 To thisend, it combines the notion of a multidimensional data cube with an expressive, spreadsheet-like query construction interface , in order to ease the generation of otherwise complex queries. The Worksheet interface borrows successful features from electronic spreadsheets to support the large segment of users familiar with that environment. We demonstrate the usefulness of Sigma Worksheet through two in-depth use casesand report on user feedback that we elicit through a 100-person survey followed by a semi-structured interview study with 70 participants.
<meaning-changed>  To thisend, it combines the notion of a multidimensional data cube with an expressive, spreadsheet-like query construction interface , in order to ease the generation of otherwise complex queries. The Worksheet interface borrows successful features from electronic spreadsheets to support the large segment of users familiar with that environment. We demonstrate the usefulness of Sigma Worksheet through two in-depth use casesand report on user feedback that we elicit through a 100-person survey followed by a semi-structured interview study with 70 participants.
 To thisend, it combines the notion of a multidimensional data cube with an expressive, spreadsheet-like interface for data analysis through direct manipulation. Sigma Worksheet dynamically constructs matching SQL queries from user interactions on this familiar interface, building on the versatility and expressivity of SQL. Sigma Worksheet executes constructed queries directly on CDWs, leveraging the superior characteristics of the new generation CDWs, including scalability. To evaluate Sigma Worksheet, we first demonstrate its expressivity through two real life use cases, cohort analysis and sessionization. We then measure the performance of the Worksheet generated queries with a set of experiments using the TPC-H benchmark. Results show the performance of our compiled SQL queries is comparable to that of the reference queries of the benchmark. Finally, to assess the usefulness of Sigma Worksheet in deployment, we elicit feedback through two in-depth use casesand report on user feedback that we elicit through a 100-person survey followed by a semi-structured interview study with 70 participants.