September 2010
Intermediate to advanced
1704 pages
111h 8m
English
book
Microsoft® SQL Server 2008 R2 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2008 R2 Unleashed
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Compound Assignment Operators
Another new feature that streamlines and improves the efficiency of your T-SQL code is compound operators. This is a concept that has been around in many other programming languages for a long time, but has now finally found its way into T-SQL. Compound operators are used when you want to apply an arithmetic operation on a variable and assign the value back into the variable.
For example, the += operator adds the specified value to the variable and then assigns the new value back into the variable. For example,
SET @ctr += 1
is functionally the same as
SET @ctr = @ctr + 1
The compound operators are a quicker to type, and they offer a cleaner piece of finished code. Following is the complete list of compound operators ...
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