CreateQuery polygon_dictionary_nullable_default_source_table (children 3)
 Identifier polygon_dictionary_nullable_default_source_table
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      DataType Float64
      DataType Float64
   ColumnDeclaration value (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
 Storage definition (children 1)
  Function TinyLog
