Reading txt content into variable SQL - sql

Question

I have a very simple question. My purpose here to retrieve login names from a txt file into a variable into SQL and query the SQL table while predicating against that same variable.
So for example:
the txt file would have:
forde
blain
martin
Alex
so the idea to feed each name to a variable and output the designated computer name.
Declare #loginName varchar (25)
--open the file
--while the end of the file has not reached, read each line and place the name into #loginName variable
select *
from computerinfo
where loginname = #loginname
I don't necessarily need to bulk import to a temp table at this point.
Thanks.

Answer 1

i had to do this some weeks ago and the simple way i found was Powershell.
I had no SSIS else it's the best of course.
# You may want to adjust these
function Invoke-Sqlcmd2
{
[CmdletBinding()]
param(
[Parameter(Position=0, Mandatory=$true)] [string]$ServerInstance,
[Parameter(Position=1, Mandatory=$false)] [string]$Database,
[Parameter(Position=2, Mandatory=$false)] [string]$Query,
[Parameter(Position=3, Mandatory=$false)] [string]$Username,
[Parameter(Position=4, Mandatory=$false)] [string]$Password,
[Parameter(Position=5, Mandatory=$false)] [Int32]$QueryTimeout=600,
[Parameter(Position=6, Mandatory=$false)] [Int32]$ConnectionTimeout=15,
[Parameter(Position=7, Mandatory=$false)] [ValidateScript({test-path $_})] [string]$InputFile,
[Parameter(Position=8, Mandatory=$false)] [ValidateSet("DataSet", "DataTable", "DataRow")] [string]$As="DataRow"
)
if ($InputFile)
{
$filePath = $(resolve-path $InputFile).path
$Query = [System.IO.File]::ReadAllText("$filePath")
}
$conn=new-object System.Data.SqlClient.SQLConnection
if ($Username)
{ $ConnectionString = "Server={0};Database={1};User ID={2};Password={3};Trusted_Connection=False;Connect Timeout={4}" -f $ServerInstance,$Database,$Username,$Password,$ConnectionTimeout }
else
{ $ConnectionString = "Server={0};Database={1};Integrated Security=True;Connect Timeout={2}" -f $ServerInstance,$Database,$ConnectionTimeout }
$conn.ConnectionString=$ConnectionString
#Following EventHandler is used for PRINT and RAISERROR T-SQL statements. Executed when -Verbose parameter specified by caller
if ($PSBoundParameters.Verbose)
{
$conn.FireInfoMessageEventOnUserErrors=$true
$handler = [System.Data.SqlClient.SqlInfoMessageEventHandler] {Write-Verbose "$($_)"}
$conn.add_InfoMessage($handler)
}
$conn.Open()
$cmd=new-object system.Data.SqlClient.SqlCommand($Query,$conn)
$cmd.CommandTimeout=$QueryTimeout
$ds=New-Object system.Data.DataSet
$da=New-Object system.Data.SqlClient.SqlDataAdapter($cmd)
[void]$da.fill($ds)
$conn.Close()
switch ($As)
{
'DataSet' { Write-Output ($ds) }
'DataTable' { Write-Output ($ds.Tables) }
'DataRow' { Write-Output ($ds.Tables[0]) }
}
} #Invoke-Sqlcmd2
$files = #(get-childitem "filelocationformultiplefile" -include *.txt -exclude *.bak -recurse | where-object {($_.LastWriteTime -le (Get-Date).AddDays(-0))-and ($_.psIsContainer -eq $false)})
if ($files -ne $NULL)
{
for ($idx = 0; $idx -lt $files.Length; $idx++)
{
$file = $files[$idx]
$Query = #"
Bulk INSERT db.dbo.tbl from '$file' with (FirstRow = 1, FieldTerminator ='";', RowTerminator = '\n')
"#
Invoke-sqlcmd2 -ServerInstance "servername" -Database "db" -Query $Query
}
}
And i'm not crazy, except the 10 ending lines everything else is coming from a microsoft official blog.
You don't need everything, powershell is present on every computer, it requires to save this in a file with extension ps1 and configure the 4 variables $fileout2 -> $tablename