Quickly check whether file name is in column in an SQL Table and move to new folder











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I have a table that in one of the columns exists a list of file names. The names comes from other tables and the files in a folder.



Not all the files are used, may be attached to parcels that no longer are active. My list is of only the active parcels.



After creating the table I want to go through the folder of files and move the files that are being used(exist in the table) to another folder.



Currently I iterate the files in the folder and test whether each file one at a time returns a record or not using an SQL command.



This works, but the consistent checking back to the database is slow.



Here is the code as it sits now:



param( 
[string] $src,
[string] $dest,
[string] $table
)

$sql_instance_name = 'db'
$db_name = 'DB2'
$sql_user = 'user'
$sql_user_pswd = 'password'



Get-ChildItem -Path $src -Recurse -File | ForEach-Object {
$query = "select * from " + $table + " WHERE FILE_NAME Like '" + $_.BaseName + $_.Extension + "'"
#write-output $query


$expcsv = invoke-sqlcmd -Username $sql_user -PASSWORD $sql_user_pswd -Database $db_name -Query $query -serverinstance $sql_instance_name
if($expcsv -ne $null)

{
$nextName = Join-Path -Path $dest ( $_.BaseName + $_.EXTENSION)
Write-Output $nextName
$_ | Move-Item -Destination $nextName
}
}


Is there a way to load the data into memory, and search that instead of going back and forth from the database? I have to assume it would be quicker.










share|improve this question




























    up vote
    0
    down vote

    favorite












    I have a table that in one of the columns exists a list of file names. The names comes from other tables and the files in a folder.



    Not all the files are used, may be attached to parcels that no longer are active. My list is of only the active parcels.



    After creating the table I want to go through the folder of files and move the files that are being used(exist in the table) to another folder.



    Currently I iterate the files in the folder and test whether each file one at a time returns a record or not using an SQL command.



    This works, but the consistent checking back to the database is slow.



    Here is the code as it sits now:



    param( 
    [string] $src,
    [string] $dest,
    [string] $table
    )

    $sql_instance_name = 'db'
    $db_name = 'DB2'
    $sql_user = 'user'
    $sql_user_pswd = 'password'



    Get-ChildItem -Path $src -Recurse -File | ForEach-Object {
    $query = "select * from " + $table + " WHERE FILE_NAME Like '" + $_.BaseName + $_.Extension + "'"
    #write-output $query


    $expcsv = invoke-sqlcmd -Username $sql_user -PASSWORD $sql_user_pswd -Database $db_name -Query $query -serverinstance $sql_instance_name
    if($expcsv -ne $null)

    {
    $nextName = Join-Path -Path $dest ( $_.BaseName + $_.EXTENSION)
    Write-Output $nextName
    $_ | Move-Item -Destination $nextName
    }
    }


    Is there a way to load the data into memory, and search that instead of going back and forth from the database? I have to assume it would be quicker.










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have a table that in one of the columns exists a list of file names. The names comes from other tables and the files in a folder.



      Not all the files are used, may be attached to parcels that no longer are active. My list is of only the active parcels.



      After creating the table I want to go through the folder of files and move the files that are being used(exist in the table) to another folder.



      Currently I iterate the files in the folder and test whether each file one at a time returns a record or not using an SQL command.



      This works, but the consistent checking back to the database is slow.



      Here is the code as it sits now:



      param( 
      [string] $src,
      [string] $dest,
      [string] $table
      )

      $sql_instance_name = 'db'
      $db_name = 'DB2'
      $sql_user = 'user'
      $sql_user_pswd = 'password'



      Get-ChildItem -Path $src -Recurse -File | ForEach-Object {
      $query = "select * from " + $table + " WHERE FILE_NAME Like '" + $_.BaseName + $_.Extension + "'"
      #write-output $query


      $expcsv = invoke-sqlcmd -Username $sql_user -PASSWORD $sql_user_pswd -Database $db_name -Query $query -serverinstance $sql_instance_name
      if($expcsv -ne $null)

      {
      $nextName = Join-Path -Path $dest ( $_.BaseName + $_.EXTENSION)
      Write-Output $nextName
      $_ | Move-Item -Destination $nextName
      }
      }


      Is there a way to load the data into memory, and search that instead of going back and forth from the database? I have to assume it would be quicker.










      share|improve this question















      I have a table that in one of the columns exists a list of file names. The names comes from other tables and the files in a folder.



      Not all the files are used, may be attached to parcels that no longer are active. My list is of only the active parcels.



      After creating the table I want to go through the folder of files and move the files that are being used(exist in the table) to another folder.



      Currently I iterate the files in the folder and test whether each file one at a time returns a record or not using an SQL command.



      This works, but the consistent checking back to the database is slow.



      Here is the code as it sits now:



      param( 
      [string] $src,
      [string] $dest,
      [string] $table
      )

      $sql_instance_name = 'db'
      $db_name = 'DB2'
      $sql_user = 'user'
      $sql_user_pswd = 'password'



      Get-ChildItem -Path $src -Recurse -File | ForEach-Object {
      $query = "select * from " + $table + " WHERE FILE_NAME Like '" + $_.BaseName + $_.Extension + "'"
      #write-output $query


      $expcsv = invoke-sqlcmd -Username $sql_user -PASSWORD $sql_user_pswd -Database $db_name -Query $query -serverinstance $sql_instance_name
      if($expcsv -ne $null)

      {
      $nextName = Join-Path -Path $dest ( $_.BaseName + $_.EXTENSION)
      Write-Output $nextName
      $_ | Move-Item -Destination $nextName
      }
      }


      Is there a way to load the data into memory, and search that instead of going back and forth from the database? I have to assume it would be quicker.







      sql-server powershell






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      edited 53 mins ago









      Jamal

      30.2k11115226




      30.2k11115226










      asked 6 hours ago









      Scott Craner

      20815




      20815



























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