Add A Better Mull Display Character as postgres til.

README.md

@@ -106,6 +106,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 
 ### postgres
 
+- [A Better Null Display Character](postgres/a-better-null-display-character.md)
 - [Auto Expanded Display](postgres/auto-expanded-display.md)
 - [Checking The Type Of A Value](postgres/checking-the-type-of-a-value.md)
 - [Configure The Timezone](postgres/configure-the-timezone.md)

postgres/a-better-null-display-character.md

@@ -0,0 +1,12 @@
+# A Better Null Display Character
+
+By default, `psql` will display null values with whitespace. This makes it
+difficult to quickly identify null values when they appear amongst a bunch
+of other data. You can pick a better display value for null characters with
+`\pset null`. My preference is the following:
+
+```
+\pset null 'Ø'
+```
+
+I have this in my `.psqlrc` file so that it is used by default every time.