by: adammitchell |
last post by:
How can you indicate that a FOREIGN KEY constraint references two
columns in two different tables?
"SQL Server Books Online" show an example of how to reference two
columns in the SAME table:...
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by: Arpan |
last post by:
How do I find out how many columns exist in a SQL Server DB table
before displaying the records of that table?
Also how do I get all the column names as an array so that I can
seperate each...
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by: alederer |
last post by:
Hallo!
I have a table tstest(ts char(13) for bit data constraint a unique).
This column is filled in a trigger with generate_unique().
In a application (CLI), I have the values of this...
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by: Greg Linwood |
last post by:
I'm using a Data Grid and want to apply wider spacing between columns than
rows. As such, cellspacing / padding aren't any use to me.
I used to do this in html tables by simply adding columns...
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by: zaphod |
last post by:
I need to select unique combinations of 4 columns from one table and insert
them into a new table but I can't think of any way of finding unique
combinations of more than 1 column since SELECT...
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by: Jeff |
last post by:
I am stuck on trying to generate two columns headers for a datagrid on
form load. I can use a datatable as the datasource and get the results
I want, but I want to set different column widths and...
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by: Paul Hunter |
last post by:
I am new to databases and thus to Access. I have a situation where I am
trying to figure out how to key some tables I am working with. Consider that
I have a database of my own records which are...
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by: James |
last post by:
To alter 1 column to a unique key,
ALTER TABLE user MODIFY COLUMN id INT NOT NULL UNIQUE;
But how to set combination of 2 columns as a unique key?
Individual keys are not unique, but...
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by: Sham |
last post by:
I am trying to perform the following query on a table that has been
indexed using Full Text Search.
The table contains multiple columns than have been indexed. (Below,
all xml columns are...
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by: raghavv |
last post by:
Hi,
How do you implement unique constraint on 2 columns.i.e consider i have 3 column id,name and active.If the there is a row in a table with 1,apple,true than it should not allow the entry of...
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by: taylorcarr |
last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
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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: 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 $name$ ($parameters$) {
}
...
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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: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
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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...
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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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