PostgreSQLERROR 42P01
PostgreSQL: Relation Does Not Exist
PostgreSQL raises error 42P01 when the query references a table, view, sequence, or index that cannot be found in the current search_path. PostgreSQL is case-sensitive for unquoted identifiers.
Example Query
SELECT * FROM Users; -- Fails because the table was created as "users" (lowercase)
Common Causes
- 1Table was created in a different schema not on the search_path
- 2Identifier was created with double quotes preserving uppercase, but queried without quotes
- 3Migration has not been run in this environment
How to Fix It
Check the schema with \dt in psql or query information_schema.tables. Set the search_path with SET search_path TO myschema, public; or qualify the table: schema.table_name. Use lowercase identifiers to avoid quoting issues.
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