MySQL: @variable vs. variable. What's the difference?
In MySQL, @variable indicates a user-defined variable. You can define your own. SET @a = 'test'; SELECT @a; Outside of stored programs, a variable, without @, is a system variable, …
Defining and using a variable in batch file - Stack Overflow
370 The spaces are significant. You created a variable named 'location ' with a value of ' "bob"'. Note - enclosing single quotes were added to show location of space. If you want quotes in …
SQL Server SELECT INTO @variable? - Stack Overflow
Jan 8, 2015 · INTO .. a TABLE VARIABLE. The best you can do is create it first, then insert into it. Your 2nd snippet has to be DECLARE @TempCustomer TABLE ( CustomerId …
What does the @ symbol before a variable name mean in C#?
Mar 18, 2016 · I understand that the @ symbol can be used before a string literal to change how the compiler parses the string. But what does it mean when a variable name is prefixed with …
JavaScript OR (||) variable assignment explanation - Stack Overflow
Agreed, this is my favorite answer as it specifically addresses JavaScript variable assignment concerns. Additionally, if you choose to use a ternary as one of the subsequent variables to …
How to get text and a variable in a messagebox - Stack Overflow
Dec 25, 2011 · How to get text and a variable in a messagebox Asked 13 years, 6 months ago Modified 1 year, 3 months ago Viewed 202k times
cmd - Is there a command to refresh environment variables from …
Oct 5, 2008 · If I modify or add an environment variable I have to restart the command prompt. Is there a command I could execute that would do this without restarting CMD?
How to add Maven to the Path variable? - Stack Overflow
Jul 15, 2017 · If you are struggling to get the iii) step working, in the system path, just add C:\Program Files\apache-maven-3.x.y\bin (Replacing x and y with your version number) to …
Passing additional variables from command line to make
Nov 11, 2016 · From command line - make can take variable assignments as part of its command line, mingled with targets: make target FOO=bar But then all assignments to FOO variable …
Difference between %variable% and !variable! in batch file
The value of the !_var! variable is evaluated as late as possible while the %_var% variable works just as before. Delayed Expansion will cause variables within a batch file to be expanded at …