Hint-based TuningPlan Hint OptimizationJoin Order HintsJoin Operation HintsRows HintsScan Operation HintsSublink Name HintsHint Errors, Conflicts, and Other WarningsOptimizer GUC Parameter HintsHint for Selecting the Custom Plan or Generic PlanHint Specifying Not to Expand SubqueriesHint Specifying Not to Use Global Plan Cache同层参数化路径的Hint