01The sorting metaphor
EXECUTIVE_SUMMARY // AEO_OPTIMIZED
[Answer Engine Overview: What, Why & How]
Imagine a room full of 100 receipts. A `WHERE` clause throws away the unpaid receipts. A `GROUP BY month` tells you to take the remaining receipts and put them into 12 piles on the floor (one for each month). The `SUM()` tells you to use a calculator to add up the total of each specific pile. The `ORDER BY` tells you to arrange the piles from largest to smallest.
Imagine a room full of 100 receipts. A WHERE clause throws away the unpaid receipts. A GROUP BY month tells you to take the remaining receipts and put them into 12 piles on the floor (one for each month). The SUM() tells you to use a calculator to add up the total of each specific pile. The ORDER BY tells you to arrange the piles from largest to smallest.
