default value problem in postgresql 7.4.5-2

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by: Dev | last post by:

Hello all, I am working on setting up a table that will append a sequence to the end of the value inserted. Example; INSERT INTO test (test) VALUES ('abcd'); And have the data in the database be; abcd0001 Now I do have things setup else where were the default value for the field

PostgreSQL Database

4282

default value

by: akl | last post by:

How can I create such a default value that it depends on the value in other field (drop down)? So that the default value would be updated every time I change the value of drop-down field.

Microsoft Access / VBA

13913

How to setup default value "0000-00-00" for "date" type under PostgreSQL?

by: Emi Lu | last post by:

Hello all, I have a question about "date" & "timestamp" types in PostgreSQL. I want to setup the default value '0000-00-00' and "0000-00-00 00:00:00" for them. However, it seems that PostgreSQL does not support it. Could someone helps me please? The example table: T1 (col1 varchar(7) not null,

PostgreSQL Database

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Default value if query returns 0 rows?

by: Lars Kellogg-Stedman | last post by:

Hello, I have a simple two-column table mapping names to ids. I'd like to write a select statement that will return a default value if a given name isn't found in the table. That is, I want something equivalent to the following pseudocode: if exists (select 1 from map where name = 'foo') then select id from map where name = 'foo' else

PostgreSQL Database

13664

Allow NULL or Define DEFAULT Value

by: binder | last post by:

I am designing a new table with a few columns that may or may not have a value on each row that is inserted. What issues determine whether to allow a NULL value to be inserted for that column or define a default value to be used? I want to think through the repercussions of this decision before I get into production.

Microsoft SQL Server

2518

Setting a Default Value

by: Brad Baker | last post by:

I have an asp.net/csharp application that requires a particular variable to work properly. This variable is usually passed via a query string in the URL when the application is first run but under certain circumstances the query string may not contain the variable. So I need some way of establishing a default value if one isn't set. Is there some way I can set a query string on page_load OR is there some way I can use a global variable...

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Default value of basic variable type

by: Macneed | last post by:

i am a newbie, i remember i read a book talking about when u declare a array variable using float ABC = new float; the whole array element in ABC ( ABC to ABC ) will automatic initialize to 0 and all type of numeric variable is initialize to 0, bool type is false, is it true?

C# / C Sharp

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default value in __init__

by: kenneth | last post by:

Dear all, I have encountered this weird problem. I have a class definition with an __init__ argument 'd' which defaults to {}. This argument is put in the 'self.d' attribute at initialization I create two independent instances of this class; the code is as follows.

Python

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ternary operator or if() statement for default value?

by: lawpoop | last post by:

I'm trying to write some simple code, but I might be simplifying it too much. I have a function that either returns a string that I want, or FALSE. In the code that I'm working on, I would like to default to another string if the function returns false. Here's the long way to do it: $string = myFunction(2);

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Changing the language in Windows 10

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Problem With Comparison Operator <=> in G++

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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...

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The easy way to turn off automatic updates for Windows 10/11

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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,...

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Access Europe - Using VBA to create a class based on a table - Wed 1 May

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...

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transfer the data from one system to another through ip address

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How to add payments to a PHP MySQL app.

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How can i add a mobile payment intergratation into php mysql website.

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Comprehensive Guide to Website Development in Toronto: Expert Insights from BSMN Consultancy

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