Ms SQL server 2005 datacasting
What's the difference between a float, decimal, int casting?
If I have a value at '-2.5'
And I pull in from a table via nvarchar, how can I recast to do mathematical calculations on it.
If I have a value at '-2.5'
And I pull in from a table via nvarchar, how can I recast to do mathematical calculations on it.
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That's backwards, my friend.
Int's are exact, but do not carry decimal points.
Like int's, decimal's are also exact. But, they can be more precise to the number of decimal points given in the declaration. Decimals are excellent for accounting and financial data where decimals are needed and accuracy is critical.
Float's are approximations, meaning, not all numbers can be represented exactly. They can have high precision (lots of decimal places) using less space than decimals--thus you trade accuracy for space. Float's are useful for very large or small numbers where exactness is not critical.