| |
by: Bruce D |
last post by:
Could someone please help to explain why the following query isn't using the
index...
explain select id from kbm where state = 'MA'
table type possible_keys key key_len ref rows Extra
kbm ALL State NULL NULL NULL 1000000 Using where
The field 'State' is Char(2). It has an index.
|
by: Thomi Baechler |
last post by:
Hello Everybody
I run the following query against to identical databases. Execution
time on the first DB is 0 seconds, on the other 6 seconds!
SELECT dbo.HRMABZ.EMPKEY , dbo.HRMABZ.CONNUMB
, dbo.HRM_CALENDER.Datum, dbo.HRMABZ.ABZTXT
FROM dbo.HRM_CALENDER INNER JOIN dbo.HRMABZ
ON dbo.HRM_CALENDER.Datum >= dbo.HRMABZ.ABZDATF
|
by: AG |
last post by:
I am able to run a query which runs FAst in QA but slow in the
application.It takes about 16 m in QA but 1000 ms on the
Application.What I wanted to know is why would the query take a long
time in the application when it runs fast on SQL server?
How should we try debugging it?
Ajay
|
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 same query with a count(*)
to know how many pages I will get (number total of rows/ X).
The problem is my query is very slow (maybe 5s) because there is much
|
by: Janross |
last post by:
I'm having trouble with a query that's prohibitively slow. On my free-standing
office computer it's fine (well, 2-4 seconds), but on the client's network, it
takes at least 5 minutes to run. Obviously not workable!
I know where the problem is, I just don't know how to fix it. The query calls
a function, and I assume it gets slow because the function runs on every
record.
So--is there a way to rewrite the function so it's quicker?...
|
| |
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
timestamp and the other is an integer. Each day, a number of entries
are created, with integers ranging from 1 to 5.
I need to find how many entries with the integer of 3 are created per
|
by: wizofaus |
last post by:
I previously posted about a problem where it seemed that changing the
case of the word "BY" in a SELECT query was causing it to run much much
faster.
Now I've hit the same thing again, where basically almost any change I
make to how the query is executed (so that it still performs the same
function) causes the performance to jump from a dismal 7 or 8 seconds
to instantaneous. It's a very simple query of the form:
SELECT Min(MyValue)...
|
by: funky |
last post by:
hello,
I've got a big problem ad i'm not able to resolve it. We have a server
running oracle 10g version 10.1.0. We usually use access as front end
and connect database tables for data extraction. We have been using
oracle client 10.1.0.2 with it's odbc for a while without problem. The
problem arose when we decided to reconnect all the tables and save
password. Some query became suddenly very slow. Then I've discovered
that the tables...
|
by: SaltyBoat |
last post by:
Needing to import and parse data from a large PDF file into an Access
2002 table: I start by converted the PDF file to a html file. Then
I read this html text file, line by line, into a table using a code
loop and an INSERT INTO query. About 800,000 records of raw text.
Later, I can then loop through and parse these 800,000 strings into
usable data using more code.
The problem I have is that the conversion of the text file, using a...
|
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 effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
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, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
| |
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 Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
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 protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
| |
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
