary key column. It is easier to grasp the primary key if its columns are the first in the table. It could be that a table inherits from an abstract table where no keys have been defined. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-10-16 10:33 MIT License View
727 Privileges on the database and its schemas, domains, types, languages, sequences, foreign data wrappers, and foreign servers that have been granted to a superuser Find privileges on the database and its schemas, domains, types, languages, sequences, foreign data wrappers, and foreign servers that have been granted to a superuser. Superuser can do anything in the database and thus does not need the privileges. The result is a sign that perhaps the executed GRANT statements were incorrect (wrong username) or the grantee later got superuser status (that it shouldn't have). Problem detection system catalog base tables only 2022-10-21 15:53 MIT License View
728 Procedures cannot have START TRANSACTION and SAVEPOINT You cannot use a START TRANSACTION or a SAVEPOINT statement in a procedure. Procedures appeared in PostgreSQL 11. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-11-04 11:50 MIT License View
729 Publications with no tables Find publications that do not contain any table. Problem detection system catalog base tables only 2021-02-25 17:30 MIT License View
730 PUBLIC has TEMPORARY privilege in the database Find as to whether PUBLIC (all current and future users) has TEMPORARY privilege in the database. PUBLIC gets the privilege by default. Problem detection system catalog base tables only 2021-12-31 15:52 MIT License View
731 PUBLIC has the USAGE privilege of a schema Find schemas where PUBLIC has the usage privilege. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-11-23 17:52 MIT License View
732 Reasonable upper bound to the length of textual values is missing Find non-foreign key base table columns that are not used to record comments/descriptions/explanations etc. and that have TEXT or VARCHAR type without restrictions to the field size (field size in case of VARCHAR or a CHECK constraint). Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-12-16 12:32 MIT License View
733 Recursive relationships with the same source and target Find incorrectly implemented adjacency lists. Problem detection system catalog base tables only 2021-02-25 17:30 MIT License View
734 Recursive rules that directly modify their home table Do not cause potentially infinite loops. Recursive rules would fire itself over and over again. Although the system is able to detect these after executing a data modification statement it is better to avoid creating these altogether. Problem detection system catalog base tables only 2022-10-21 15:59 MIT License View
735 Recursive triggers that directly modify their home table Do not cause potentially infinite loops. Recursive trigger fire themselves over and over again. If the system is not able to stop these, then it eventually consumes all the resources of the system. Although the system is able to detect these it is better to avoid creating these altogether. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-02-25 17:30 MIT License View
736 Redundant indexes Find indexes that may be redundant. In addition to identical indexes it also considers indexes that cover the same columns and have the same properties except uniqueness. The query considers all types of indexes, including indexes that have been automatically created to support a constraint and function-based indexes. Problem detection system catalog base tables only 2021-02-25 17:29 MIT License View
737 Reference to the numeric type is too imprecise, i.e., precision and scale are missing Find base table columns that have the DECIMAL/NUMERIC type, but do not have precision and scale specified. "Specifying: NUMERIC without any precision or scale creates a column in which numeric values of any precision and scale can be stored, up to the implementation limit on precision. A column of this kind will not coerce input values to any particular scale, whereas numeric columns with a declared scale will coerce input values to that scale." Problem detection INFORMATION_SCHEMA only 2021-02-25 17:30 MIT License View
738 Registration/modification time is not automatically set Find columns of base tables that name and type suggest that the column should contain the row registration time or last modify time but the column does not have a default value. Problem detection INFORMATION_SCHEMA only 2021-03-28 17:36 MIT License View
739 Registration/modification time is not mandatory Find columns that contain registration or modification time but are optional. Problem detection INFORMATION_SCHEMA only 2023-11-26 16:51 MIT License View
740 Regular expression with possibly a LIKE pattern Find expressions that use a regular expression with a like predicate pattern. Problem detection INFORMATION_SCHEMA+system catalog base tables 2023-10-21 11:11 MIT License View