Powershell | How to make an if statement that compares date from SQL Table with Date given in script - sql

Question

Background information: So I am writing a Powershell script to clean up a SQL Server Database and I have a question on how to perform an if statement in this very specific case.
So the script works as follows:
The Script connects to the SQL Server Database
It get's the current date -5 days and converts it to unix Epoch time
It takes that Epoch date and cuts off the decimals
Then adds 3 zero's because the Database requires 13 numbers (Not sure why who ever set the database up decided to do this but it is what it is)
Then comes the if statement <-- my question
Define SQL Query
Run the sql query
The Question: So I want to have an if statement that compares the converted unix epoch date with the epoch date from the SQL Server
Database Table and if the date is less or equal then the entries are deleted.
My code is currently as follows:
#### Variables ####
# Sorry for having to censor the variable inputs, wouldn't wanna leak this sensitive information everywhere.
$UID = 'uid'
$PASS = 'pass'
$SI = 'serverinstance'
$DB = 'database'
$Table = 'table'
$Table_age = 'date_column'
$Age = 5 # Maximum age of an entry
$DateDecimal = ',' # Depends on the PC but this might have to be changed to a .period instead
$EQLcompat = '000' # EQL Database compatibility for the Epoch time
#### Get date and convert to Epoch ####
$Date = Get-Date $((Get-Date).AddDays(-$Age).ToUniversalTime()) -UFormat +%s
#Substring the decimal values
$DateCut = $Date.Substring(0, $Date.IndexOf($DateDecimal))
#Make Epoch date EQL Database compatible
$unixTime = $DateCut + $EQLcompat
#### if statement in Question ####
if ($Table -le $unixTime){
# SQL Query
$SQLquery = "
SELECT TOP (1) *
FROM [$Table]
"}
else{
Write-Host 'Nope, not this way'
}
#### Run SQL Query ####
Invoke-Sqlcmd -serverinstance $SI -Database $DB -username $UID -password $PASS -query $SQLquery
Does anyone have any idea how to do this if statement to make this work? Thank you very much!
EDIT 1:
I've tried if (+ $Table -le $unixTime){ however this gives me the error code;
Cannot convert value "databasename" to type "System.Int32". Error: "Input string was not in a correct format."
At C:\Users\fabstefanm.GEMEENTENET\Documents\Code\SQL Table Cleaner.ps1:35 char:5
+ if (+ $Table -le $unixTime){
+ ~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvalidCastFromStringToInteger
EDIT 2:
Meant SQL Server not MySQL, my bad got the two names crossed.
EDIT 3:
I've changed the if statement to this:
#### if statement ####
if ($DB.output -le $unixTime){
# SQL Query
$SQLquery = "SELECT TOP (1) * FROM [$Table] WHERE [$Table_age] <= [$unixTime]"
Write-Host 'Yes, this way'
}
Now this does feel like I've come a step closer to solving the issue, however te error I now get is Invoke-Sqlcmd : Invalid column name '1659532862000'. So it does seem that I am not yet in the right place, does anyone know how to fix this?

Answer 1

I changed around the if statement slightly and now it all works. Of course it's just a select query and not yet the delete query, but that's not a big change.
This is the new if statement + SQLquery is this:
#### if statement ####
if ($DB.output -le $unixTime){
# SQL Query
$SQLquery = "SELECT TOP (10) [$Table_age] FROM [$DB].[dbo].[$Table] WHERE [$Table_age] >= $unixTime"
Write-Host 'Yes, this way'
}
So if anyone else ever comes across the need to use Powershell to run a task and then an SQL query with an if statement in it then I hope this can be of some assistance.