class BeamSqlTrimExpression extends BeamSqlExpression {

  static String leadingTrim(String containingStr, String targetStr) {
    int idx = 0;
    while (containingStr.startsWith(targetStr, idx)) {
      idx += targetStr.length();
    }

    return containingStr.substring(idx);
  }

  public  BeamSqlTrimExpression(List<BeamSqlExpression> operands);

}