When working with dynamic SQL queries, you will encounter situations in which you will work with temporary tables. Knowing whether a temporary table exists or not is vital and can save a lot of time whilst testing a query.
In the following example, I check if a temporary table named #T exists. If it does, I drop it:
IF OBJECT_ID('tempdb.dbo.#T', 'U') IS NOT NULL DROP TABLE #T; 
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