PostgreSQL Query Catalog

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Filter Queries

Found 1040 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
501 Frequency of name components of database objects "Names in software are 90 percent of what make software readable. You need to take the time to choose them wisely and keep them relevant. Names are too important to treat carelessly. Names should not cause confusion." (Robert C. Martin, Clean Code) Names should be expressive. Find, what are the most popular components of the names (identifiers) of user-defined database objects, assuming, that the separator of the components is "_". Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
502 Frequent names of database objects "Names in software are 90 percent of what make software readable. You need to take the time to choose them wisely and keep them relevant. Names are too important to treat carelessly. Names should not cause confusion." (Robert C. Martin, Clean Code) Names should be expressive. Find the names (identifiers) of user-defined database objects that occur at least twice as frequently as a name occurs in average. Also make sure that there is no duplication in play. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
503 Frequent names of database objects by object type "Names in software are 90 percent of what make software readable. You need to take the time to choose them wisely and keep them relevant. Names are too important to treat carelessly. Names should not cause confusion." (Robert C. Martin, Clean Code) Names should be expressive. Find the names (identifiers) of user-defined database objects that occur at least twice as frequently as a name occurs in average in case of the particular type of database objects. Also make sure that there is no duplication in play. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
504 Full text search columns that have no gin or gist index Find columns of base tabels and materialized views with the type tsvector that do not have a gin or a gist index. These are the preferred index types for text search. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
505 Full text search columns with other type of index than gin or gist index Find columns of base tabels and materialized views with the type tsvector that do not have a gin or a gist index but have another type of index (e.g., b-tree). Gin and Gist are the preferred index types for text search. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
506 Function Upper or Lower is used in an index on a non-textual column Find function-based indexes that are based on function Upper or Lower but have been defined on a non-textual column. Such indexes support case insensitive search but in case of non-textual columns this does not have a meaning. Problem detection system catalog base tables only 2025-11-07 10:11 MIT License View
507 Generated stored base table columns Find generated stored columns in PostgreSQL base tables. The support of generated columns was added to PostgreSQL 12. These could be used to improve the performance of queries. General INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View
508 Generated stored base table columns duplicates another column in the table Find generated stored columns in PostgreSQL base tables that duplicate other columns in the table. Problem detection INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View
509 Generated stored base table columns that expression does not refer to any column Find generated stored base table columns that expression does not refer to any column of the table. It could be that there will be a constant value in every row in case of this column. The support of generated columns was added to PostgreSQL 12. Problem detection INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View
510 Grantable column privileges Find column privileges that the carrier of the privilege can in turn grant to others, i.e., the privileges have been given WITH GRANT OPTION. The number of privileges that can be passed on should be as small as possible. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
511 Grantable privileges on the database and its schemas, domains, types, languages, sequences, foreign data wrappers, and foreign servers Find privileges on the database and its schemas, domains, types, languages, sequences, foreign data wrappers, and foreign servers that the carrier of the privilege can in turn grant to others, i.e., the privileges have been given WITH GRANT OPTION. The number of privileges that can be passed on should be as small as possible. Problem detection system catalog base tables only 2025-11-07 10:11 MIT License View
512 Grantable roles Find roles that a member can grant to others, i.e., the role has been granted with ADMIN OPTION. The number of privileges that can be passed on should be as small as possible. Problem detection system catalog base tables only 2025-11-07 10:11 MIT License View
513 Grantable routine privileges Find routine privileges that the carrier of the privilege can in turn grant to others, i.e., the privileges have been given WITH GRANT OPTION. The number of privileges that can be passed on should be as small as possible. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
514 Grantable table privileges Find table privileges that the carrier of the privilege can in turn grant to others, i.e., the privileges have been given WITH GRANT OPTION. The number of privileges that can be passed on should be as small as possible. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
515 Grantable usage privileges Find usage privileges that the carrier of the privilege can in turn grant to others, i.e., the privileges have been given WITH GRANT OPTION. The number of privileges that can be passed on should be as small as possible. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
516 Granted roles Find membership relations between roles. General system catalog base tables only 2025-11-07 10:11 MIT License View
517 Grantees Database must be used by users who have minimal set of privileges for performing tasks. The query helps to find out as to whether some user/role other than PUBLIC and a superuser have rights to use tables and routines of the database. General INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View
518 Identical indexes Find indexes that are identical, i.e., have the same properties, including 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 2025-11-07 10:11 MIT License View
519 Identifiers that explicitly say that they carry no meaning Find identifiers that explicitly say that they carry no meaning. Such identifier is called "unnamed" or "anonymous". Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
520 Inappropriate field size or data type for column that strores database username Find columns of base tables that based on the default value of the column contain database username. However, the type of the column is not VARCHAR(63) or VARCHAR(128). Problem detection INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View