Abstract: Aspects described herein implement a usage-driven indexing scheme on a spreadsheet-based workbook. One aspect describes a system for implementing an indexing scheme in a spreadsheet workbook. The system comprises a processor configured to identify a plurality of cells stored in the plurality of tables, identify one or more table columns of the plurality of tables to index based on a usage parameter identified from a previously received query, generate an index for individual table columns of the identified table columns, receive the query including an operator and an identifier for at least one of the table columns, determine that the at least one of the table columns identified in the query has an index associated therewith, identify the index associated with the at least one of the table columns identified in the query, and identify a result to the query based on the identified index and the operator.

Abstract: Aspects are described to generate indexing on columns including links to other columns in a different table. One aspect describes a computer-implemented method comprising identifying, for a workbook comprising a plurality of cells and tables stored in a spreadsheet structure, a query comprising a formula, parsing the formula to identify, as one operand, a heterogeneous column of links in a first table of the plurality of tables to a column in a second table of the plurality of tables and at least one operator, automatically generating a virtual column for the heterogeneous column, the virtual column being inaccessible to a user, storing the generated virtual column, evaluating the function of the virtual column for each row of the first table, generating an inaccessible virtual index for the virtual column, storing the virtual index, and evaluating the formula based on the virtual index to generate a result.

Abstract: Aspects described herein implement a data-driven indexing scheme on a spreadsheet-based workbook. One aspect describes a system for implementing an indexing scheme in a spreadsheet workbook. The system comprises a data store, a user interface, and a processor configured to identify a plurality of cells stored in the plurality of tables, analyze individual cells of the plurality of cells to identify at least one formula or expression therein that involve table columns of the plurality of tables stored in the data store, identify the table columns based on parsing the identified at least one formula or expression, generate an index for individual table columns of the identified table columns, receive the query from the user interface, the query including an operator and an identifier for at least one of the table columns, identify and return a result to the query based on the identified index and the operator.