Write and read workflow data

So far, every workflow you've built has been stateless — data disappears after each run. Now it's time to give your workflows memory. Acme Corp needs a weather log that persists between runs so the pipeline can track what it's already processed.

You'll create an n8n data table, write weather data to it using a Data Table Insert row node, read it back with a Data Table Get row(s) node, and use the retrieved data to drive downstream logic with an If node.