This particular error usually happens throughout the Python MySQL Connector when a earlier question’s end result set has not been absolutely retrieved or closed earlier than a brand new question is executed. As an example, if a `SELECT` assertion returns a number of rows, and the appliance solely fetches the primary few utilizing `fetchone()` or `fetchmany()` with out iterating by all outcomes or calling `fetchall()`, subsequent queries might encounter this error. The underlying driver maintains a stateful connection to the database, and this unconsumed end result set disrupts the anticipated circulate of communication.
Correctly dealing with end result units is essential for stopping this frequent pitfall. It ensures the steadiness and predictability of database interactions, permitting for environment friendly useful resource administration throughout the database connection. Traditionally, this concern has arisen because of the variations in how consumer libraries and database servers handle communication state. The connector’s requirement to explicitly course of outcomes aligns with the server’s expectations, selling cleaner and extra dependable transactions.
