SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Literal \'clickhouse\' (alias s1)
    Literal \'mouse\' (alias s2)
    Function damerauLevenshteinDistance (children 1)
     ExpressionList (children 2)
      Identifier s1
      Identifier s2
