Functions/Columns/New-DateColumn.ps1
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function New-DateColumn { <# .SYNOPSIS Creates a column object representing an Date datatype. .DESCRIPTION Use this function in the `Column` script block for `Add-Table`: Add-Table 'Members' { Date 'Birthday' } ## ALIASES * Date .EXAMPLE Add-Table 'Members' { New-DateColumn 'Birthday' -NotNull } Demonstrates how to create a required `date` column. .EXAMPLE Add-Table 'Members' { Date 'Birthday' -Sparse } Demonstrate show to create a nullable, sparse `date` column when adding a new table. .EXAMPLE Add-Table 'Members' { Date 'Birthday' -NotNull -Default 'get`date`()' } Demonstrates how to create a `date` column with a default value, in this case the current `date`. (You alwyas use UTC `date`s, right?) Probably not a great example, setting someone's birthday to the current `date`. Reasons are left as an exercise for the reader. .EXAMPLE Add-Table 'Members' { Date 'Birthday' -Description 'The members birthday.' } Demonstrates how to create an optional `date` column with a description. #> [CmdletBinding(DefaultParameterSetName='Nullable')] param( [Parameter(Mandatory=$true,Position=0)] [string] # The column's name. $Name, [Parameter(Mandatory=$true,ParameterSetName='NotNull')] [Switch] # Don't allow `NULL` values in this column. $NotNull, [Parameter(ParameterSetName='Nullable')] [Switch] # Store nulls as Sparse. $Sparse, [Parameter()] [string] # A SQL Server expression for the column's default value $Default, [Parameter()] [string] # A description of the column. $Description ) switch ($PSCmdlet.ParameterSetName) { 'Nullable' { $nullable = 'Null' if( $Sparse ) { $nullable = 'Sparse' } [Rivet.Column]::Date($Name, $nullable, $Default, $Description) } 'NotNull' { [Rivet.Column]::Date($Name,'NotNull', $Default, $Description) } } } Set-Alias -Name 'Date' -Value 'New-DateColumn' |