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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.
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.
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.
23 maj 2023 · The following syntax is for SQL Server and Azure SQL Database: DECLARE { { @local_variable [AS] data_type [ = value ] } | { @cursor_variable_name CURSOR } } [ ,...n ] | { @table_variable_name [AS] <table_type_definition> } <table_type_definition> ::= TABLE ( { <column_definition> | <table_constraint> | <table_index> } } [ ,...n ] ) <column ...
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 @.
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.
28 cze 2024 · Variable Types in SQL: Local, Global. MS SQL has two types of variables: Local variable; Global variable. However, the user can only create a local variable. Below figure explain two types of variable available in MS SQL server.
