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How does Kusto query ingestion work in azure?

How does Kusto query ingestion work in azure?

These commands execute a query or a control command and ingest the results of the query into a table. The difference between these commands, is how they treat existing or nonexistent tables and data.

How are filters propagated in Kusto query language?

Kusto is optimized to push filters that come after the join, towards the appropriate join side, left or right, when possible. Sometimes, the flavor used is innerunique and the filter is propagated to the left side of the join. The flavor will be automatically propagated and the keys that apply to that filter will always appear in the output.

How to set, append, replace in Kusto query?

The database has an existing table named “MyExtents”. Append data to an existing table called “OldExtents” in the current database that has a single column, “ExtentId”, and holds the extent IDs of all extents in the database that have been created more than 30 days earlier.

Is the target table preserved in Kusto query?

It drops the existing data shards or creates the target table, if doesn’t already exist. The table schema will be preserved unless one of extend_schema or recreate_schema ingestion properties is set to “true”.

How to query my application insights logs from kusto.explorer?

We have a private preview for Azure Data Explorer (ADX) Proxy that enables you to treat Log Analytics / Application Insights as a virtual cluster, query it using ADX tools and connecting to it as a second cluster in cross cluster query. Since its a private preview you need to contact adxproxy@microsoft.com in order to get enrolled.

How to work with strings in Kusto query language?

The following sections give examples of how to work with strings when using the Kusto Query Language. Strings and how to escape them. String values are wrapped with either single or double quotes. Add the backslash (\\) to the left of a character to escape the character: \ for tab, \ for newline, and \\” for the single quote character.

Can you get access to the Kusto cluster?

Though Kusto (ADX, Azure Data Explorer) powers Application Insights (and many other services), there is a multi-tenancy layer. So, Kusto.Explorer cannot get access to underlying Kusto cluster.

What does Kusto mean in Azure Data Explorer?

Rows from all tables in the database whose name starts with K, and in which any column includes the word Kusto. The number of distinct users that have produced either a Query event or a Command event over the past day. In the result, the ‘SourceTable’ column will indicate either “Query” or “Command”.