Using .show Queries to Understand and Optimize the KQL Sent From PBI to Kusto
Introduction
With the increasing popularity of Azure Data Explorer (Kusto) as a data platform, Power BI users are looking for ways to get the most out of the platform when connecting Power BI to Kusto. This article will discuss the use of .show queries to understand and optimize the KQL sent from PBI to Kusto. Specifically, we will explore the advantages of this approach, the types of queries available, and the common issues encountered when using it.
What is a .show Query?
A .show query is a Power BI query that can be used to understand and optimize the KQL query sent from Power BI to Kusto. It is a special type of query that allows Power BI users to see the underlying SQL query that is sent to Kusto, as well as the results of the query. This provides insight into how Power BI is interacting with Kusto and can be used to optimize the query for better performance.
Advantages of Using .show Queries
Using .show queries to understand and optimize the KQL sent from Power BI to Kusto can provide several advantages. First, it allows the user to see the underlying SQL query that is sent to Kusto. This can be used to identify any potential issues with the query and optimize it for better performance. Second, it enables the user to see the results of the query, which can provide valuable feedback on how the query performs and how it can be improved. Finally, using .show queries can provide visibility into the performance of the query, which can be used to troubleshoot any issues or identify potential optimizations.
Types of .show Queries
There are two main types of .show queries available in Power BI: show table and show query. Show table queries are used to view the underlying SQL query that is sent to Kusto, while show query queries are used to view the results of the query. Both types of queries can be used to understand and optimize the KQL sent from Power BI to Kusto.
Show Table Queries
Show table queries are used to view the underlying SQL query that is sent to Kusto. They provide visibility into the query and can be used to identify any potential issues with the query. Show table queries can also be used to optimize the query for better performance, as they provide insight into how the query is interacting with Kusto.
Show Query Queries
Show query queries are used to view the results of the query. They provide valuable feedback on how the query performs and can be used to identify potential optimizations. Show query queries can also be used to troubleshoot any issues that may arise with the query.
Common Issues with .show Queries
Using .show queries to understand and optimize the KQL sent from Power BI to Kusto can present some common issues. First, the query may take longer to execute than expected, which can cause delays in the report loading. Second, the query may generate an incorrect result, which can lead to inaccurate insights. Finally, the query may generate an error, which can cause the report to fail to load.
Conclusion
Using .show queries to understand and optimize the KQL sent from Power BI to Kusto can provide several advantages and can be used to identify potential issues and optimize the query for better performance. However, it can also present some common issues, such as slow query execution, incorrect results, and errors. It is important to be aware of these issues and troubleshoot them appropriately.
