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  • Agraj Mangal thinks this is interesting:

The column-oriented storage layout relies on each column file containing the rows in the same order. Thus, if you need to reassemble an entire row, you can take the 23rd entry from each of the individual column files and put them together to form the 23rd row of the table.


Cover of Designing Data-Intensive Applications


What is some rows dont have that column ? How does reconciliation happens then ?