SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function and (children 1)
     ExpressionList (children 3)
      Function greaterOrEquals (children 1)
       ExpressionList (children 2)
        Function filesystemCapacity (children 1)
         ExpressionList (children 1)
          Literal \'default\'
        Function filesystemAvailable (children 1)
         ExpressionList (children 1)
          Literal \'default\'
      Function greaterOrEquals (children 1)
       ExpressionList (children 2)
        Function filesystemAvailable (children 1)
         ExpressionList (children 1)
          Literal \'default\'
        Literal UInt64_0
      Function greaterOrEquals (children 1)
       ExpressionList (children 2)
        Function filesystemUnreserved (children 1)
         ExpressionList (children 1)
          Literal \'default\'
        Literal UInt64_0