SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Literal \'damerauLevenshteinDistance\'
    Identifier s1
    Identifier s2
    Function damerauLevenshteinDistance (children 1)
     ExpressionList (children 2)
      Identifier s1
      Identifier s2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL
