> ## Documentation Index > Fetch the complete documentation index at: https://docs.pixeltable.com/llms.txt > Use this file to discover all available pages before exploring further. # ResultCursor > View Source on GitHub # class  pixeltable.ResultCursor Cursor that iterates over query results. Wraps a Query and yields Row objects one at a time, avoiding materializing all results into memory. A cursor transitions through three states: pending (created but not yet started), open (actively iterating), and closed (resources released). Iteration auto-opens and auto-closes the cursor, or you can use it as a context manager for explicit lifecycle control. ## method  close() ```python Signature theme={"theme":{"light":"light-plus","dark":"dark-plus"}} close() -> None ``` Release the underlying database transaction and query resources. Safe to call multiple times. Once closed, the cursor cannot be reopened. Also called automatically via the context manager protocol and on garbage collection. ## method  open() ```python Signature theme={"theme":{"light":"light-plus","dark":"dark-plus"}} open() -> None ``` Start the underlying query and prepare the cursor for iteration. Raises an error if the cursor is already open or has been closed. Called automatically when iterating if not already open.