Cross Cluster and Cross Database Queries | Join Data Across Different Databases in Kusto Query (KQL)

 Topic: Cross Cluster and Cross Database Queries 

in this video we are going to learn how to perform cross database and across cluster queries in Kusto so that's very easy actually and if you have come with the background with sql server or oracle and other databases you have used across databases queries often and often if you want to do cross data servers whether you do link server in a sql server and all that here you will not be creating link server you will be just pointing onto this cluster and you will be able to doKusto Query Language is a powerful tool to explore your data and discover patterns, identify anomalies and outliers, create statistical modeling, and more. The query uses schema entities that are organized in a hierarchy similar to SQL's: databases, tables, and columns.

 // cross database and cross cluster queries  
 //create Table and Insert Sample Data in Azure Data Explorer DB for Testing  
 .create table TotalSale (  
   id: int   
   ,SalePersonFName: string  
   ,SalePersonLName : string  
   ,ProductName : string  
   ,ItemsSold : int  
   ,SoldPrice :real  
   ,SoldDate: date  
   ,City : string  
   ,State : string  
   ,Country : string  
   ,Region : string  
      //Insert data  
       .ingest inline into table TotalSale <|  
 11,Tamara,Tony,Cell Phone,2,1200,2015-03-03,Frankfurt,Hesse,Germany,Europe  
 3,Christy,Ladson,TV,3,1600,2015-04-02,High Point,NC,USA,North America  
 7,Chirag,Patel,Cell Phone,5,1500,2015-06-23,AhmadAbad,Gujrat,India,Asia  
 2,M,Raza,Cell Phone,2,800,2015-07-15,Charlotte,NC,USA,North America  
 4,John,Rivers,Laptop,5,2400,2014-03-09,Jersey City,NJ,USA,North America  
 1,Aamir,Shahzad,TV,1,700,2015-07-15,Charlotte,NC,USA,North America  
 12,aamir,Shahzad,TV,1,7000,2015-07-15,Charlotte,NC,USA,North America  
 // cross database queries  
 | join database("tbdb").TotalSale on id  
 //Cross cluster queries  
 | join (cluster('techbrotheradx').database("tbdb").TotalSale) on id  

Video Demo: Cross Cluster and Cross Database Queries


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