The Query Structure Tree represents the structure of your query in a compact, hierarchical tree format. Using it, you may jump to any Union, Sub-query, Derived table or any other part of the query with a single mouse click. This feature is extremely useful when developing complex SQL queries.
Use the Application Settings Dialog to hide unnecessary nodes. For example, you may hide Objects and/or Expressions nodes and show only sub-queries structure of the query.
Query Structure Tree