gpt4 book ai didi

Update From In MongoDb Driver c#(更新自MongoDB驱动程序c#)

转载 作者:bug小助手 更新时间:2023-10-28 11:22:59 24 4
gpt4 key购买 nike



How do I do the following in MongoDB Driver?

如何在MongoDB驱动程序中执行以下操作?


Update MyTable1 
set MyTable1.ColumnA = MyTable2.ColumnZ
from MyTable1
inner join MyTable2
on MyTable2.PrimaryKeyValue = MyTable1.ForeignKeyValue
Where MyTable1.ColumnA is null;

For example, a MongoDb Driver select equivalent query would look like this:

例如,MongoDB驱动程序SELECT EQUEMENT查询将如下所示:


            IMongoClient client = new MongoClient("mongodb://host:port/");
IMongoDatabase database = client.GetDatabase("InventoryPOS");
IMongoCollection<BsonDocument> collection = database.GetCollection<BsonDocument>("Collection1");

// Created with Studio 3T, the IDE for MongoDB - https://studio3t.com/

var options = new AggregateOptions() {
AllowDiskUse = true
};

PipelineDefinition<BsonDocument, BsonDocument> pipeline = new BsonDocument[]
{
new BsonDocument("$project", new BsonDocument()
.Add("_id", 0)
.Add("Collection1", "$$ROOT")),
new BsonDocument("$lookup", new BsonDocument()
.Add("localField", "Collection1.ForeignKeyId_Property")
.Add("from", "Collection2")
.Add("foreignField", "PrimaryKeyId_Property")
.Add("as", "Collection2")),
new BsonDocument("$unwind", new BsonDocument()
.Add("path", "$Collection2")
.Add("preserveNullAndEmptyArrays", new BsonBoolean(false))),
new BsonDocument("$project", new BsonDocument()
.Add("Collection1.PropertyA", "$Collection1.PropertyA")
.Add("Collection2.PropertyZ", "$Collection2.PropertyZ")
.Add("_id", 0))
};


I'm looking for a way to run an update using MongoDb Driver, c# where I can use a query like I have above to set "Collection1.PropertyA" to the value of "Collection2.PropertyZ"

我正在寻找一种使用MongoDB驱动程序c#运行更新的方法,其中我可以使用上面的查询将“Collection1.PropertyA”设置为“Collection2.PropertyZ”的值。


Does that help explain what I'm asking for help with?

这能解释我请求帮助的原因吗?


更多回答

Do you want to use update operaion in C# with MongoDB driver?

你想在C#中使用MongoDB驱动程序的更新操作吗?

Mongo has no sql, has no tables, has no join.

Mongo没有SQL,没有表,没有连接。

SQL to MongoDB Mapping Chart

SQL到MongoDB的映射图表

I've updated my question to hopefully better explain what I'm after.

我已经更新了我的问题,希望能更好地解释我想要什么。

优秀答案推荐
更多回答

24 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com