SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function countMatches (children 1)
     ExpressionList (children 2)
      Function toFixedString (children 1)
       ExpressionList (children 2)
        Literal \'foo bar   \'
        Literal UInt64_12
      Literal \'[a-zA-Z]*\'