May 23, 2025 · You can use most characters as variable values, including white space. If you use the special characters <, >, |, &, or ^, you must precede them with the escape character ^ or …

$PSItem was added to PowerShell in an attempt to provide a clearer meaning to the variable name. However, in practice, the dollar sign underscore form $_ is most commonly used.

3 days ago · You don't need to hover or step through lines to see parameter and loop variable values. For complex variables or objects, you can still use DataTips, Visualizers, and other …

Character data types that are either fixed-size, char, or variable-size, varchar. Starting with SQL Server 2019 (15.x), when a UTF-8 enabled collation is used, these data types store the full …

Sep 6, 2023 · If you specify values for <variable> and <string>, the specified <variable> value is added to the environment and <string> is associated with that variable. If the variable already …

Working with variables To create a new variable, use an assignment statement to assign a value to the variable. You don't have to declare the variable before using it. The default value of all …

Aug 27, 2025 · Any environment variable you add or change in your PowerShell profile is available in any session that loads your profile. This method works for any version of …

Nov 18, 2025 · The value can be a constant or an expression, but it must either match the variable declaration type or be implicitly convertible to that type. For more information, see …

Jan 9, 2026 · Variables that are defined as expressions shouldn't depend on another variable with expression in value since it isn't guaranteed that both expressions will be evaluated properly. …

The New-Variable cmdlet creates a new variable in PowerShell. You can assign a value to the variable while creating it or assign or change the value after it is created.