Does INNER JOIN performance depends on order of tables?
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Kartic
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Published on 2013-10-26T21:41:57Z
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2013/10/26
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A question suddenly came to my mind while I was tuning one stored procedure. Let me ask it -
I have two tables, table1 and table2. table1 contains huge data and table2 contains less data. Is there performance-wise any difference between these two queries(I am changing order of the tables)?
Query1:
SELECT t1.col1, t2.col2
FROM table1 t1
INNER JOIN table2 t2
ON t1.col1=t2.col2
Query2:
SELECT t1.col1, t2.col2
FROM table2 t2
INNER JOIN table1 t1
ON t1.col1=t2.col2
We are using Microsoft SQL server 2005.
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