Copy-DbaDbViewData.ps1

function Copy-DbaDbViewData {
    <#
    .SYNOPSIS
        Copies data from a SQL Server view to a table.

    .DESCRIPTION
        Copies data from a SQL Server view to a table using SQL Bulk Copy.
        With this function, a streaming copy will be done in the most speedy and least resource-intensive way.

    .PARAMETER SqlInstance
        Source SQL Server.You must have sysadmin access and server version must be SQL Server version 2000 or greater.

    .PARAMETER SqlCredential
        Login to the source instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).

        Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.

        For MFA support, please use Connect-DbaInstance.

    .PARAMETER Destination
        Destination Sql Server. You must have sysadmin access and server version must be SQL Server version 2000 or greater.

    .PARAMETER DestinationSqlCredential
        Login to the destination instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).

        Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.

        For MFA support, please use Connect-DbaInstance.

    .PARAMETER Database
        The database to copy the table from.

    .PARAMETER DestinationDatabase
        The database to copy the table to. If not specified, it is assumed to be the same of Database

    .PARAMETER View
        Specify a view to use as a source. You can specify a 2 or 3 part name (see examples).

        If the object has special characters please wrap them in square brackets.

    .PARAMETER DestinationTable
        The table you want to use as destination. If not specified, it is assumed to be the same of View

    .PARAMETER Query
        Define a query to use as a source. Note: 3 or 4 part object names may be used (see examples)
        Ensure to select all required columns.
        Calculated Columns or columns with default values may be excluded.

        Note: The workflow in the command requires that a valid -Table or -View parameter value be specified.

    .PARAMETER AutoCreateTable
        Creates the destination table if it does not already exist, based off of the "Export..." script of the source table.

    .PARAMETER BatchSize
        The BatchSize for the import defaults to 50000.

    .PARAMETER NotifyAfter
        Sets the option to show the notification after so many rows of import. The default is 5000 rows.

    .PARAMETER NoTableLock
        If this switch is enabled, a table lock (TABLOCK) will not be placed on the destination table. By default, this operation will lock the destination table while running.

    .PARAMETER CheckConstraints
        If this switch is enabled, the SqlBulkCopy option to process check constraints will be enabled.

        Per Microsoft "Check constraints while data is being inserted. By default, constraints are not checked."

    .PARAMETER FireTriggers
        If this switch is enabled, the SqlBulkCopy option to fire insert triggers will be enabled.

        Per Microsoft "When specified, cause the server to fire the insert triggers for the rows being inserted into the Database."

    .PARAMETER KeepIdentity
        If this switch is enabled, the SqlBulkCopy option to preserve source identity values will be enabled.

        Per Microsoft "Preserve source identity values. When not specified, identity values are assigned by the destination."

    .PARAMETER KeepNulls
        If this switch is enabled, the SqlBulkCopy option to preserve NULL values will be enabled.

        Per Microsoft "Preserve null values in the destination table regardless of the settings for default values. When not specified, null values are replaced by default values where applicable."

    .PARAMETER Truncate
        If this switch is enabled, the destination table will be truncated after prompting for confirmation.

    .PARAMETER BulkCopyTimeOut
        Value in seconds for the BulkCopy operations timeout. The default is 5000 seconds.

    .PARAMETER InputObject
        Enables piping of View objects from Get-DbaDbView

    .PARAMETER WhatIf
        If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.

    .PARAMETER Confirm
        If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.

    .PARAMETER EnableException
        By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
        This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
        Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.

    .NOTES
        Tags: Migration
        Author: Stephen Swan (@jaxnoth)

        Website: https://dbatools.io
        Copyright: (c) 2018 by dbatools, licensed under MIT
        License: MIT https://opensource.org/licenses/MIT

    .LINK
        https://dbatools.io/Copy-DbaDbViewData

    .EXAMPLE
        PS C:\> Copy-DbaDbViewData -SqlInstance sql1 -Destination sql2 -Database dbatools_from -View dbo.test_view

        Copies all the data from view dbo.test_view (2-part name) in database dbatools_from on sql1 to view test_view in database dbatools_from on sql2.

