by: Agoston Bejo |
last post by:
I want to enforce such a constraint on a column that would ensure that the
values be all unique, but this wouldn't apply to NULL values. (I.e. there
may be more than one NULL value in the column.)...
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by: Jeremiah Jacks |
last post by:
I just upgraded to MySQL 4.0.14-standard for RedHat Linux and am using =
the
pre-compiled binaries.
I have a database with INNODB tables.
When I insert a row into one of the child tables, I get...
|
by: wireless |
last post by:
I've written code that dynamically builds an sql query based on
various constraint possibilities.
The problem is the code would have been very complex had I not come up
with a dummy constraint...
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by: Fabre Lambeau |
last post by:
I've got a problem when adding a CONSTRAINT CHECK on a table by calling a
function. It just seems not to work...
Here is the table (simplified to only the relevant fields for this case):
...
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by: yongsing |
last post by:
I have two tables as shown below (only relevant columns shown). The
second table is dependent on the first one.
CREATE TABLE PARENTTABLE (
...
SERIAL CHAR(12) NOT NULL,
ENDDATE TIMESTAMP NOT...
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by: |
last post by:
Hi,
I am getting the following error when I run my Visual Basic
application:
"Cannot add primary key constraint since primary key is
already set for the table"
I am using datasets with...
|
by: D. Dante Lorenso |
last post by:
I'm trying to build a table that will store a history of records
by enumerating the records. I want the newest record to always
be number ZERO, so I created a trigger on my table to handle the...
|
by: Steven Bethard |
last post by:
I'm trying to solve a constraint-satisfaction problem, and I'm having
some troubles framing my problem in such a way that it can be
efficiently solved.
Basically, I want to build groups of two...
|
by: Frank Swarbrick |
last post by:
I have the following three tables
DROP TABLE CALLTRAK.SERVICE_CODES
@
CREATE TABLE CALLTRAK.SERVICE_CODES (
CODE CHAR(1) NOT NULL
, CONSTRAINT SERVICE_CODES_PK
PRIMARY KEY (CODE)
,...
|
by: rorajoey |
last post by:
Violation of UNIQUE KEY constraint 'IX_surveyQuestions'. Cannot insert duplicate key in object 'dbo.surveyQuestions'.
This might seem like a simple matter of trying to insert a row with ID=20 when...
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by: DolphinDB |
last post by:
Tired of spending countless mintues downsampling your data? Look no further!
In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
|
by: ryjfgjl |
last post by:
ExcelToDatabase: batch import excel into database automatically...
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by: jfyes |
last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
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by: ArrayDB |
last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
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by: PapaRatzi |
last post by:
Hello,
I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
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by: CloudSolutions |
last post by:
Introduction:
For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
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by: Shællîpôpï 09 |
last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
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by: Faith0G |
last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 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 former...
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