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Step-by-Step Guide: Creating a Client Computer and Joining It to a Domain (Hyper-V Lab Setup)
As part of building a realistic domain based environment, this lab demonstrates how to create a client computer and join it to an existing Active Directory Domain Services (AD DS) domain hosted on Windows Server 2019 , using Hyper V. A domain environment is incomplete without client machines. Joini…
PostgreSQL's documentation says it's "impossible to suppress nested-loop joins entirely" even with enable_nestloop off. What does that tell you about relying on planner hints to force a specific join algorithm?
That specific guarantee is documented only for `enable_nestloop`: turning it off only discourages the planner by making nested loops look artificially expensive in cost estimation, it can't hard-disable them, because for some queries a nested loop is the only viable plan at all (for example, certain correlated subquery shapes), so the planner will still use one if it must. `enable_hashjoin` and `enable_mergejoin` don't carry that same caveat, disabling either one actually can prevent the planner from choosing that join type, since a nested loop (or the other remaining method) is always available as a fallback plan. In practice, though, all three settings are best treated as a debugging/diagnostic tool for understanding planner behavior, not a reliable production mechanism for forcing a specific join algorithm, the actual fix for a bad plan is almost always better statistics (via `ANALYZE`) or a better index, not overriding the planner's method choice.