Posted: 3 days ago Parameters. At least two expressions must be passed to the function. Standards and compatibility. SQL 92 Transact All the Function s returns the specified value if the value in the specified column inside these function is NULL. However, this function is used differently depending on the database management system. This function take two arguments. If the first argument is not NULL, the function returns the first argument. Otherwise, the second argument is returned.
This function is commonly used to replace NULL value with another value. For example, the following list would return 'A'. When the value to be checked is null, it returns an alternative value if it is true.
How to correct this program in case and break statements? Layout: fixed fluid. Web02 2. Strip HTML. Encode HTML. Paste as-is. Code block. Quoted Text. Best guess. Optional Password. Richard Deeming. Richard MacCutchan.
Rauf Rauf Add a comment. Active Oldest Votes. Improve this answer. Mitch Wheat Mitch Wheat k 42 42 gold badges silver badges bronze badges. Sometime you need case isnull column, 99 when 99 then "null" when 1 then Do you know why this is true? Person table. For example, the person may be an employee, vendor representative, or a customer. The function returns the first and last name of a given BusinessEntityID and the contact type for that person.
The statement returns the maximum hourly rate for each job title in the HumanResources. Employee table. The HAVING clause restricts the titles to those that are held by men with a maximum pay rate greater than 40 dollars or women with a maximum pay rate greater than 42 dollars.
When a value does not exist, the text "Not for sale' is displayed. Skip to main content.
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