OceanBase数据库设置了二级索引，但查看执行计划，没有反应出来,这种情况是为什么呢? 这种情况可能是因为查询优化器没有选择使用二级索引。在OceanBase数据库中，查询优化器会根据统计信息和代价模型来选择最优的执行计划。如果查询条件不符合二级索引的匹配规则，或者通过全表扫描的代价更低，那么查询优化器可能会选择全表扫描而...

文章 2024-01-14 来自：开发者社区

如何为PolarDB数据库设置透明数据加密（TDE）

如何为PolarDB数据库设置透明数据加密（TDE）透明数据加密（TDE，Transparent Data Encryption）是PolarDB数据库提供的一种实时I/O加密和解密功能，数据在写入磁盘之前进行加密，从磁盘读入内存时进行解密，而不会增加数据文件的大小。开发人员无需更改任...

问答 2024-01-07 来自：开发者社区

dataworks新增MongoDB数据源的鉴权数据库怎么设置？

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