by: John Simmons |
last post by:
How is it that even though I have the column "username" in my database set
as a Primary key, using my PHP script to add new users to the database works
without any errors even when signing up using...
|
by: Ghulam Farid |
last post by:
Hi
i have a table with primary key defined on col1 and col2. now i want to
have col3 also included in primary key. when i alter the table it gives
me error for duplicate rows. there is an option...
|
by: Mavis Tilden |
last post by:
Hi all,
So I've been reading the newsgroups, and reading a few books trying to learn
SQL and SQL Server 2000. The books tell me I need a Primary Key, and that
every table should have one. I know...
|
by: 101 |
last post by:
Taking a course on SQL. They are saying you can get better performance by
having multiple files for a group.
They then graphically show an example of "Primary" with multiple data files.
I have...
|
by: serge |
last post by:
I ran into a table that is used a lot. Well less than
100,000 records. Maybe not a lot of records but i believe
this table is used often. The table has 26 fields, 9 indexes
but no Primary Key at...
|
by: shenanwei |
last post by:
I have a primary server and backup server located in different physical
sites.
The primary server is live and ship logs to backup site every 5
minutes.
The primary server is being full online...
|
by: misscrf |
last post by:
Ok I have 2 issues.
1) I have a main candidate form with 2 subforms on a tab control:
http://www.geocities.com/misscrf/images/contactcontinouscheckbox.jpg
I have been encouraged to add these...
|
by: Thomas A. Anderson |
last post by:
I am a bit confused in creating a composite primary key. I have three table
with two of the tables containing primary keys. I have two of the tables
(each with a primary key) having one to many...
|
by: Challenge |
last post by:
Hi,
I got error, SQL1768N Unable to start HADR. Reason code = "7", when I
tried to start hadr primary database. Here are the hadr configuration
of my primary db:
HADR database role ...
|
by: Peter |
last post by:
I am interested in informed feedback on the use of Constraints, Primary Keys
and Unique.
The following SQL statement creates a Bands tables for a database of
bookings Bands into Venues, where the...
|
by: aa123db |
last post by:
Variable and constants
Use var or let for variables and const fror constants.
Var foo ='bar';
Let foo ='bar';const baz ='bar';
Functions
function $name$ ($parameters$) {
}
...
|
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...
|
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...
|
by: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
|
by: Sonnysonu |
last post by:
This is the data of csv file
1 2 3
1 2 3
1 2 3
1 2 3
2 3
2 3
3
the lengths should be different i have to store the data by column-wise with in the specific length.
suppose the i have to...
|
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...
|
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...
|
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,...
|
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...
|
54
