The 40P01 deadlock_detected error in PostgreSQL occurs when two or more transactions are waiting for each other to release locks, and none of them can proceed. PostgreSQL will detect this situation, abort one of the transactions to break the deadlock, and return this error to the client application. Here are some common scenarios that can …
The 3F000 invalid_schema_name error in PostgreSQL indicates that an operation has been attempted on a schema that does not exist in the database. This error can happen in various scenarios, such as when referencing a schema in a query, creating objects within a non-existent schema, or setting the search path to an undefined schema. To …
The 39P02 srf_protocol_violated error in PostgreSQL is related to set-returning functions (SRFs). This error occurs when a set-returning function (such as a function that returns a set of records or a table) is used improperly, violating the expected protocol for set-returning functions. A common scenario that leads to this error is when a set-returning function …
The 38004 reading_sql_data_not_permitted error in PostgreSQL is part of the SQL/PSM (Persistent Stored Modules) standard, which pertains to the SQL-invoked routines. This error occurs when an attempt is made to read SQL data from a context where it is not permitted, such as within a function that is defined to be SECURITY DEFINER and has …
The 34000 invalid_cursor_name error in PostgreSQL indicates that an invalid cursor name was specified in a statement. This typically occurs when a cursor name is not found in the current session because it either does not exist, has not been declared, or is not accessible due to scope or transaction boundaries. Here are some common …
The 2BP01 error code in PostgreSQL, dependent_objects_still_exist, indicates that you are trying to drop or alter an object on which other objects depend. This error is designed to prevent the accidental removal or modification of database objects that would leave dependent objects in an invalid state. To resolve this error, you need to identify the …
The 2F004 error code in PostgreSQL, reading_sql_data_not_permitted, occurs when a function that is declared to perform no SQL data reading (i.e., it is marked as NO SQL or MODIFIES SQL DATA) attempts to execute an SQL command that reads data from the database. This is a violation of the function’s declared behavior and PostgreSQL enforces …
The 2D000 error code in PostgreSQL, invalid_transaction_termination, is raised when there is an attempt to end a transaction (using COMMIT or ROLLBACK) in an improper context. This error commonly occurs when these transaction control commands are used within a subtransaction that has not been properly set up or when they are used within a procedural …
The 27000 error code in PostgreSQL, triggered_data_change_violation, indicates that an attempt has been made to modify data in a way that is forbidden by a trigger. Triggers in PostgreSQL can be set up to enforce certain rules or constraints on data modifications. When a trigger prevents an operation, it’s usually because the operation would violate …
The 25007 error code in PostgreSQL, schema_and_data_statement_mixing_not_supported, indicates that you are trying to execute schema and data definition statements within the same transaction while in a transaction block that has been set to READ ONLY. The PostgreSQL transaction mode READ ONLY is designed to prevent any changes to the database that would affect the data, …