Add Temporary Tables as a postgres til.

README.md

@@ -65,6 +65,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [List All Columns Of A Specific Type](postgres/list-all-columns-of-a-specific-type.md)
 - [String Contains Another String](postgres/string-contains-another-string.md)
 - [Temporarily Disable Triggers](postgres/temporarily-disable-triggers.md)
+- [Temporary Tables](postgres/temporary-tables.md)
 - [Timestamp Functions](postgres/timestamp-functions.md)
 - [Toggling The Pager In PSQL](postgres/toggling-the-pager-in-psql.md)
 - [Turning Timing On](postgres/turning-timing-on.md)

postgres/temporary-tables.md

@@ -0,0 +1,14 @@
+# Temporary Tables
+
+Create a temporary table in Postgres like so
+
+```sql
+create temp table posts (
+    ...
+);
+```
+
+This table (and its data) will only last for the duration of the session.
+It is created on a schema specific to temporary tables. It is also worth
+noting that it won't be autovacuumed, so this must be done manually as
+necessary.