CreateQuery range_dictionary_nullable_source_table (children 3)
 Identifier range_dictionary_nullable_source_table
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration start_date (children 1)
    DataType Date
   ColumnDeclaration end_date (children 1)
    DataType Date
   ColumnDeclaration value (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
 Storage definition (children 1)
  Function TinyLog
