6
votes
5answers
567 views

Performance tuning a Great Circle distance calculation

I have a query that I am using to find locations that are within 1km of a known point. To do this, I am using the Spherical Law of Cosines formula with my latitude and longitudes. Currently, the ...
5
votes
2answers
2k views

What can I do to speed up this SQL Query?

I've created this SQL query with the help of @Dems :-) Here is some detail, I tried to make a SQLFiddle but I kept getting errors with my variables... This works in Sql Server 2008... My question ...
2
votes
1answer
262 views

SQL Server 2008 R2 DETA Error: Can not get minimal database information in allotted time

I have a 18,6 GB SQL Server 2008 R2 profiler trace file. Trace file recorded at tuning profile. When I submit this trace file to database engine tuning advisor I get this error: Error: Can not get ...
5
votes
2answers
964 views

DTA Recommends to CREATE STATISTICS

I just ran a T-SQL query through DTA and one of the recommendations is to CREATE STATISTICS on one of the columns that is part of many of the queries in the SQL code file. My question is, how exactly ...