注意:默认情况下对于 update 操作,输出的实时流数据也不会包含字段'fullDocument';但是可以在打开变更流的方法里传入可选参数full_document= 'updateLookup'实现输出的实时流数据包含'fullDocument'字段及值,如带参数语句:cursor = db.inventory.watch(full_document='updateLookup') 控制实时流数据的输出 在有些场景...
MongoDB Enterprise free-shard-0:PRIMARY> cursor.next() 2018-08-10T16:08:49.200+0800 E QUERY [thread1] Error: error hasNext: false : DBCommandCursor.prototype.next@src/mongo/shell/query.js:853:1 @(shell):1:1 此时已经创建好用于监听的cursor,此时还没有change event。 Insert Operate MongoDB ...
"operationType":"<operation>",// 包括:insert, delete, replace, update, drop, rename, dropDatabase, invalidate"fullDocument":{<document>},// 修改后的数据,出现在insert, replace, delete, update. 相当于oplog中的o字段"ns":{// db和collection的信息"db":"<database>","coll":"<collection"},"...
add column value to specific row in datatable Add comments in application setting. Add Embedded Image to Body of Email Add empty row to Datagridview Add EncodingType to Nonce element on SOAP Message (WS-Security) Add fonts to resources file Add hexidecimal character to a string Add IList to ...
Binding a wpf control size to its parent Binding ActualHeight and ActualWidth to ViewModel Binding can't find an ElementName? Why should that happen? Binding ComboBox SelectedIndex to Method in wpf Binding command to WPF menu from view model in MVVM Binding Cursor in MVVM Binding Custom property...
To retrieve the data change event from the cursor, iterate the change stream cursor. For information on the change stream event, see Change Events. The change stream cursor remains open until one of the following occurs: The cursor is explicitly closed. An invalidate event occurs; for example,...
该工具运行时,它允许INSERT,UPDATE,DELETE,REPLACE原始表。但是不允许TRUNCATE,ALTER,REPAIR OPTIMIZE或者其他方式对原表进行操作。 该工具适用于InnoDB表,MyISAM表,或以其他任何表级锁的存储引擎((MEMORY, ARCHIVE))。该工具工作原理是创建一个镜像表的同时,它慢慢与原始表同步。直到同步完成,要做到这一点,该工具必须...
The short version of these options comes from the command they are implementing. --insert-chars[=N], --insert-char[=N], --ich[=N] - Insert blanks at cursor, shifting the line right. --erase-display[=N], --ed[=N] - Erase in display. 0=below, 1=above, 2=all, 3=saved. --...
posFromChar prefColumnSize presenceDataField presenceDataSource presenceIndicatorAllowed presenceRefresh previewPartRef promptrect registerOverrideMethod replaceOnLookup resetUserSetting resolveAmbiguousReference scrollCursor searchAfterInput searchMode securityKey setCursorPos setFocus setSelection showContextMenu showLabe...
$changeStream 聚合阶段在 cursor.postBatchResumeToken 字段中包含恢复令牌。 该字段仅在使用 aggregate 命令时显示。 getMore getMore 命令在 cursor.postBatchResumeToken 字段中包含一个恢复令牌。 从MongoDB 4.2 开始,如果变更流聚合管道修改了事件的 _id 字段,则变更流会引发异常。 提示 MongoDB 提供了“代码段...