Query: Nested sort in table?

Query: Nested sort in table?

[Christian Moe]

Hi,

Is there a technique or strategy to get nested sorts in Org tables, i. 
e. sorting first by column B, then by column A, ...?

e.g. a list of publications sorted by title:

| Author    | Year | Title            | Type    |
|-----------+------+------------------+---------|
| Smith, J. | 2006 | Mazes for mice   | Article |
| Jones, S. | 2003 | Mice for Dummies | Book    |
| Smith, J. | 2002 | Rodents          | Book    |
| Jones, S. | 2007 | Say 'Cheese'!    | Article |
| Jones, S. | 2000 | Pet care         | Book    |

For bibliographical order you would want to sort first by author, then 
by year (ascending or sometimes adecending). In other circumstances 
you might also want to sort by type first of all, to have separate 
lists of books and articles. You can sort by author

| Author    | Year | Title            | Type    |
|-----------+------+------------------+---------|
| Jones, S. | 2003 | Mice for Dummies | Book    |
| Jones, S. | 2007 | Say 'Cheese'!    | Article |
| Jones, S. | 2000 | Pet care         | Book    |
| Smith, J. | 2006 | Mazes for mice   | Article |
| Smith, J. | 2002 | Rodents          | Book    |

but how to get the works of each author sorted by date? Manually 
selecting a region from "2003" to the end of the "Jones" lines, 
sorting, and then selecting a region from "2006" to the end of the 
"Smith" lines, and sorting again, works:

| Author    | Year | Title            | Type    |
|-----------+------+------------------+---------|
| Jones, S. | 2000 | Pet care         | Book    |
| Jones, S. | 2003 | Mice for Dummies | Book    |
| Jones, S. | 2007 | Say 'Cheese'!    | Article |
| Smith, J. | 2002 | Rodents          | Book    |
| Smith, J. | 2006 | Mazes for mice   | Article |

-- but is there a shortcut?

Yours,
CM