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ComputerMike
Starting Member
18 Posts |
 Posted - 2010-03-31 : 18:39:56
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We have views based on Tables with Indexes(for security). The views have no indexes. Will a select on the view use the index? Also, could anyone comment on the use of SQL functions in the where clause of a procedure that selects from the the view (that doesn't have an index , but is based on table that does). Hope I wasn't too confusing.  |
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tkizer
Almighty SQL Goddess
38200 Posts |
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ComputerMike
Starting Member
18 Posts |
Posted - 2010-03-31 : 18:48:34
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| I use isnull function in where claues.....where isnull(mydate,'2050-12-31') |
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tkizer
Almighty SQL Goddess
38200 Posts |
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dinakar
Master Smack Fu Yak Hacker
2507 Posts |
Posted - 2010-03-31 : 21:40:52
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quote:
Originally posted by ComputerMike
I use isnull function in where claues.....where isnull(mydate,'2050-12-31')
And that will have performance implications. If you had an index on "mydate" column it would not be used. Throwing a function around a column makes the value indeterministic. So SQL Server will not use the index and will do a scan instead.Dinakar Nethi************************Life is short. Enjoy it.************************http://weblogs.sqlteam.com/dinakar/ |
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