    .EXAMPLE
        PS C:\> Copy-DbaDbViewData -SqlInstance sql1 -Destination sql2 -Database dbatools_from -DestinationDatabase dbatools_dest -DestinationTable [Schema].[test table]

        Copies all the data from view [Schema].[test view] (2-part name) in database dbatools_from on sql1 to table [Schema].[test table] in database dbatools_dest on sql2

    .EXAMPLE
        PS C:\> Get-DbaDbView -SqlInstance sql1 -Database tempdb -View vw1, vw2 | Copy-DbaDbViewData -DestinationTable tb3

        Copies all data from Views vw1 and vw2 in tempdb on sql1 to tb3 in tempdb on sql1

    .EXAMPLE
        PS C:\> Get-DbaDbView -SqlInstance sql1 -Database tempdb -View vw1, vw2 | Copy-DbaDbViewData -Destination sql2

        Copies data from tbl1 in tempdb on sql1 to tbl1 in tempdb on sql2
        then
        Copies data from tbl2 in tempdb on sql1 to tbl2 in tempdb on sql2

    .EXAMPLE
        PS C:\> Copy-DbaDbViewData -SqlInstance sql1 -Destination sql2 -Database dbatools_from -View test_view -KeepIdentity -Truncate

        Copies all the data in view test_view from sql1 to sql2, using the database dbatools_from, keeping identity columns and truncating the destination

    .EXAMPLE
        PS C:\> $params = @{
        >> SqlInstance = 'sql1'
        >> Destination = 'sql2'
        >> Database = 'dbatools_from'
        >> DestinationDatabase = 'dbatools_dest'
        >> View = '[Schema].[View]'
        >> DestinationTable = '[dbo].[View.Copy]'
        >> KeepIdentity = $true
        >> KeepNulls = $true
        >> Truncate = $true
        >> BatchSize = 10000
        >> }
        >>
        PS C:\> Copy-DbaDbViewData @params

        Copies all the data from view [Schema].[View] in database dbatools_from on sql1 to table [dbo].[Table.Copy] in database dbatools_dest on sql2
        Keeps identity columns and Nulls, truncates the destination and processes in BatchSize of 10000.

    .EXAMPLE
        PS C:\> $params = @{
        >> SqlInstance = 'server1'
        >> Destination = 'server1'
        >> Database = 'AdventureWorks2017'
        >> DestinationDatabase = 'AdventureWorks2017'
        >> View = '[AdventureWorks2017].[Person].[EmailPromotion]'
        >> BatchSize = 10000
        >> Query = "SELECT * FROM [OtherDb].[Person].[Person] where EmailPromotion = 1"
        >> }
        >>
        PS C:\> Copy-DbaDbViewData @params

        Copies data returned from the query on server1 into the AdventureWorks2017 on server1.
        This query uses a 3-part name to reference the object in the query value, it will try to find the view named "Person" in the schema "Person" and database "OtherDb".
        Copy is processed in BatchSize of 10000 rows. See the -Query param documentation for more details.
    #>
    [CmdletBinding(DefaultParameterSetName = "Default", SupportsShouldProcess)]
    param (
        [DbaInstanceParameter]$SqlInstance,
        [PSCredential]$SqlCredential,
        [DbaInstanceParameter[]]$Destination,
        [PSCredential]$DestinationSqlCredential,
        [string]$Database,
        [string]$DestinationDatabase,
        [string[]]$View,
        [string]$Query,
        [switch]$AutoCreateTable,
        [int]$BatchSize = 50000,
        [int]$NotifyAfter = 5000,
        [string]$DestinationTable,
        [switch]$NoTableLock,
        [switch]$CheckConstraints,
        [switch]$FireTriggers,
        [switch]$KeepIdentity,
        [switch]$KeepNulls,
        [switch]$Truncate,
        [int]$BulkCopyTimeOut = 5000,
        [Parameter(ValueFromPipeline)]
        [Microsoft.SqlServer.Management.Smo.TableViewBase[]]$InputObject,
        [switch]$EnableException
    )

    process {
        Copy-DbaDbTableData @PSBoundParameters
    }
}