Comments on: A Fast Way to Update Large Amount of Data in SQL Server With Select Into Statement http://www.siusic.com/wphchen/a-fast-way-to-update-large-amount-of-data-in-sql-server-with-select-into-statement-112.html Random thoughts and news by Andrew Chen and friends Fri, 30 Jul 2010 21:42:56 +0000 http://wordpress.org/?v=2.5 By: Andrew http://www.siusic.com/wphchen/a-fast-way-to-update-large-amount-of-data-in-sql-server-with-select-into-statement-112.html#comment-23049 Andrew Wed, 16 Apr 2008 13:32:11 +0000 http://www.siusic.com/wphchen/a-fast-way-to-update-large-amount-of-data-in-sql-server-with-select-into-statement-112.html#comment-23049 That's probably true but I didn't have that observasion. If anyone can provide some input on what is the underlying difference between "select * into table from" and "insert into table select * from" it will be great. That’s probably true but I didn’t have that observasion. If anyone can provide some input on what is the underlying difference between “select * into table from” and “insert into table select * from” it will be great.

]]> By: Scott http://www.siusic.com/wphchen/a-fast-way-to-update-large-amount-of-data-in-sql-server-with-select-into-statement-112.html#comment-22132 Scott Tue, 08 Apr 2008 05:43:59 +0000 http://www.siusic.com/wphchen/a-fast-way-to-update-large-amount-of-data-in-sql-server-with-select-into-statement-112.html#comment-22132 While I appreciate this is a time saving approach, and your testing indicates it has improved speed 10 fold...it may be worth mentioning that "Select Into" clauses are very inefficient. I carried out some similar tests on 2 million rows, and found Select Into took a lot longer than an Insert Into...Select From query. While I appreciate this is a time saving approach, and your testing indicates it has improved speed 10 fold…it may be worth mentioning that “Select Into” clauses are very inefficient.

I carried out some similar tests on 2 million rows, and found Select Into took a lot longer than an Insert Into…Select From query.

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