PostgreSQL Query Catalog

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Filter Queries

Found 1024 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
701 Surrogate key columns that do not follow the naming style Find surrogate key columns that name does not end with "id_" or start with "id_". Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
702 Table functions with OFFSET Find table functions that use OFFSET. OFFSET method is a common way for implementing pagination. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
703 Table has both state and status columns Find tables that contain both a state and a status column. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
704 Table has multiple columns for free-form descriptions Find tables that contain multiple columns for free-form textual descriptions. Make sure that the names of columns are understandable and sufficiently different. Make sure that there are no duplicate columns. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
705 Table, routine, and usage privileges that have been granted to a superuser Find table, routine, and usage privileges 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 INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
706 Tables without columns Do not have in a database elements that are not useful. PostgreSQL permits tables with no columns. Such tables can be used to implement Boolean variables (tables TABLE_DEE and TABLE_DUM). On the other hand, such tables might be a result of database evolution, where developers have not noticed that they have dropped all the columns of a table or have not noticed that they have created such a table in the first place. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
707 Tables with the same name in different schemas Find tables with the same name in different schemas. Make sure that this is not a duplication. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
708 Textual columns that have a secondary index but the operator class for the column does not support pattern matching Find indexed textual columns where the indexing does not consider the possibility of pattern-based search. Such columns do not have an index where the used operator class makes the index suitable for use by queries involving pattern matching expressions. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
709 TG_ARGV is missing Write correct code. If you pass arguments to a trigger function, then the function should use the arguments. TG_ARGV[]: "Data type array of text; the arguments from the CREATE TRIGGER statement. The index counts from 0. Invalid indexes (less than 0 or greater than or equal to tg_nargs) result in a null value." (PostgreSQL documentation) Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
710 The generator of surrogate key values can output the same value more than once Find surrogate keys where the generator can output the same value more than once. Key values must be unique, i.e., at some point the generator will prevent adding new rows to the table. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
711 The generic names (columns) (aggregate view) Find the too generic column names and the number of their occurrences. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
712 The generic names (columns) (aggregate view)(2) Find the number of too generic base table and view column names. Do not differentiate between base table and view columns to determine what name is generic. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
713 The longest names of database objects Find the TOP 3 longest (identifiers) names of user-defined objects. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
714 The longest 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 TOP 3 longest (identifiers) names of user-defined objects by their type. These could be the first candidates of renaming in order to give to database objects better names. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
715 The name of the routine does not match with the action of the routine Find user-defined non-trigger SQL and PL/pgSQL routines where the beginning of the name of the routine indicates a certain action inside the routine (INSERT, UPDATE, or DELETE) but there is no such statement in the routine body. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
716 The number and percentage of different names of database objects Names should be expressive. Find the number of different names used in a database as well as the number of named database objects, and the percentage of different names from all the names. Names should be expressive. Different objects should have different names. The smaller the percentage the less descriptive are the names in the database. Find the number of different names (identifiers) of user-defined database objects and compare it with the total number of database objects. The values could be used to compare different databases. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
717 The number and percentage of different 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. Different objects should have different names. The smaller the percentage the less descriptive are the names in the database. Find the number of different names (identifiers) of user-defined database objects by the object type and compare it with the total number of database objects with this type. The values could be used to compare different databases. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
718 The number of columns based on table type Find the total number of columns in the different types of tables as well as average number of columns in the tables as well as minimal and maximal number of columns. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
719 The number of commented routines Find the number of commented routines based on the way how the comments have been added (as a COMMENT object or as a comment in the routine body). Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
720 The number of constraints by schema, by type, and in total Find the number of constraints in different schemas. The number of constraints in a database gives an indication about the state of enforcing constraints at the database level. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View