随笔分类 -  数据库

Mongodb Sort Operations
摘要：问题： 执行以下查询出错："Executor error during find command :: caused by :: Sort operation used more than the maximum 33554432 bytes of RAM. Add an index, or spe 阅读全文
posted @ 2021-01-25 16:10 petunsecn 阅读(416) 评论(0) 推荐(0)
mongodb使用小点
摘要：查询某个字段存在的语句 db.getCollection('tableName').find({"RouteInfo":{"$exists":true}}) 查询某个字段不存在的语句 db.getCollection('tableName').find({"RouteInfo":{"$exists" 阅读全文
posted @ 2020-02-10 10:17 petunsecn 阅读(140) 评论(0) 推荐(0)