SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arrayLevenshteinDistance (children 1)
     ExpressionList (children 4)
      Identifier lhs
      Identifier rhs
      Identifier lhs_weights
      Identifier rhs_weights
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier weighted_levenshtein
