Viewing 15 posts - 3,991 through 4,005 (of 7,613 total)
Look for articles / books by Itzik Ben-Gan. Yes, a book(s) will cost you a little money, but it will be worth it!
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 19, 2017 at 9:34 am
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 18, 2017 at 9:06 am
For SQL Server, you should ignore the INFORMATION_SCHEMA views and use system views instead, such as sys.tables, sys.columns, etc..
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 17, 2017 at 12:32 pm
You should use "total_pages" rather than "used_pages" because the table may currently take up more space, sometimes a lot more space, than it is actually using.
For example, a...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 16, 2017 at 8:13 am
I suggest reviewing the overall index definitions and stats on the table. Perhaps even the clustering index needs changed to get the best overall performance. If the clus index does...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 13, 2017 at 1:15 pm
SQL 2005 doesn't have a time data type. It looks like one of your columns in SQL 2012 is time. That may cause a conversion problem unless you explicitly adjust...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 12, 2017 at 3:45 pm
There are times when multiple, narrower indexes would overall perform better. But that's more difficult to accurately determine and code for. You must also continue to monitor it, because adding...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 12, 2017 at 2:18 pm
chuck.hamilton (1/10/2017)
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 10, 2017 at 11:35 am
In old-style SQL, outside of HAG, you could use OPENROWSET to reach a remote server without having to create a linked server. That may or may not work in...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 10, 2017 at 10:24 am
I specialize in tuning, particularly index tuning, and I tend strongly toward the larger, shared index rather than separate indexes. Be aware that if the index needs scanned, multiple...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 10, 2017 at 10:21 am
Never disable autogrowth on tempdb -- it could bring the entire instance to a waiting state. Instead, put alert(s) into place to make sure you are made aware if/when...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 10, 2017 at 10:17 am
I'd suggest an inline-table-valued-function. That will give you performance, reusability and flexibility.
Although I can't see that CASE statement ever affecting the query plan, unless the result of the CASE...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 9, 2017 at 12:06 pm
Is there already a clustered index on the table?
If not, and ID is an identity value, are you sure it's best to cluster the table on ID?? What do...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 9, 2017 at 11:55 am
I agree that the join hints should only be used if you truly understand them.
The critical thing would seem to be that "T3" should almost certainly be clustered on (...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 9, 2017 at 9:07 am
Also, look at the size of the log file in the original db. When you restore, the entire log file must be pre-formatted (even if IFI is on --...
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".
January 5, 2017 at 11:20 am
Viewing 15 posts - 3,991 through 4,005 (of 7,613 total)