Lets say we have 3 tables (actually I have 2 at the moment, but this example might illustrate the thought better):
This query was working fine when the database was small, but now that there are millions of rows in the database, I am re开发者_如何学Pythonalizing I should have looked at optimizing this earlier.It i
We have a number of machines which record data into a database at sporadic intervals.For each record, I\'d like to obtain the time period between this recording and the previous recording.
I need some help with TimesTen DB query optimization. I made some measures with Java profiler and found the code section that takes most of the time (this code section executes the SQL query). What is
I have to delete about 10K rows from a table that has more than 100 million rows based on some criteria. When I execute the query, it takes about 5 minutes. I ran an explain plan (the delete query con
I need your help to optimize the query to avoid using \"Using filesort\".The job of the query is to select all the articles that belongs to specific tag. The query is:
I have a search that is taking 10 seconds+ to execute!Keep in mind it is also searching over 200,000 products inthe database.I posted the explain and MySQL query here.
From a List of builtAgents I need all items with OptimPriority == 1 and only 5 items with OptimPriority == 0. I do this with two seperate queries 开发者_运维问答but I wonder if I could make this with
I have two types of queries I run often on two large datasets. They run much slower than I would expect them to.
Does anyone have experience of when SQL Server 2008 R2 is able to automatically match indexed view (also known as materialized views) that contain joins to a query?
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