Flip the code snippets around.

postgres/two-ways-to-compute-factorial.md

@@ -4,15 +4,6 @@ In PostgreSQL, there are two ways to compute the factorial of a number.
 There is a prefix operator and a postfix operator. The prefix operator is
 `!!` and can be used like so:
 
-```sql
-> select 5!;
- ?column?
-----------
-      120
-```
-
-The postfix operator is `!` and can be used like so:
-
 ```sql
 > select !!5;
  ?column?
@@ -20,6 +11,15 @@ The postfix operator is `!` and can be used like so:
       120
 ```
 
+The postfix operator is `!` and can be used like so:
+
+```sql
+> select 5!;
+ ?column?
+----------
+      120
+```
+
 See the [arithmetic function
 docs](http://stackoverflow.com/questions/7866353/git-list-all-available-commands)
 for more details.