CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration col (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Float64
    Function STATISTICS (children 1)
     ExpressionList (children 1)
      Function tdigest
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList
