Functions/GenXdev.Data.SQLite/Get-SQLiteTableSchema.ps1
|
<##############################################################################
Part of PowerShell module : GenXdev.Data.SQLite Original cmdlet filename : Get-SQLiteTableSchema.ps1 Original author : René Vaessen / GenXdev Version : 1.264.2025 ################################################################################ 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 the schema information for a specified SQLite table. .DESCRIPTION This function queries the SQLite database to get detailed schema information for a specified table. It uses the SQLite PRAGMA table_info command to return column definitions including names, types, nullable status, and default values. .PARAMETER ConnectionString Specifies the SQLite connection string in the format: "Data Source=path_to_database_file" .PARAMETER DatabaseFilePath Specifies the direct file path to the SQLite database file. This is converted internally to a connection string. .PARAMETER TableName Specifies the name of the table for which to retrieve schema information. .EXAMPLE Get-SQLiteTableSchema -DatabaseFilePath "C:\Databases\mydb.sqlite" ` -TableName "Users" .EXAMPLE Get-SQLiteTableSchema -ConnectionString "Data Source=C:\Databases\mydb.sqlite" ` -TableName "Products" #> function Get-SQLiteTableSchema { [CmdletBinding(DefaultParameterSetName = 'Default')] param ( ########################################################################### [Parameter( Position = 0, Mandatory = $true, ParameterSetName = 'ConnectionString', HelpMessage = 'The connection string to the SQLite database' )] [ValidateNotNullOrEmpty()] [string]$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 = $true, HelpMessage = 'The name of the table' )] [ValidateNotNullOrEmpty()] [string]$TableName ) begin { # log the start of schema retrieval operation Microsoft.PowerShell.Utility\Write-Verbose "Preparing to retrieve schema for table '$TableName'" } process { # construct the PRAGMA query to get detailed table column information $PSBoundParameters['Queries'] = "PRAGMA table_info($TableName)" # log the execution of the schema query Microsoft.PowerShell.Utility\Write-Verbose 'Executing schema query against SQLite database' # execute the query and return results using existing Invoke-SQLiteQuery GenXdev.Data\Invoke-SQLiteQuery @PSBoundParameters } end { } } |