Add note about psql \x

docs/notes/database/psql-expanded-display.md

@@ -0,0 +1,54 @@
+---
+title: View wide tables with psql
+tags:
+  - PostgreSQL
+sources:
+  - https://stackoverflow.com/a/26040852
+---
+
+When making a query with lots of columns, it can become so wide that it wraps, making the results incredibly difficult to read.
+
+To combat this, you can toggle "Expanded display" using `\x`:
+
+```psql
+website=# \x
+Expanded display is on.
+website=# \x
+Expanded display is off.
+```
+
+Expanded display changes the output from a conventional table to a key/value mapping:
+
+```psql
+website=# select * from wagtailcore_page order by title limit 1;
+-[ RECORD 1 ]--------------+---------------------------------------
+id                         | 207
+path                       | 0001000100020034
+depth                      | 4
+numchild                   | 0
+title                      | Adding blog posts to my GitHub profile
+slug                       | github-readme-blog-posts
+live                       | t
+has_unpublished_changes    | f
+url_path                   | /home/posts/github-readme-blog-posts/
+seo_title                  |
+show_in_menus              | t
+search_description         |
+go_live_at                 |
+expire_at                  |
+expired                    | f
+content_type_id            | 14
+owner_id                   | 1
+locked                     | f
+latest_revision_created_at | 2024-02-18 21:39:50.893249+00
+first_published_at         | 2024-02-06 20:55:01.699808+00
+live_revision_id           | 574
+last_published_at          | 2024-02-18 21:39:50.999476+00
+draft_title                | Adding blog posts to my GitHub profile
+locked_at                  |
+locked_by_id               |
+translation_key            | 3714dd50-fabe-4d56-b4bd-fdabc27568a4
+locale_id                  | 1
+alias_of_id                |
+latest_revision_id         | 574
+```