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by: Bill |
last post by:
In an effort to improve the speed of queries against my main table,
I'll be indexing a column whose data type is varchar(50).
Would I be better off (better performance) if I changed the column's
data type to some numeric type? I would have to update the column's
data to accomodate this, but I would do it if this offers a
performance gain....
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by: twdo |
last post by:
Let me see if I can explain my situation clearly.
I have a table with the columns:
answer_id, question_id, member_id, answer
- answer_id is the primary key for the table.
- question_id relates to another table with questions for a user. The
table holds the question and the possible choices in a varchar field
separated by a delimiter.
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by: Alex Martinoff |
last post by:
I'm wondering if it's possible to have a query construct a column
where the value of the column at each row is taken from another field
in that same row. For example, suppose you have a table like:
create table users (
uid serial,
nickname varchar(20),
realname varchar(30),
prefname int2,
primary key (uid)
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by: UDBDBA |
last post by:
Hi:
we have column with GENERATED ALWAYS AS DEFAULT. So, we can insert into
this column manually and also let db2 generate a value for this column.
Given a scenario, how can i find the NEXTVAL for this identity column?
We can do "VALUED NEXTVAL FOR SEQUENCE", but for identity how can it be
done?
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by: Steve Jorgensen |
last post by:
Hi all,
I've just finished almost all of what has turned out to be a real bear of a
project. It has to import data from a monthly spreadsheet export from another
program, and convert that into normalized data. The task is made more
difficult by the fact that the structure itself can vary from month to month
(in well defined ways).
So,...
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by: Scott Goodwin |
last post by:
In the following example:
create table parent (
id integer unique not null,
name varchar(24)
);
create table child (
first_name varchar(256),
last_name varchar(256)
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by: Beowulf |
last post by:
I was just messing around with some ad hoc views and table returning
UDFs today so I could look at and print out data from a small table
and noticed something strange.
If I stick my select statement into a View the columns are returned in
the order I specify in the SELECT, but if the same statement is in a UDF
(so I can specify a...
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by: bbcrock |
last post by:
I have three tables with a relationship I've never worked with
before. Can anyone suggest/comment on the best way to create a third
normal form relationship between these tables?
The tables basically are:
TRAIN (TRAIN_ID and 15 columns about train specs, etc)
TRUCK (TRUCK_ID and 12 columns about truck specs, etc)
TRANSPORTATION_ITEM...
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by: Yas |
last post by:
Hello,
I was wondering if anyone can help me figure something out.
Is it possible to do a querey in MS SQL server and have the results
returned so that each result in each row is preceeded by the column
name?
eg. instead of usual output -colName1, colValue1,
colName2,colValue2,colName3,colValue3 ?
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main...
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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 effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language...
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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, 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. ...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that...
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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 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...
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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...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating...
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