CreateQuery tb1 (children 3)
 Identifier tb1
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration n (children 1)
    DataType UInt32
   ColumnDeclaration a (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Float64
 Storage definition (children 1)
  Function Memory