PostgreSQL Query Catalog

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Filter Queries

Found 1041 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
681 Parameter name is the same as the name of a used column (ver 2) If the name of a routine parameter and the name of a column of a table that is used in the routine are the same, then it makes it more difficult to understand the code. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
682 Parameter name is the same as the routine name Find parameters that have the same name as the routine. The names may have different uppercase/lowercase characters. Make sure that the naming style is consistent. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
683 Paramtetes with an array type, XML, JSON, or JSONB type Find parameters of user-defined routines that type is an array type, xml, json, or jsonb type. Make sure that the parameter name matches the type (perhaps should be in plural). General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
684 Partial or case insensitive unique indexes Find partial or case insensitive unique indexes. These implement uniqueness constraints that are impossible to enforce with the help of SQL's regular UNIQUE constraint. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
685 Password is unique Find columns that potentially contains passwords and that participate in a unique constraint or index Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
686 Password should not be open text Find base table columns that name refers to the possibility that these are used to register passwords. Find the columns that have a CHECK constraint that seems to determine the minimal permitted length of the values in the column. Passwords in a database table must be hashed and salted. Checking the strength of the password by using a check constraint is in this case impossible and the check constraints that try to do it should be removed from the database. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
687 Patterns of the Boolean expressions of simple CHECK constraints Find patterns of the Boolean expressions of simple CHECK constraints (involve only one column). Do not solve the same task in different places differently. The same rule could be implemented with CHECK constraints that have different Boolean expressions. "If you do something a certain way, do all similar things in the same way." (Robert C. Martin, Clean Code) General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
688 Patterns of the names of columns of simple primary keys Find the patterns of the names of columns of simple primary keys. Make sure that the naming is consistent. Ideally, the names should indicate as to whether the column is a surrogate or a natural key column. PostgreSQL 14 added primary keys, unique constraints, and foreign keys to system catalogs. Thus the query was modified to exclude the results from the system catalog. General system catalog base tables only 2025-11-07 10:11 MIT License View
689 Patterns of the names of PRIMARY KEY, UNIQUE, CHECK, EXCLUDE, and FOREIGN KEY constraints as well as user-defined non-unique indexes that are associated with exactly one column Find patterns of the names of constraints and indexes. Make sure that the naming is consistent. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
690 Patterns of the names of PRIMARY KEY, UNIQUE, CHECK, EXCLUDE, and FOREIGN KEY constraints as well as user-defined non-unique indexes that are associated with two or three columns Find patterns of the names of constraints and indexes. Make sure that the naming is consistent. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
691 Patterns of the names of triggers and rules Find the patterns of the names of trigger and rule names. Make sure that the naming is consistent. General INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
692 Percentage of optional columns in each base table What is the percentage of optional columns (that permit NULLs) in case of each base table? It is better to prohibit the use of NULLs in as many columns as possible. Otherwise the results of queries may be misleading. Sofware measure INFORMATION_SCHEMA only 2025-11-07 10:11 MIT License View
693 Percentage of the total index storage size from the total database storage size (system catalog included) Get overview of disk usage. Sofware measure system catalog base tables only 2025-11-07 10:11 MIT License View
694 Perhaps 0 instead of o Find the names of database objects where 0 sign is perhaps used instead of o. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
695 Perhaps a CHECK constraint about required personal name components is missing Find base tables that have optional columns for recording both given name and surname and do not have a CHECK constraint that requires that at least one of the name components must be registered in case of each person. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
696 Perhaps a CHECK constraint about the combination of truth values is missing Find base tables that have at least two columns that have Boolean type and have at least one Boolean column that is not covered by a CHECK constraint involving more than one Boolean column. The Boolean columns possibly mean that we want to record data about states. Often the states depend on each other. For instance, if an order is archived it must be inactive. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
697 Perhaps a CHECK constraint about the order of events is missing Find base tables that have at least two columns that have DATE or TIMESTAMP (with or without time zone) type and do not have any associated CHECK constraint that involves two or more of these columns. The columns mean that we want to record data about events or processes, which often have a certain order. Hence, in case of each row of such a table the values in these columns must be in a certain order. For instance, the end of a meeting cannot be earlier than the beginning of the meeting. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View
698 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
699 Perhaps an inconsistent use of NO ACTION and RESTRICT in the foreign key declarations Find as to whether in case of foreign key constraints both the compensating actions RESTRICT and NO ACTION are used within the same database. If the same thing has to do in different places, then try to do it in the same way. Problem detection system catalog base tables only 2025-11-07 10:11 MIT License View
700 Perhaps an overcomplicated constraint expression that compares the result of a Boolean expression with a Boolean value Find table and domain CHECK constraints that compare the result of a Boolean expression with a Boolean value. If you can choose between two logically equivalent Boolean expressions choose the more simple expression. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-11-07 10:11 MIT License View