10 7.2.2. The WHERE Clause
11 7.2.3. The GROUP BY and HAVING Clauses
12 7.2.4. GROUPING SETS, CUBE, and ROLLUP
13 7.2.5. Window Function Processing
17 7.3.1. Select-List Items
21 7.4. Combining Queries (UNION, INTERSECT, EXCEPT)
22 7.5. Sorting Rows (ORDER BY)
25 7.8. WITH Queries (Common Table Expressions)
28 7.8.2. Recursive Queries
29 7.8.3. Common Table Expression Materialization
30 7.8.4. Data-Modifying Statements in WITH
32 The previous chapters explained how to create tables, how to fill them
33 with data, and how to manipulate that data. Now we finally discuss how
34 to retrieve the data from the database.