How to remove the special character in SQL file - sql

Question

I am facing very big issue, please help me. I am having "FileName.sql" file , in that file when I try to deploy to server using PowerShell script (that's our company deployment tool), it always complains that there is a special character inside the file, hence deployment fails.
But it never says on which line the special character is, could you please help me, how to identify the special character in SQL file?
When I execute this FileName.sql file manually in SQL Server Management Studio, it will execute without error, but through PowerShell script, I am not able to deploy, so please help me.
How to identify the special character inside my SQL file?
select * from TableName

Answer 1

select REPLACE(REPLACE(LTRIM(RTRIM([ColumnName])), CHAR(1), ''), CHAR(9), '')) [NewColumnName] from TableName
I have used REPLACE() function to remove the special charachers:-
LTRIM() & RTRIM() - Tab character or the Space bar character
CHAR(1) & CHAR(9) - ASCII Control Characters
If you are going to use this on multiple columns. You can create a Function. Let me know if you need help with creating a Function. Thank you

Answer 2

open file with notepad++. find the char and save/encode as ascii/utf8. possibly someone edited the file in Word and you have special/fancy quotes or hyphen.
No clue if this helps, but this may...
Find-FancyCharacters.ps1
[CmdletBinding()]
param (
[string[]]
$Files
)
$badCharacters = #"
‘
’
–
"#
$badCharactersList = $badCharacters -split "`r`n"
if (-not $Files)
{
$Files = #('D:\test\badchars.txt')
}
foreach ($file in $Files)
{
Write-Progress -Activity "Checking file: $file..."
$contents = Get-Content $file -Encoding UTF8
$lineNumber = 1
foreach ($line in $contents)
{
foreach ($invalidChar in $badCharactersList)
{
if ($line -match $invalidChar)
{
Write-Output "Invalid Character found: f=$file, l=$lineNumber, c=$invalidChar"
break
}
}
$lineNumber++
}
}