深度解析PolarDB数据库并行查询技术：加速SQL执行的关键问题和核心技术随着数据规模的不断扩大，用户SQL的执行时间越来越长，这不仅对数据库的优化能力提出更高的要求，并且对数据库的执行模式也提出了新的挑战。为了解决这个问题，许多数据库系统，包括Oracle、SQL Server等，都开始提供并行查询引擎的支持，以充分利用系统资源，达到加速SQL执行的效果。本文将深入探讨基于代价进行并行优化、....

问答 2022-12-27 来自：开发者社区

在硅谷买了polardb for mysql，数据库时区时区设置为墨西哥时区（-6）dms查询默认

在硅谷买了polardb for mysql，数据库时区时区设置为墨西哥时区（-6） dms查询默认为美东时间，如何使dms查询出的时间符合墨西哥时区这个是需要在哪里设置吗？

文章 2021-10-29 来自：开发者社区

PolarDB-X 1.0-API参考-1.0（2017版本）-数据库管理类 API-查询 DRDS 数据库

请求参数参数名类型是否必须说明ActionString是系统规定参数，取值：DescribeDrdsDBDbNameString是分布式数据库的名称DrdsInstanceIdString是DRDS 实例 ID返回值参数名类型描述公共返回值DbNameStringStatusString0-建库中 1-正常 2-建库失败 3-删除中 4-删除失败 5-迁移中 6-迁移失败CreateTimeSt....

文章 2021-10-29 来自：开发者社区

PolarDB-X 1.0-API参考-1.0（2017版本）-数据库管理类 API-查询 DRDS 数据库的 IP 白名单

请求参数参数名类型是否必须说明ActionString是系统规定参数，取值：DescribeDrdsDBIpWhiteListDrdsInstanceIdString是DRDS 实例 IDDbNameString是数据库名groupNameString是白名单分组，如果没有该参数，返回默认分组的 IP 列表返回值参数名类型描述公共返回值IpWhiteListListIP 列表，IP 类型为 St....

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数据库审计

满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。

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