SQL语句的优化是性能调优的另一重要环节。

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SQL语句的优化是性能调优的另一重要环节。

优化SQL语句可以显著减少数据库的响应时间。

，避免使用SELECT *，而是只选择需要的列；避免在WHERE子句中使用非索引列；重写复杂的子查询为JOIN操作等。

除了SQL语句优化，数据库参数调整也是提升性能的关键。根据系统实际运行情况和业务需求，合理调整共享池、数据缓冲区等参数，可以显著提高数据库性能。





























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