The SQL OLAP grouping extension used to provide hierarchical groupings without examining all possible combinations is ROLLUP.

Here's a step-by-step explanation:

1. SQL (Structured Query Language) is a programming language used to manage and manipulate databases.

2. OLAP (Online Analytical Processing) is a category of software tools that analyze data stored in a database in a multi-dimensional way.

3. SQL provides several OLAP functions, one of which is the grouping extension. This is used to create subtotals and grand totals in the result set of a query.

4. There are several types of grouping extensions, including GROUP BY, CUBE, ROLLUP, and GROUPING SETS.

5. The ROLLUP operator is used to create subtotals that roll up from the most detailed level to a grand total, following a hierarchy that you specify.

6. Unlike the CUBE operator, which generates all possible combinations for

Question

The SQL OLAP grouping extension used to provide hierarchical groupings without examining all possible combinations is ROLLUP.

Here's a step-by-step explanation:

1. SQL (Structured Query Language) is a programming language used to manage and manipulate databases.

2. OLAP (Online Analytical Processing) is a category of software tools that analyze data stored in a database in a multi-dimensional way.

3. SQL provides several OLAP functions, one of which is the grouping extension. This is used to create subtotals and grand totals in the result set of a query.

4. There are several types of grouping extensions, including GROUP BY, CUBE, ROLLUP, and GROUPING SETS.

5. The ROLLUP operator is used to create subtotals that roll up from the most detailed level to a grand total, following a hierarchy that you specify.

6. Unlike the CUBE operator, which generates all possible combinations for

Knowee AI · Accepted Answer

The SQL OLAP grouping extension used to provide hierarchical groupings without examining all possible combinations is ROLLUP.

Here's a step-by-step explanation:

1. SQL (Structured Query Language) is a programming language used to manage and manipulate databases.

2. OLAP (Online Analytical Processing) is a category of software tools that analyze data stored in a database in a multi-dimensional way.

3. SQL provides several OLAP functions, one of which is the grouping extension. This is used to create subtotals and grand totals in the result set of a query.

4. There are several types of grouping extensions, including GROUP BY, CUBE, ROLLUP, and GROUPING SETS.

5. The ROLLUP operator is used to create subtotals that roll up from the most detailed level to a grand total, following a hierarchy that you specify.

6. Unlike the CUBE operator, which generates all possible combinations for

Which SQL OLAP grouping extension is used to provide hierarchical groupings without examining all possible combinations?GROUNPINGCUBEGROUP_IDROLLUP

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Which SQL OLAP grouping extension is used to provide hierarchical groupings without examining all possible combinations?

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