SQL 기본값이 다를경우

	if (dataGridView2.Rows[0].Cells[3].Value.ToString().Trim() != dataGridView2.Rows[0].Cells[10].Value.ToString().Trim())
			{
	string alterTable = "ALTER TABLE " + tbl + " ALTER COLUMN `" + dataGridView2.Rows[0].Cells[0].Value.ToString() + "` SET " + def;
	Create(alterTable);
			}