Functions/GenXdev.Data.SQLite/Get-SQLiteViewColumnData.ps1
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Part of PowerShell module : GenXdev.Data.SQLite Original cmdlet filename : Get-SQLiteViewColumnData.ps1 Original author : René Vaessen / GenXdev Version : 1.270.2025 ################################################################################ MIT License Copyright 2021-2025 GenXdev Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ################################################################################> ############################################################################### <# .SYNOPSIS Retrieves column data from a SQLite view with optional record limiting. .DESCRIPTION Executes a SELECT query against a specified SQLite view to retrieve data from a single column. Supports connecting via either a connection string or database file path. Allows limiting the number of returned records or retrieving all records. .PARAMETER ConnectionString The SQLite database connection string. This parameter is mutually exclusive with DatabaseFilePath. .PARAMETER DatabaseFilePath The full path to the SQLite database file. This parameter is mutually exclusive with ConnectionString. .PARAMETER ViewName The name of the SQLite view to query data from. .PARAMETER ColumnName The name of the column within the view to retrieve data from. .PARAMETER Count The maximum number of records to return. Use -1 to return all records. Defaults to 100 if not specified. .EXAMPLE Get-SQLiteViewColumnData -DatabaseFilePath "C:\MyDB.sqlite" ` -ViewName "CustomersView" ` -ColumnName "Email" ` -Count 50 .EXAMPLE Get-SQLiteViewColumnData "C:\MyDB.sqlite" "CustomersView" "Email" #> function Get-SQLiteViewColumnData { [CmdletBinding(DefaultParameterSetName = 'Default')] param ( ############################################################################### [Parameter( Position = 0, Mandatory = $true, ParameterSetName = 'ConnectionString', HelpMessage = 'The connection string to the SQLite database.' )] [string]$ConnectionString, ############################################################################### [Parameter( Position = 0, Mandatory = $true, ParameterSetName = 'DatabaseFilePath', HelpMessage = 'The path to the SQLite database file.' )] [ValidateNotNullOrEmpty()] [Alias('dbpath', 'indexpath')] [string]$DatabaseFilePath, ############################################################################### [Parameter( Position = 1, Mandatory = $true, HelpMessage = 'The name of the view.' )] [string]$ViewName, ############################################################################### [Parameter( Position = 2, Mandatory = $true, HelpMessage = 'The name of the column.' )] [string]$ColumnName, ############################################################################### [Parameter( Position = 3, Mandatory = $false, HelpMessage = 'The number of records to return. Default is 100. -1 for all.' )] [int]$Count = 100 ) begin { # log the start of the operation Microsoft.PowerShell.Utility\Write-Verbose "Starting Get-SQLiteViewColumnData for view '$ViewName'" } process { # determine if we need to limit the results or get all records if ($Count -eq -1) { # construct query to get all records $PSBoundParameters['Queries'] = "SELECT $ColumnName FROM $ViewName" Microsoft.PowerShell.Utility\Write-Verbose "Querying all records from view '$ViewName'" } else { # construct query with LIMIT clause $PSBoundParameters['Queries'] = "SELECT $ColumnName FROM $ViewName LIMIT $Count" Microsoft.PowerShell.Utility\Write-Verbose "Querying $Count records from view '$ViewName'" } # execute the query using the existing Invoke-SQLiteQuery cmdlet GenXdev.Data\Invoke-SQLiteQuery @PSBoundParameters } end { # log completion of the operation Microsoft.PowerShell.Utility\Write-Verbose "Completed Get-SQLiteViewColumnData for view '$ViewName'" } } |