Kusto Explorer Code Refactoring
Similar to other IDEs, Kusto.Explorer offers several features to KQL query editing and refactoring.
Rename variable or column name
Clicking Ctrl+R, Ctrl+R in the Query Editor window will allow you to rename currently selected symbol.
See below snapshot that demonstrates the experience:

Extract scalars as let expressions
You can promote currently selected literal as let expression by clicking Alt+Ctrl+M.

Extract tabular statements as let expressions
You can also promote tabular expressions as let statements by selecting its text and then clicking Alt+Ctrl+M.
