Witryna15 lip 2009 · the following is taken from the excellent series of books about Microsoft SQL Server, Inside Microsoft SQL Server 2005: T-SQL Querying which can be found here. (Step 8) SELECT (Step 9) DISTINCT (Step 11) … http://www.gregreda.com/2013/06/03/join-vs-exists-vs-in/
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WitrynaWith an inner join, column values from one row of a table are combined with column values from another row of another (or the same) table to form a single row of data. If … Witryna16 cze 2009 · 67 ms is way too fast for 100,000 reevaluations of any query. Let's look into the plan: SELECT Merge Join Index Scan (t_inner) Stream Aggregate Index Scan (t_outer) Since val1 is indexed in both tables, the optimizer chose Stream Aggregate to filter out the possible duplicates of t_outer.val. kitchen on 6th
Which of two ways of coding an Inner join is faster?
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