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
941 All gin indexes Find indexes with less common access methods. Gin indexes are, for instance, used to speed up PostgreSQL's built in full text search. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
942 All parameters with DEFAULT values Find parameters of user-defined routines that have a default value. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
943 All partial indexes Find indexes to a subset of table rows. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
944 All sequence generators Find all sequence generators. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
945 All system-defined TOAST-able types Find system-defined types in case of which the system can use the TOAST technique, i.e., save the value in a compressed form or store it in a automatically-created secondary table, which is hidden from the database user (TOAST table). General system catalog base tables only 2020-11-06 14:51 MIT License View
946 All user-defined TOAST-able types Find user-defined types in case of which the system can use the TOAST technique, i.e., save the value in a compressed form or store it in a automatically-created secondary table, which is hidden from the database user (TOAST table). General system catalog base tables only 2020-11-06 14:51 MIT License View
947 AND takes precedence over OR Make sure that Boolean expressions take into account precedence rules of Boolean operators. AND operator has precedence over OR operator. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
948 Base table columns for storing username, password, and salt Find base table columns that name refers to the possibility that these are used to register usernames, passwords, and salt. Password should not be open text. It should be a hash value that has been hashed by using salt. General INFORMATION_SCHEMA only 2020-11-06 14:51 MIT License View
949 Base table columns where TOASTing is possible Find all base table columns in case of which the system can use TOAST technique. General system catalog base tables only 2020-11-06 14:51 MIT License View
950 Base table columns where TOAST-ing strategy has been changed Find base table columns in case of which the system can use TOAST technique (due to the data type of the column) and where the toasting strategy has been changed so that it is different than the default strategy determined by the type. Make sure that the new strategy is optimal. General system catalog base tables only 2020-11-06 14:51 MIT License View
951 Base table columns with a composite type Find base table columns with a composite type. Think through as to whether a column with a composite type could be replaced with a separate table. General system catalog base tables only 2020-11-06 14:51 MIT License View
952 Base table columns with an array type Find base table columns with an array type. Think through as to whether a column with an array type could be replaced with a separate table. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
953 Base table columns with CHAR(n) or VARCHAR(n) type Find base table columns with CHAR(n) or VARCHAR(n) type and make sure that n is not too big or too small. Also make sure that you do not use CHAR(n) in case of columns that have to keep variable length strings. "Values of type character are physically padded with spaces to the specified width n, and are stored and displayed that way" (https://www.postgresql.org/docs/current/datatype-character.html) General INFORMATION_SCHEMA only 2020-11-06 14:51 MIT License View
954 Base table columns with CITEXT type Find base table columns with CITEXT type and make sure that case insensitivity is really needed in case of this column. General system catalog base tables only 2020-11-06 14:51 MIT License View
955 Base table columns with DECIMAL (p, s) or NUMERIC (p, s) type Find base table columns with DECIMAL (p, s) or NUMERIC (p, s) type and make sure that precision p and scale s are not too big or too small. General INFORMATION_SCHEMA only 2020-11-06 14:51 MIT License View
956 Base table columns with one of the following types: BIGINT, INTEGER, TEXT, or VARCHAR without max character length Each column should have the most appropriate data type. Developers sometimes misuse BIGINT, INTEGER, TEXT or VARCHAR type in places where a type that permits smaller values would be more appropriate and semantically descriptive. General INFORMATION_SCHEMA only 2020-11-06 14:51 MIT License View
957 Base table columns with SMALLINT or BOOLEAN type Each column should have the most appropriate data type. Developers sometimes forget to use SMALLINT type even if it is logically the best choice. Developers also sometimes forget to use BOOLEAN type and instead invent something. General INFORMATION_SCHEMA only 2020-11-06 14:51 MIT License View
958 Base table FILLFACTOR is not 100 Find all base tables where FILLFACTOR is not 100, i.e., the default value. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
959 Base table has a national identification number as a key Find base table columns that name refers to the possibility that these are used to register national identification numbers (personal codes). Find the columns that constitute a key of a table. This in turn enforces a (restrictive) business rule that all persons of interest come from one country. Make sure that the enforced constraint is valid, i.e., there is indeed such rule in the domain. General INFORMATION_SCHEMA+system catalog base tables 2020-11-06 14:51 MIT License View
960 Base tables created based on a type Find base tables that have been created based on a composite type and thnk through as to whether it was really needed. General system catalog base tables only 2020-11-06 14:51 MIT License View