docs: public static String toSingleColumnSql(String sql) {
  		String tempSql = sql.trim();
  		String regex = "(?i)^select(.*?)from";
  		Matcher m = Pattern.compile(regex).matcher(tempSql);
  		String columnAlias = SqlTemplate.SINGLE_COLUMN_ALIAS;
  		if (m.find()) {
  			columnAlias = m.group(1).trim().replaceAll("\\(\\s+", "(").replaceAll("\\s+\\)", ")").split("\\s+")[0]+ " AS " + columnAlias;
  		}
  		return tempSql.replaceFirst(regex, "select " + columnAlias + " from ");
  	}