嗨，我正在尝试更新列，但似乎不起作用。它提取数据并在字符串中进行日期转换，但我下面代码的更新部分不想插入 Powershell 所做的更改。
## connect to db and do stuff
$Connection = new-object system.data.SqlClient.SQLConnection("Data Source= (local);Integrated Security=SSPI;Initial Catalog=TESTDB");
$sqlqry = "select row_id, DestFileName from FL_Input Where DestFileName like '%[0-9] ' + 'Jan%' + ' [0-9]%'"
$Command = new-object system.data.sqlclient.sqlcommand
$Command.CommandText = $sqlqry
$Command.Connection = $Connection
$Connection.Open()
$UpdateCmd = new-object System.Data.SqlClient.SqlCommand
$UpdateCmd.Connection = $Connection
## for each filename, update timestamp - this replaces your $file in $files loop.
$Result = $Command.ExecuteReader()
while ($Result.Read()) {
$destfile = $Result['DestFileName']
$srcfile = $destfile
$row_id = $Result['row_id']
## do all your regex stuff here
$destfile -match '\d{2}\s\w+\s\d{2,4}' | Out-Null <# Test #>
$destfile -match '\d{2}\-\w+\-\d{4}' | Out-Null <# Test #>
$destFile -replace "$(($matches).values)" , "$(get-date "$(($matches).Values)" -Format yyyyMMdd)"
write-host "{0}->{1}" -f $destfile, $srcfile
# when you're finished doing your regex, push the result result back to the db:
$updateqry = "update FL_Input set DestFileName='{0}' WHERE Row_ID = {1} " -f $destfile, $row_id
$UpdateCmd.CommandText = $updateqry
$UpdateCmd.ExecuteNonQuery()
}
## all done
$Connection.Close