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 double …

$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 tools to explore …

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 range of Unicode …

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 exists in the …

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 variables is …

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 PowerShell on any …

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 Expressions.

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. For …

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.