Regex regex = new Regex(@"G0(\d)");
TextBox1.Text = regex.Replace(textBox1.Text, "G$1");
Regex regex = new Regex(@"\.");
TextBox1.Text = regex.Replace(textBox1.Text, ",");
Regex regex = new Regex(@"^([XY])", RegexOptions.Multiline);
TextBox1.Text = regex.Replace(textBox1.Text, "G5 $1");
Regex regex = new Regex(@"([XYZIJ])");
TextBox1.Text = regex.Replace(textBox1.Text, " $1");
SELECT `id`, MAX(`members`) AS `max_members`
FROM `table`
WHERE `members` > 400
GROUP BY `id`SELECT `id`, MAX(`members`) AS `max_members`
FROM `table`
GROUP BY `id`
HAVING `max_members` > 400