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
581 Pairs of non-key column name and type pairs that have in different base tables a different default value Find non-key base table columns with the same name and type that have different default values. Be consistent. Columns with the same name and type shouldn't probably have different default values in case of different tables. "If you do something a certain way, do all similar things in the same way." (Robert C. Martin, Clean Code) Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-05-03 14:06 MIT License View
582 Pairs of non-key column name and type pairs that have in some base tables a default value and some cases not Find non-key base table columns with the same name and type that have in some cases a default value and some cases not. Be consistent. Columns with the same name and type should probably either always have a default value in case of different tables or never have a default value in case of different tables. "If you do something a certain way, do all similar things in the same way." (Robert C. Martin, Clean Code) Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-03-05 21:01 MIT License View
583 Parameter name contains 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 2023-01-06 18:03 MIT License View
584 Parameter name is the same as the name of a used column 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 2023-01-20 13:54 MIT License View
585 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 2023-01-20 13:54 MIT License View
586 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 2023-01-06 18:03 MIT License View
587 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 2023-01-14 20:21 MIT License View
588 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 2020-11-06 14:51 MIT License View
589 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 2022-06-09 13:21 MIT License View
590 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 or maximal 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 2021-02-25 17:29 MIT License View
591 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 2022-11-13 16:06 MIT License View
592 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 2023-01-20 13:40 MIT License View
593 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 2023-01-14 20:52 MIT License View
594 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 2023-01-14 20:52 MIT License View
595 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 2023-01-14 20:51 MIT License View
596 Perahaps Coalesce invocation is missing or Concat should be used Find user-defined routines and derived tables (views/materialized views) that have a subquery that invokes || operator but does not use Coalesce function to ensure that the arguments are not NULL. In PostgreSQL expression value || NULL returns NULL. In order to get value as the result, one has to replace NULL with a value (empty string) by using, for instance, Coalesce function (an alternative is to use a CASE expression). Instead of || + Coalesce, one could use Concat, Concat_ws, or Format functions for the concatenation. Problem detection INFORMATION_SCHEMA+system catalog base tables 2021-12-08 11:51 MIT License View
597 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 2020-11-08 20:55 MIT License View
598 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 2020-11-06 14:51 MIT License View
599 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 2024-12-21 16:25 MIT License View
600 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 2024-12-11 12:23 MIT License View