ignoreBlanks ignore fields with empty values in CSV and TSV --maintainInsertionOrder insert documents in the order of their appearance in the input source -j, --numInsertionWorkers= number of insert operations t
总所周知,MongoDB是一个NoSQL非数据库系统,即一个数据库可以包含多个集合(Collection),每个集合对应于关系数据库中的表;而每个集合中可以存储一组由列标识的记录,列是可以自由定义的,非常灵活,由一组列标识的实体的集合对应于关系数据库表中的行。下面通过熟悉MongoDB的基本管理命令,来了解MongoDB提供的DBMS的基本...
另一个比较基础的是对指定数据库的集合进行操作、管理和监控,可以通过查询db.mycoll.help()获取到: db.mycoll.help() DBCollection help db.mycoll.find().help() - show DBCursor help db.mycoll.count() db.mycoll.copyTo(newColl) - duplicates collection by copying all documents to newColl; no in...
If you select Ignore Errors and Proceed, data inconsistency may occur and your business may be exposed to potential risks. If a data record in the destination database has the same primary key value or unique key value as ...
SERVER-61427 Unique index builds can cause a loss of availability during commit due to checking many false duplicates SERVER-61466 Port the RSM { electionId, setVersion } ordering to scanning RSM SERVER-61479 Increase the number of retries to connect to a replica set following a stepdown SERVER...
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ingest options: --drop drop collection before inserting documents --ignoreBlanks ignore fields with empty values in CSV and TSV --maintainInsertionOrder insert documents in the order of their appearance in the input source -j, --numInsertionWorkers= number of insert operations to run concurrently ...
–ignoreBlanks ignore fields with empty values in CSV and TSV –maintainInsertionOrder insert documents in the order of their appearance in the input source -j, --numInsertionWorkers= number of insert operations to run concurrently (defaults to 1) ...
ignoreBlanks ignore fields with empty values in CSV and TSV --maintainInsertionOrder insert documents in the order of their appearance in the input source -j, --numInsertionWorkers= number of insert operations to run concurrently (defaults to 1) --stopOnError stop importing at first insert/...
SERVER-13802 Insert field validation no longer stops at first Timestamp() field. Replication SERVER-13993 Fixed: "log a message when shouldChangeSyncTarget() believes a node should change sync targets" SERVER-13976 Fixed: "Cloner needs to detect failure to create collection" Sharding SERVER-13...