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13 mar 2014 · You cannot declare global variables in SQLServer. If you're using Management Studio you can use SQLCMD mode like @Lanorkin pointed out. Otherwise you can use CONTEXT_INFO to store a single variable that is visible during a session and connection, but it'll disappear after that.
8 lip 2024 · Although in earlier versions of SQL Server, the @@ functions are referred to as global variables, @@ functions aren't variables, and they don't have the same behaviors as variables. The @@ functions are system functions, and their syntax usage follows the rules for functions. You can't use variables in a view.
19 sie 2020 · Global variables are pre-defined system variables. It starts with @@. It provides information about the present user environment for SQL Server. SQL Server provides multiple global variables, which are very effective to use in Transact-SQL.
The first thing to know about global variables in SQL is that they aren't variables (for these, read my separate tutorial). Instead, they are useful bits of infomation made available by SQL Server, which you can use. All global variables start with @@; all normal variables start with @.
5 lis 2012 · Global variables return various pieces of information about the current user environment for SQL Server. Global Variable are automatically updated and interact with the system. So let's have a look at a practical example of how to use @@functions in SQL Server 2012.
19 sie 2009 · SQL Server provides a massive number of global variables, which are very effective to use in our regular Transact-SQL. Global variables represent a special type of variable. The server always maintain the values of these variables.
31 maj 2016 · I am interested in having a list of sql server 2012 global variables (the ones with name @@<var>), I am checking the online manuals and I don't find it, maybe I am missing just the part...
