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
281 CHECKs are associated with a column instead of the domain of the column Find simple check constraints (involve one column) that are associated with a base table column instead of the domain of the column. Common checks of data in columns that share the same domain should be described at the level of domain not at the level of columns. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-02-25 17:29 MIT License View
282 Coalesce/Concat need at least two arguments Find user-defined routines and derived tables (views/materialized views) that have a subquery that contain an invocation of Coalesce or Concat function with just one argument. You should use the Coalesce and Concat functions correctly by invoking these with at least two arguments. If one invokes these functions with one argument, then the functions will return the input value. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-12-08 11:49 MIT License View
283 Column name contains the table name Find columns that have the same name as the table. The names may have different uppercase/lowercase characters. Make sure that the naming style is consistent. General INFORMATION_SCHEMA+system catalog base tables 2023-01-06 12:38 MIT License View
284 Column name is the same as the table name Find columns that have the same name as the table. The names may have different uppercase/lowercase characters. Sometimes columns with such names are used as the key columns. Make sure that the naming style is consistent. General INFORMATION_SCHEMA+system catalog base tables 2023-01-06 12:38 MIT License View
285 Columns defined in a subtable Find columns that have been added to a subtable, i.e., these were not defined in its immediate supertable. General INFORMATION_SCHEMA+system catalog base tables 2021-01-02 03:22 MIT License View
286 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 2021-03-20 14:08 MIT License View
287 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 2021-03-20 14:07 MIT License View
288 Columns of base tables that hold truth values that do not have a default value although they could have it (non-Boolean columns) Find columns of base tables that do not have type BOOLEAN but are used to record Boolean values. Based on column names these implement a state machine or record agreements. At the same time the columns do not have a default value. There are only two truth values - TRUE and FALSE - in case of two-valued logic. It should be possible to select one of these as the default value of the column. Problem detection INFORMATION_SCHEMA+system catalog base tables 2023-11-09 16:40 MIT License View
289 Columns that have the same name as some domain/type Use different names to avoid confusion. Problem detection INFORMATION_SCHEMA+system catalog base tables 2022-11-28 14:47 MIT License View
290 Columns that have the same name as their domain/type Find the columns that name is the same as the name of the type of the column or the domain of the column. Problem detection INFORMATION_SCHEMA+system catalog base tables 2022-11-30 13:04 MIT License View
291 Columns with array or user-defined type Find columns with an array or a user-defined type. Each columns should have the most appropriate data type. General INFORMATION_SCHEMA+system catalog base tables 2020-11-19 17:04 MIT License View
292 Columns with BOOLEAN type that do have a good name The prefic of the name should be "is_" or "has_" or "can_" (in English) or "on_" (in Estonian). Worse: agreed, kinnitatud. Better: is_agreement, on_kinnitatud. General INFORMATION_SCHEMA+system catalog base tables 2024-01-03 09:56 MIT License View
293 Columns with BOOLEAN type that do not have a good name The phrase "is_" or "has_" or "can_" (in English) or "on_" (in Estonian) should be used in the name - preferably in the beginning. Worse: agreed, kinnitatud. Better: contract_is_agreed, leping_on_kinnitatud. Perhaps the best: is_contract_agreed or is_agreement, on_leping_kinnitatud, on_kinnitatud. Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-01-03 09:56 MIT License View
294 Columns with BYTEA or OID type Find columns with BYTEA or OID type. These columns are potentially meant for storing large objects. Each columns should have the most appropriate data type. General INFORMATION_SCHEMA+system catalog base tables 2020-11-19 17:00 MIT License View
295 Columns with JSON, JSONB, or XML type Find columns with JSON, JSONB, or XML type. Each columns should have the most appropriate data type. General INFORMATION_SCHEMA+system catalog base tables 2020-11-19 17:01 MIT License View
296 Columns with only one value Find base table columns that contain only one value. Perhaps it is an unnecessary column. Having only one value is most likely inadequate for testing. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-02-25 17:29 MIT License View
297 Columns with tsvector type Find columns of base tables and materialized views that have tsvector type. General INFORMATION_SCHEMA+system catalog base tables 2023-12-22 12:41 MIT License View
298 Comments of routines Find comments of user-defined routines (functions or procedures) that are registered in the system catalog witht a COMMENT statement. Make sure that the comments give relevant, useful, and correct information. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
299 Completely overlapping foreign keys Find completely overlapping foreign keys, i.e., the same set of columns of a table is covered by more than one foreign key constraint. These constraints could refer to the same table/key or different tables/keys. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-02-25 17:30 MIT License View
300 Consistency of comments of routines Find user-defined routines that have a comment registered by the COMMENT statement and a comment within the routine body. Make sure that there are no inconsistencies between the comments. General INFORMATION_SCHEMA+system catalog base tables 2024-12-19 10:53 MIT License View