I can pull a simple list from one table without any trouble. But the real database has a dozen tables tangled together, and the moment I try to join them the numbers come out wrong or the whole thing just hangs. I stare at the screen while everyone waits for a report I can't seem to run.
More people experience this than they realize.
You can write basic queries, but real, tangled databases quickly leave you stuck.
If this sounds familiar, the Library can help you find the bigger picture.