Getting error when executing mysql command in powershell.

Question

When I run this it gives me an error and I'm not sure if I'm doing it right. Can someone look at my code please and thank you.
It has a problem with the commandtext and is giving me this error:
Exception calling "ExecuteNonQuery" with "0" argument(s): "You have an error in your SQL
syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IF @@ROWCOUNT=0 INSERT INTO signups (email,date,offer) VALUES ('morenonancy50@ya' at line 1" 
If i take this code out of the commandtext it works, but it doesn't update the tables, it just ads new ones.
UPDATE signups set offer='$($fileContents[$line.ReadCount+3])' WHERE email='$line' IF @@ROWCOUNT=0
$user = 'root'
$pass = ''
$database = 'table01'
$MySQLHost = 'localhost'
$dbconnect = New-Object MySql.Data.MySqlClient.MySqlConnection
$dbconnect.ConnectionString = $connStr = "server=" + $MySQLHost + ";port=3306;uid=" + $user + ";pwd=" + $pass + ";database="+$database+";Pooling=FALSE"
$dbconnect.Open()
$datefin = get-date $($fileContents[$line.ReadCount+0]) -format 'yyyy-MM-dd'
$sql = New-Object MySql.Data.MySqlClient.MySqlCommand
$sql.Connection = $dbconnect
$sql.CommandText = "UPDATE signups set offer='$($fileContents[$line.ReadCount+3])' WHERE email='$line' IF @@ROWCOUNT=0 INSERT INTO signups (email,date,offer) VALUES ('"+$line+"','"+$datefin+"','"+$($fileContents[$line.ReadCount+3])+"');"
$sql.ExecuteNonQuery()
$dbconnect.Close()

Answer 1

Hi Joey,
Based on my research, you have mutiple statements in sql cmd: change the "offer" value based on "email" and add a new row to the sql table.
To work with mutiple SQL statements, you can try to use the cmdlet
"invoke-sqlcmd" instead, and save the sql command text below as .sql file, and check if there is any error:
UPDATE signups set offer='$($fileContents[$line.ReadCount+3])' WHERE email='$line'
IF @@ROWCOUNT=0 INSERT INTO signups (email,date,offer) VALUES ('"+$line+"','"+$datefin+"','"+$($fileContents[$line.ReadCount+3])+"')
Windows Powershell script running multiple SQL statements
Best Regards,
Anna