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Query Analyzer Tool (QAT) functions similarly to the standard SQL Server Query Analyzer application. The main feature of QAT is that it allows you to view plans in a hierarchical tree and save them for future reference.
It is often the case that when you are analyzing the execution plans of a complex query, the graphical plan in Query Analyzer becomes unusable due to its size, unless you have a very large display. QAT displays plans in a hierarchical tree, and highlights immediately .
Qat Has Other Features That Aim To Assist You In Writing / Optimizing SQL Queries, among them:
