Patent ID: 11868331
Assignee: nan
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. The system of claim 10, wherein the machine-readable instructions that, when executed by the processor, control the system to construct the row-index array include machine-readable instructions that, when executed by the processor, control the system to iteratively:
search the key search tree for the first-table key of each first-table row,
when the first-table key of said each first-table row is found in one of the plurality of nodes of the key search tree:
insert, into the one of the plurality of row-index elements of the row-index array located at the first-table row position of said each first-table row, the second-table row position stored in said one of the plurality of nodes, and

when the first-table key of said each first-table row is not found in the key search tree:
insert a null value into the one of the plurality of row-index elements of the row-index array located at the first-table row position of said each first-table row.