ニュース

Using default values on database columns helps to insulate database design issues from application code. Find out how to change a column's default value at a later date using a single command.
Generally speaking, developers hate nulls. While an integral part of relational database theory (where they represent an unknown value), eventually nulls get passed to some variable that won’t accept ...
Using SQL Server 2000.In a table, I want to default a column 'BillingName' to another column's value in that same table, which is named 'Name'.Using Enterprise Manager, I can normally only set ...
When loading from sql server, bit fields are converted to boolean values. But, it errors out if there are default values set for the bit fields. As an example, the following table has several defau ...
Changing a column to put default value Now again let's take a situation in which you created an employee table, along with it, you created a column subscription but forgot to give its default value.