Method UpdateChatDebugStep

coderd/database/querier.go:1208–1208

Uses COALESCE so that passing NULL from Go means "keep the existing value." This is intentional: debug rows follow a write-once-finalize pattern where fields are set at creation or finalization and never cleared back to NULL. The @now parameter keeps updated_at under the caller's clock, matching the

(ctx context.Context, arg UpdateChatDebugStepParams)

	// parameter keeps updated_at under the caller's clock, matching
	// the injectable quartz.Clock used by FinalizeStale sweeps.
	UpdateChatDebugStep(ctx context.Context, arg UpdateChatDebugStepParams) (ChatDebugStep, error)
	// Bumps the heartbeat timestamp for the given set of chat IDs,
	// provided they are still running and owned by the specified
	// worker. Returns the IDs that were actually updated so the