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
501 Names of constraints (directly connected to a base table) that do not contain the table name Find constraints that are perhaps badly named. Table names help us to ensure the uniqueness of the names within a schema and make the names more expressive and user-friendly. Problem detection system catalog base tables only 2023-01-10 18:03 MIT License View
502 Names of database objects (regular identifiers) that contain $ Find names (identifiers) of user-defined database objects that are regular identifiers and contain the $ sign starting from the second position. "Note that dollar signs are not allowed in identifiers according to the letter of the SQL standard, so their use might render applications less portable." (PostgreSQL manual) Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 16:46 MIT License View
503 Names of database objects that are fully uppercase Full uppercase means screaming and it makes comprehending the names more difficult. Find the names (identifiers) of user-defined database objects that are fully uppercase. Because PostgreSQL stores regular identifiers lowercase in the system catalog it also means that these are delimited identifiers, i.e., these are case sensitive. Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:27 MIT License View
504 Names of database objects that are used to manage the state of main objects in the database "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) The naming must be consistent. One should avoid mixing synonyms like "seisund", "staatus", and "olek" in Estonian or "state" and "status" in English and stick with one term. General INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:23 MIT License View
505 Names of database objects that contain a digit Find the names (identifiers) of user-defined database objects that contain at least one digit. Names should be informative. Duplicates should be avoided. Digits in names are a possible sign of duplication of database objects or unclear names. General INFORMATION_SCHEMA+system catalog base tables 2024-12-21 16:45 MIT License View
506 Names of database objects that contain dollar sign Find names of database objects that contain a dollar sign ($) that is not the first symbol of the name. In PostgreSQL regular identifiers cannot start with $. However, $ can be used in other positions of the name. "Note that dollar signs are not allowed in identifiers according to the letter of the SQL standard, so their use might render applications less portable." (PostgreSQL documentation) Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 16:43 MIT License View
507 Names of database objects that contain two or more consecutive underscores or spaces as separators of name components Improve the readability of names. Find the names (identifiers) of user-defined database objects that contain two or more consecutive underscores or spaces that separate name components, i.e., these are not at the beginning and in the end of the name. Example of such names are person__id or "person id". Names with duplicate underscores use snake case style but duplication of underscores does not improve the usability of the name. Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:22 MIT License View
508 Names of database objects that end with an underscore Find names of database objects that end with a underscore. Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 16:42 MIT License View
509 Names of database objects that mix snake_case and camelCase/PascalCase Use consistent style of naming. Prefer snake_case. Regular identifiers are stored in the PostgreSQL system catalog in lowercase. Thus, if you use, for instance the identifier thisIsLongTableName, then, for instance,in the pg_dump result you will see the table name thisislongtablename. If the name in the system catalog is thisIsLongTableName, then it means that the name is a delimited identifier, i.e., case sensitive. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-05-05 07:07 MIT License View
510 Names of database objects that perhaps end with a sequence number Find the names (identifiers) of user-defined database objects that end with one or more digit. Names should be informative. Duplicates should be avoided. Digits in names are a possible sign of duplication of database objects or unclear names. Problem detection INFORMATION_SCHEMA+system catalog base tables 2025-05-05 07:08 MIT License View
511 Names of database objects that perhaps end with a sequence number (aggregate view) Find the number of names (identifiers) of user-defined database objects that end with one or more digit. Names should be informative. Duplicates should be avoided. Digits in names are a possible sign of duplication of database objects or unclear names. Sofware measure INFORMATION_SCHEMA+system catalog base tables 2025-06-27 13:03 MIT License View
512 Names of database objects that start with an underscore Improve the readability of names. Find the names (identifiers) of user-defined database objects that start with an underscore. This is not necessarily a mistake. For instance, parameter names could start with an underscore. On the other hand, it could be that the prefix is missing in the name. General INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:23 MIT License View
513 Names of database objects with four or more consecutive identical symbols Find names of database objects with four or more consecutive identical symbols Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:27 MIT License View
514 Names of database objects with perhaps too many digits Find the names of database objects where more than half the signs are digits. Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:20 MIT License View
515 Names of database objects with perhaps too many subcomponents (terms) "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) The number of subcomponents (terms) should not be too big. Find the names (identifiers) of user-defined database objects that perhaps contain too many subcomponents, assuming, that the separator of the components is "_". Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 16:44 MIT License View
516 Names of database objects with perhaps too many subcomponents (terms) that consist of only consonants Find names of database objects where the number of subcomponents (terms) that consist of only consonants is bigger than the number of subcomponents that contain at least one vowel. Problem detection INFORMATION_SCHEMA+system catalog base tables 2024-12-21 17:18 MIT License View
517 Names of indexes that do not contain the table name Find indexes that do not support a declarative constraint and that are perhaps badly named. Table names make the names more expressive and user-friendly. Problem detection system catalog base tables only 2023-01-10 18:13 MIT License View
518 Names of the columns of derived tables that have been given by the system Find columns of derived tables that name has been given by the system. The creators of the table should specify the name themselves to avoid ugly names and nasty surprises. Problem detection INFORMATION_SCHEMA+system catalog base tables 2022-11-15 16:48 MIT License View
519 Names of the password columns Find names of columns of base tables, views, and materialized views that contain passwords. Make sure that the naming is consistent, General INFORMATION_SCHEMA+system catalog base tables 2022-11-30 15:04 MIT License View
520 Names of triggers and rules that do contain the table name The names should contain table name in order to make the names better understandable. General INFORMATION_SCHEMA+system catalog base tables 2023-01-13 19:23 MIT License View