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 …
The 23000 error code in PostgreSQL stands for an “integrity constraint violation.” This error occurs when an operation violates a constraint defined in the database schema, such as a unique constraint, foreign key constraint, not null constraint, etc. To diagnose and fix this error, you need to understand the specific type of constraint that has …
The 2F000 error code sql_routine_exception in PostgreSQL indicates that an exception has occurred within the context of an SQL routine. This routine could be a function, a stored procedure, or a trigger. The exception might be due to various reasons, such as attempting to perform an operation that is not allowed within the routine’s current …