by: Tim Fountain |
last post by:
We've recently enabled slow query logging on a server and it's proving
interesting seeing which queries are bogging things down. This one is
puzzling me a little:
SELECT articleid, type,...
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by: Jesse Sheidlower |
last post by:
I'm struggling with speed issues on some queries that
I would have expected to be relatively fast. Perhaps
even more frustratingly, when I've tried to break
these down into their components, they...
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by: krystoffff |
last post by:
Hi
I would like to paginate the results of a query on several pages. So I
use a query with a limit X offset Y to display X results on a page,
ok.
But for the first page, I need to run the...
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by: Yonatan Goraly |
last post by:
I have a query that uses the same view 6 times. It seems that the
database engine is calculating the view each time.
The result is very poor performance. The same query takes 2 sec with MS
SQL,...
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by: Dave Weaver |
last post by:
I'm having severe performance issues with a conceptually simple
database. The database has one table, containing weather observations.
The table currently has about 13.5 million rows, and is being...
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by: CSN |
last post by:
I have a pretty simple select query that joins a table
(p) with 125K rows with another table (pc) with almost
one million rows:
select p.*
from product_categories pc
inner join products p
on...
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by: Zygo Blaxell |
last post by:
I have a table with a few million rows of temperature data keyed
by timestamp. I want to group these rows by timestamp intervals
(e.g. every 32 seconds), compute aggregate functions on the...
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by: rdnews |
last post by:
Dear group,
I got excellent help here a while back in optimizing a slow query, so I
thought I'd try again with another one...
I have a small table, around 3000 rows with two columns. One is a...
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by: Generale Cluster |
last post by:
Hello,
I need to extract the names of the employees which have not been active
during the last 3 months from the following tables
EMPLOYEES:
employee_id
name
COOPERATIVE
cooperative_id
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by: Charles Arthur |
last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
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by: ryjfgjl |
last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
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by: ryjfgjl |
last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
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by: BarryA |
last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
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by: Hystou |
last post by:
There are some requirements for setting up RAID:
1. The motherboard and BIOS support RAID configuration.
2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers,...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
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