Query goal: | Find cases where you store images and other media as files outside the database and store in the database only paths to the files. |
Notes about the query: | The query considers both column names in English and Estonian. |
Query type: | Problem detection (Each row in the result could represent a flaw in the design) |
Query reliability: | Medium (Medium number of false-positive results) |
Query license: | MIT License |
Data source: | INFORMATION_SCHEMA only |
SQL query: | Click on query to copy it
SELECT table_schema, table_name, column_name, data_type, character_maximum_length FROM INFORMATION_SCHEMA.columns WHERE data_type~*'(char|text)' AND column_name~*'(file|fail|path|tee|picture|photo|drawing|pilt|joonis|sound|heli|video)' AND column_name!~*'(type|size|profile|prefix|suffix|tyyp|suurus|http|ftp|fax|db_|(file|bin).*data|content|raw|sisu)' AND (character_maximum_length>4 OR character_maximum_length IS NULL) AND (table_schema, table_name) IN (SELECT table_schema, table_name FROM INFORMATION_SCHEMA.tables WHERE table_type='BASE TABLE') AND table_schema NOT IN (SELECT schema_name FROM INFORMATION_SCHEMA.schemata WHERE schema_name<>'public' AND schema_owner='postgres' AND schema_name IS NOT NULL) ORDER BY table_schema, table_name, ordinal_position; |
Collection name | Collection description |
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Find problems about base tables | A selection of queries that return information about the data types, field sizes, default values as well as general structure of base tables. Contains all the types of queries - problem detection, software measure, and general overview |
Category name | Category description |
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Database design antipatterns | Queries of this category provide information about possible occurrences of SQL database design antipatterns. |
Result quality depends on names | Queries of this category use names (for instance, column names) to try to guess the meaning of a database object. Thus, the goodness of names determines the number of false positive and false negative results. |
Structure of base tables | Queries of this category provide information about the structuring of base tables at the database conceptual level |
Reference |
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This is one of the antipatterns from the Bill Karwin's book of SQL antipatterns. See Chapter 12: Phantom Files. |
https://stackoverflow.com/questions/54500/storing-images-in-postgresql |