Estimate SQL Server tempdb space for a query

5 pts.
Tags:
Space allocation
SQL Server
SQL Server Data Storage
TempDB
Database - MS Sql Server How to estimate the amount of space that a query uses in tempdb? I am trying to join certain transaction tables that are really huge - about 300GB. Is there a way I can compute the space that the query might take in tempdb based on factors like: 1. Columns retrieved 2. Join conditions 3. Indexes on the tables.

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