The 26000 error code in PostgreSQL, known as invalid_sql_statement_name, typically occurs when a prepared statement with a specified name cannot be found during execution. This situation can arise when attempting to execute or deallocate a prepared statement that does not exist, either because it was never created, it has already been deallocated, or the session …
The 25006 error code in PostgreSQL refers to a read_only_sql_transaction error, which occurs when you attempt to perform a write operation (such as INSERT, UPDATE, DELETE, or DDL commands) within a transaction that is set to read-only mode. In read-only mode, the transaction is not allowed to modify any data. To diagnose and fix this …
The 25008 error code in PostgreSQL, held_cursor_requires_same_isolation_level, occurs when you try to use a cursor that was declared in a previous transaction with a different isolation level. Cursors in PostgreSQL can be declared as WITH HOLD, which allows them to continue to exist after a transaction commits, but they can only be used subsequently at …
The 23P01 error code in PostgreSQL corresponds to exclusion_violation, which indicates that an operation has violated an exclusion constraint. Exclusion constraints ensure that if any two rows are compared on the specified columns or expressions using the specified operators, not all of these comparisons will return true. To diagnose and fix a 23P01 exclusion_violation error, …
The 23001 error code in PostgreSQL, known as restrict_violation, indicates that an operation has violated a restriction defined in the database, typically associated with foreign key constraints. To diagnose and fix this issue, follow these steps: Remember, disabling constraints should be done with caution and usually only in a controlled environment, such as during a …
The 2F005 error code in PostgreSQL indicates that a function executed does not have a return statement, yet it is defined to return a value. In PostgreSQL, when you create a function that is supposed to return a value (other than void), you must have a RETURN statement that provides the value to be returned. …
The 28P01 error code in PostgreSQL corresponds to an “invalid_password” error, indicating that authentication has failed due to an incorrect password being supplied for a user account when attempting to connect to the database. To diagnose and fix the 28P01 error, consider the following steps: Here are some examples of how the 28P01 error might …
The 25P02 error code in PostgreSQL is associated with the “in_failed_sql_transaction” state. This error indicates that you are trying to execute an SQL command after a previous command in the same transaction has failed. Once a transaction encounters an error, it becomes ‘tainted’, and PostgreSQL will not allow any further SQL commands to be executed …
The 25004 error code in PostgreSQL signifies an “inappropriate_isolation_level_for_branch_transaction” condition. This error occurs when an attempt is made to set the transaction isolation level in a situation where it’s not permitted, such as within a subtransaction or after a transaction has already performed some operations. Here’s how to diagnose and fix this error: Here are …
The 25002 error code in PostgreSQL indicates a “branch_transaction_already_active” condition. This error occurs when an operation is attempted that requires a new transaction, but there is already a transaction active in the same session on a branch of a transaction. This is typically encountered in the context of transaction control within procedures or savepoints. Here …